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Publications

Instrumental Testing of Quality of Water

Book Chapter

Book NameHandbook of Water Pollution

PublisherWiley Publisher

Author NameAmita Chaudhary

Page Number417-439

Chapter TitleInstrumental Testing of Quality of Water

Published YearMarch 2024

ISSN/ISBN No978-1-119-90480-9

Indexed INScopus

Abstract

Water is a precious source. The need for analysing systems that may serve as stand-alone measuring systems is increasing for water analysis. Various advanced analytical techniques with various sensing methodologies have been described and discussed in detail in the chapter. There are presently few commercially accessible total water analysis devices that also meet the requirements for on-site assessments of different contaminants. Various spectroscopy techniques, including various fundamental methodologies, are also discussed. The testing domain includes physical, chemical and biological components responsible for environmental and human health toxicity. Some of the described promising approaches are presented in the works, and many of them already have the potential to lead to reliable and sensitive measuring systems.

Improvement Of Syngas Quality In Fixed Bed Gasifier Using Camg(CO3)2 Catalyst

Journal

Journal NameFluid Flow, Heat and Mass Transfer

Title of PaperImprovement Of Syngas Quality In Fixed Bed Gasifier Using Camg(CO3)2 Catalyst

PublisherElsevier

Volume Number-

Page Number111

Published YearJune 2023

Indexed INScopus

Abstract

This paper deals with the experimental investigation of lignite (L) and wood (W) feedstock in a pilot-scale downdraft gasifier. The study aims to check the compatibility of CaMg(CO3)2 [dolomite (D)] catalyst, 5% (W/W), with lignite and wood (L+D, W+D) feedstock as an additive to enhance the performance of a 10 kWe atmospheric pressure downdraft gasifier system. Fuel consumption and gas flow rate were found to be 10.01-11.6 kg h-1 and 26.76-29.57 kg h-1, respectively, for lignite and wood feedstock (with and without catalyst). In lignite, CO and H2 concentrations were increased by 6.81 % and 4.9 %, respectively, whereas in wood, their concentrations were increased by 8.88 % and 5.1 % when the catalyst was employed with feedstock. The producer gas LHV and cold gas efficiency were increased by 6.02% and 5.75% in lignite and 6.97% and 6.61 in wood, whereas specific fuel consumption decreased by 5.92% (in L), 5.17 (in W) with dolomite feedstock. Tar and Total Particulate Matter (PM) concentrations in the producer gas were measured and found to have a noticeable decline with catalytic gasification for both feedstocks. The study concludes that adding dolomite offered better results in terms of higher efficiency and lower tar–PM concentrations.

Sensing Materials: Bimetallics and Metal Mixtures (Core-Shell Microspheres)

Book Chapter

Book NameEncyclopedia of Sensors and Biosensors

PublisherElsevier

Chapter TitleSensing Materials: Bimetallics and Metal Mixtures (Core-Shell Microspheres)

Published YearJanuary 2023

ISSN/ISBN No978-0-12-822549-3

Indexed INScopus

Abstract

In the past few years, the researchers have paying attention on the core-shell microspheres due to excellent applications. In essence, core-shell microspheres have unique composition which makes them distinguishable from other particle types. These microparticles exhibit the combined properties of both core and shell materials. In addition, they exhibited excellent performance, and has been recorded for a wide range of small and large molecules, neutral and ionic, analytes, metabolites, and biomolecules. The present chapter is cover the classification, synthesis and industrial applications of core-shell microparticles. Importantly, unique properties of the core-shell microparticles make them extremely suitable for industrial applications as discussed in Industrial Applications section. To conclude, current challenges and industrial scenario on different classes of core-shell microparticles also discussed for researchers in this bright area.

Slow pyrolysis of low-density Poly-Ethylene (LDPE): A batch experiment and thermodynamic analysis

Journal

Journal NameEnergy

Title of PaperSlow pyrolysis of low-density Poly-Ethylene (LDPE): A batch experiment and thermodynamic analysis

PublisherElsevier

Volume Number263

Page Number125810

Published YearSeptember 2022

ISSN/ISBN No1873-6785

Indexed INScopus, Web of Science

Abstract

This research investigates the catalytic effect of activated charcoal, MgCO3, and ZSM-5 in a batch-pyrolysis reactor with a Low-Density Poly-Ethylene (LDPE) feedstock on pyro-oil yield. Initially, trials with the ZSM-5 catalyst were conducted at various temperatures ranging from 300 to 600 °C, in which 500 °C temperature offered a higher pyro-oil yield. Further, similar experiments were carried out with activated charcoal and MgCO3 at 500 °C. The qualitative and quantitative analysis of pyro-oil was done using GC/MS, DSC, TGA, and FTIR techniques. In GC/MS and FTIR, the range of hydrocarbon lying in C5 – C35 for aliphatic, aromatic, and phenolic groups. Moreover, the thermal stability of pyro-oil is found to be 350 °C and decreased by 10%–450 °C from TGA studies. The elemental analysis of char (C90.08% H9.82% N0.10%) and gas composition of pyro-gas were also studied. Additionally, thermal calculations were done for mass balance, energy balance, and exergy balance at various temperatures and found to be in good agreement with the input and output parameters. As per findings, the pyrolysis studies at 500 °C with LDPE feedstock and ZSM-5 catalyst showed higher pyro-oil yields than other tested catalysts under similar conditions.

An alternative fuel production from sawdust through batch-type pyrolysis reactor: Fuel properties and thermodynamic analysis

Journal

Journal NameProcess Safety and Environmental Protection

Title of PaperAn alternative fuel production from sawdust through batch-type pyrolysis reactor: Fuel properties and thermodynamic analysis

PublisherElsevier

Volume Number167

Page Number332–342

Published YearMarch 2022

ISSN/ISBN No1744-3598

Indexed INScopus

Abstract

This paper deals with the experimental investigations and thermodynamic studies carried out for five distinct temperatures ranging from 300 to 500 ℃ with a heating rate of 10 ℃/min. This work aims to study the influence of pyrolysis temperature on product (biochar, bio-oil, syngas) yield, its physicochemical properties and energy yield. The experiments were conducted in a batch-type vacuum pyrolysis reactor with sawdust as a feedstock. Findings show that biochar yield declined with temperature rise, whereas bio-oil and syngas yield increased. A higher yield of bio-oil (40.67%) was obtained at 450 ℃; after that it was declined. However, a higher biochar yield (60.67%) was attained at 300 ℃. Syngas generated at 500 ℃ had a higher product yield (24%) and energy output (147.05 kJ). Although, total energy output was found to be higher at 500 ℃ (634.71 kJ). This research also included thermodynamic studies such as mass, energy, exergy analysis, and sustainability analysis and found good agreement between input and output parameters. The study’s main conclusion is that higher pyrolysis temperatures (450–500 ℃) offer better results in terms of higher product and energy yield for sawdust feedstock.

Dye-sensitized solar cells with polyaniline: A review

Journal

Journal NameInorganic Chemistry Communications

Title of PaperDye-sensitized solar cells with polyaniline: A review

PublisherElsevier

Volume Number135

Page Number109087

Published YearJanuary 2022

ISSN/ISBN No1387-7003

Indexed INScopus, Web of Science

Abstract

Dye-Sensitized Solar Cells (DSSCs) or Grätzel cells have attracted widespread attention due to their low cost, ease of fabrication, and reasonably good photochemical conversion efficiency. The photochemical efficiency of solar cells mainly depends on their design, development, electrodes, and electrolyte used. The use of conducting polymers in solar cells helps in reducing the cost of DSSCs with the same efficiency. Polyaniline acts as a promising conductive polymer mainly used as a counter electrode catalyst on FTO glass as well as on flexible substrates. It allows large-scale mass production and significant cost savings in the manufacturing of solar cells. This paper reviews the feasibility of Polyaniline and its composites as a counter-electrode catalyst for DSSCs. Its application as hole conductors, a catalyst for photosensitized electrolytes. The mechanism of its photocatalytic activities is well explained. The Polyaniline and Polyaniline based solar cells shows the efficiency from 7.1 to 12% with different dyes and electrolyte solutions. The recent advances made with this polymer, a suitable replacement for platinum, is also intensely reviewed.

Effect of Physical Properties of Synthesized Protic Ionic Liquid On Carbon Dioxide Absorption Rate

Journal

Journal NameEnviron Sci Pollut Res Int.

Title of PaperEffect of Physical Properties of Synthesized Protic Ionic Liquid On Carbon Dioxide Absorption Rate

Published YearJanuary 2022

ISSN/ISBN No1614-7499

Indexed INScopus

Abstract

The concentration of carbon dioxide gas has accelerated over the last two decades which cause drastic changes in the climatic conditions. In industries, carbon capture plants use a volatile organic solvent which causes many environmental threats. So, a low-cost green absorbent has been formulated with nontoxicity and high selectivity properties for absorbing carbon dioxide gas. This paper contains the synthesis process along with the structure confirmation using 1H NMR, 13C NMR, FT-IR, and mass spectroscopy. Density, viscosity, and diffusivity are measured at different ranges with standard instruments. The kinetic studies were also conducted in a standard predefined-interface stirred cell reactor. The kinetic parameters were calculated at different parameters like agitation speeds, absorption temperature, initial concentrations of ionic liquid, and partial pressure of carbon dioxide. The reaction regime of carbon dioxide absorption is found to be in fast reaction kinetics with pseudo-first-order. The reaction rate and the activation energy of CO2 absorption are experimentally determined in the range of 299 to 333 K with different initial concentrations of ionic liquid (0.1–1.1 kmol/m3). The second-order rate constant and activation energy of carbon dioxide absorption in the synthesized ionic liquid is found to be 9.48 × 103 m3 mol−1 s−1 and 16.61 kJ mol−1 respectively. On increasing the viscosity of the reacting solvent, the diffusivity of CO2 gas molecules decreases, and thus the rate of absorption decreases. This solvent has shown great potential to absorb CO2 at a large scale.

Green Pathway of CO2 Capture

Book Chapter

Book NameAdvances in Science, Technology and Innovation

PublisherSpringer

Author NameDr Amita Chaudhary

Page Number2-s2.0-85120860683

Chapter TitleGreen Pathway of CO2 Capture

Published YearJanuary 2022

ISSN/ISBN No978-3-030-72877-9

Indexed INScopus

Abstract

Global warming reaches an average of up to 425 ppm in May 2020 with an increasing rate of CO2 emissions. The outcome is the melting of icebergs and seriously affected biodiversity. Therefore, demand was raised for the creation of new mitigation approaches to effectively catch it. Developing cost-effective, environmentally sustainable, and productive CO2 capture technologies are required. In this chapter, we illustrated alternate green CO2 sequestration routes such as adsorption via, MOFs, green solvent absorption, and biological CO2 conversion method. Unlike biotic sequestration, abiotic sequestration is a method of engineering. It is possible to develop advanced technologies for deep injection into the ocean, geological structures, coal mines, and oil wells, etc. The detailed process and results are discussed in the given chapter.

Physical methods for wastewater treatment

Book Chapter

Book NameAdvanced Materials and Technologies for Wastewater Treatment

PublisherTaylor and Francis CRC Press

Chapter TitlePhysical methods for wastewater treatment

Published YearSeptember 2021

Indexed INScopus

Kinetic-invariant analysis of dye degradation in an annular slurry bubble-column photo reactor

Journal

Journal NameInternational Journal of Chemical Reactor Engineering

Title of PaperKinetic-invariant analysis of dye degradation in an annular slurry bubble-column photo reactor

PublisherDe Gruyter

Published YearJune 2021

Indexed INScopus

Supercritical Fluids as Green Solvents

Book Chapter

Book NameHandbook of Greener Synthesis of Nanomaterials and Compounds Volume 1: Fundamental Principles and Methods

PublisherElsevier

Chapter TitleSupercritical Fluids as Green Solvents

Published YearFebruary 2021

ISSN/ISBN No978-0-12-821938-6

Indexed INScopus

Abstract

In every chemical process industry, solvent plays a very important role mainly, in separation, by extraction, and also as a reaction intermediator, and promoter. The conventional organic solvents still in use in many industries are volatile organic compounds (VOCs) which are responsible for environmental pollution and health hazards to public. Replacing, reducing and restricting their use is one of most important initiative to be taken. Extensive research on alternate solvents and processes which are environmentally benign is the need of the day. Some of these are ionic liquids, natural extracts like plant sap, ester based, renewable feedstock-based solvents etc., and supercritical fluids (SCFs) which do not release toxic vapours into the atmosphere. Supercritical fluids which have low tunable densities varied between those of gas and liquid phases in critical conditions have been extensively studied for the past two decades to study their fundamental properties as solvents. By changing the density of the fluid, their solvation power can be tailored. These SCFs are comparatively chemically inert, eco-friendly, low-cost and have critical point under ambient conditions. Supercritical water (scH2O) has been used as an industry-attractive approach for catalytic reactions in aqueous biphasic systems. Similarly, in the sense of green chemistry and catalytic applications in various mono and biphasic systems, supercritical carbon dioxide (scCO2) is an important reaction medium. This chapter will mainly focus on green supercritical fluids solvents, solvents extracted from plants, ester solvents and briefly on room temperature ionic liquids. The content includes phase diagrams of these solvents, description of physicochemical properties and their dependence on temperature and pressure conditions, and finally their applications in different processes.

Qualitative and Quantitative Analysis of Water

Book Chapter

Book NameApplied Water Science Volume 1: Fundamentals and Applications

PublisherWiley

Chapter TitleQualitative and Quantitative Analysis of Water

Published YearFebruary 2021

ISSN/ISBN No9781119725237

Indexed INScopus

Abstract

The inaccessibility and poor water quality continue to pose a major threat to human health worldwide. Around billions of people lack access drinkable water. The water contains the pathogenic impurities, which are responsible for water-borne diseases. The main purpose to write this chapter is to spread knowledge of the quality of the available water. In this chapter, different wastewater parameters and their estimation methods are discussed in detail. Also, qualitative and quantitative measurements are discussed to constantly monitor the quality of water from the various sources of supply.

Effect of catalyst to lignite ratio on the performance of a pilot scale fixed bed gasifier

Journal

Journal NameEnergy

Title of PaperEffect of catalyst to lignite ratio on the performance of a pilot scale fixed bed gasifier

PublisherElsvier

Published YearDecember 2019

Indexed INScopus

Experimental studies on renewable hydrogen production by steam reforming of glycerol over zirconia promoted on Ni/Al2O3 catalyst

Journal

Journal NameInternational Journal of Chemical Reactor Engineering

Title of PaperExperimental studies on renewable hydrogen production by steam reforming of glycerol over zirconia promoted on Ni/Al2O3 catalyst

PublisherDe Gruyter

Volume Number22

Page Number87-95

Published YearDecember 2023

ISSN/ISBN No1542-6580

Indexed INScopus, Web of Science

Improving morphology of P3HT: PCBM bulk heterojunction solar cells with anisotropic shaped silica nanoparticles

Journal

Journal NameMaterial Today Proceedings

Title of PaperImproving morphology of P3HT: PCBM bulk heterojunction solar cells with anisotropic shaped silica nanoparticles

PublisherElsevier

Volume Number76

Page Number263-270

Published YearJanuary 2023

Indexed INScopus

Recent Advancements in Electrochemical Conversion of Carbon Dioxide

Journal

Journal NameJournal of Nano and Electronic Physics

Title of PaperRecent Advancements in Electrochemical Conversion of Carbon Dioxide

PublisherSumy State University, USA

Volume Number14

Page Number06027-1 - 06027-5

Published YearDecember 2022

ISSN/ISBN No2077-6772

Indexed INScopus

Abstract

Electrochemical reduction of carbon dioxide into eco-friendly and clean products is a promising approach to eradicate pollution. Although carbon dioxide emission is inhibited by the advent of renewable sources of energy, it is present in the atmosphere and needs to be cleaned. The reduction of carbon dioxide from atmospheric gases can be accomplished by its adsorption and subsequent transportation to electrolytic chambers, where it is reduced to hydrocarbons, organic acids or carbonates. This review focuses on developing a threecompartment electrochemical cell to reduce carbon dioxide used as a catholyte. Various factors affecting the electrochemical reduction of carbon dioxide and recent advancements in this field are deliberated.

Trifluorosulfonyl Imide-Based Ionic Liquid Electrolytes for Lithium-Ion Battery: A Review

Journal

Journal NameJournal of The Institution of Engineers (India): Series D

Title of PaperTrifluorosulfonyl Imide-Based Ionic Liquid Electrolytes for Lithium-Ion Battery: A Review

PublisherSpringer

Page Number1-10

Published YearDecember 2022

Indexed INScopus

A brief overview on advances in water treatment process

Book Chapter

Book Name3D PRINTING TECHNOLOGY FOR WATER TREATMENT APPLICATIONS

PublisherElsevier

Author NameAmit Kumar, Leena V. Bora, Nikita P. Chokshi, Gajendra Kenil and Mansuri Zaid

Chapter TitleA brief overview on advances in water treatment process

Published YearDecember 2022

Indexed INScopus

Pyrolysis of Waste Biomass Using Solar Energy for Clean Energy Production

Book Chapter

Book NameSustainable and Clean Energy Production Technologies

PublisherSpringer Nature Singapore

Author NameLeena Kapoor, Jay Mant Jha, Dan Bahadur Pal, Dinesh Kumar Pandey, Amit Kumar

Page Number133-150

Chapter TitlePyrolysis of Waste Biomass Using Solar Energy for Clean Energy Production

Published YearJuly 2022

Indexed INScopus

A critical review on thermodynamic and hydrodynamic modeling and simulation of liquid antisolvent crystallization of pharmaceutical compounds

Journal

Journal NameJournal of Molecular Liquid

Title of PaperA critical review on thermodynamic and hydrodynamic modeling and simulation of liquid antisolvent crystallization of pharmaceutical compounds

PublisherElsevier

Volume Number362

Page Number119663

Published YearJune 2022

ISSN/ISBN No0167-7322

Indexed INScopus, Web of Science, ABDC, Indian citation Index, Hein Database, EBSCO, Others

Abstract

Fine particles are in great demand in the pharmaceutical industry due to their versatile applications. Liquid antisolvent crystallization (LASC) is one of the promising approaches to prepare fine particles without requiring high energy. The interdependence of system thermodynamics, mass transfer kinetics, and the multi-phase hydrodynamics in the liquid antisolvent crystallization process is not well understood. In this review, the different modeling aspects of LASC are described from a fundamental perspective. The system thermodynamics of LASC is discussed and several models used in literature to predict the solubility in pure solvents and binary solvent mixtures are summarized. A detailed description of supersaturation, metastable zone width and induction time in antisolvent crystallization are presented and critically analyzed. The nucleation and growth kinetics are discussed and interpreted in terms of process variables. The hydrodynamic aspect of LASC which involves the mixing at different length scales is discussed and analyzed in detail. The CFD simulation-based approach to describe the interaction among different phenomena is critically reviewed. The crystallization scale-up, which is a major challenge in the LASC process, is discussed. A guideline for crystallization scale-up using the CFD-based modeling approach is presented which will be helpful to prospective researchers.

A kinetic model and parameters estimate for the synthesis of 2-phenyloctane: a starting material of bio-degradable surfactant

Journal

Journal NameInstitute of Chemical Engineers

Title of PaperA kinetic model and parameters estimate for the synthesis of 2-phenyloctane: a starting material of bio-degradable surfactant

PublisherTaylor & Francis

Page Number1-13

Published YearMay 2022

ISSN/ISBN No0019-4506

Indexed INScopus, ABDC, Indian citation Index, Hein Database, Others

Abstract

In this article, we have proposed a kinetic model of a 2-phenyloctane formation from benzene and 1-octene in the presence of Y zeolite CVB760 solid acid catalyst. The typical elementary reaction involved in benzene alkylation consists of isomerisation of π-bond of 1-octene and attachment of octyl ion with benzene. Here, we have followed transition state theory and statistical thermodynamics to express the rate expression for the disappearance of 1-octene and formation of 1-octene and 2-phenyloctane isomers. In transition state theory, we have incorporated a single-event concept to account for a change in the relative position of the atom during the chemical reaction. Subsequently, we also estimate activation energies involved in the kinetic model using the regression method and experimental data. For this, a particle swarm optimisation (PSO) followed by Levenberg–Marquardt algorithm, called hybrid PSO, is adopted to measure the activation energies. The statistical methods involved in this investigation include analysis of variance, F-test and parity diagram and comparison between the proposed kinetic model and experimental data confirm the kinetic model reliability and optimal estimate of activation energies.

Experiments on Liquid Film Thickness around Taylor Finger

Journal

Journal NameInternational Journal of Chemical Reactor Engineering

Title of PaperExperiments on Liquid Film Thickness around Taylor Finger

PublisherDe Gruyter

Published YearFebruary 2022

ISSN/ISBN No1542-6580

Indexed INScopus, Web of Science, Indian citation Index, Hein Database, EBSCO

Abstract

Taylor finger is characterized by a single elongated air bubble that grows upward during the drainage of liquid from closed top vertical tubes. The characteristic of the Taylor finger is similar to the Taylor bubble commonly observed in gas–liquid two-phase flow. During the upward growth of the Taylor finger, liquid from the tube drains as a thin film around it. The exact prediction of film thickness is important in several engineering designs and process calculations such as the design of contacting devices, two-phase flow through porous media, boiling in tubes, and monolith reactors. The present study proposes an experimental technique to estimate the thickness of the draining liquid film. Based on experiments an empirical model has been proposed for non-dimensional film thickness in the inviscid region. The proposed model agrees well with the experimental data and equation proposed in published literatures (Davies, R. M., and G. Taylor. 1950. “The Mechanics of Large Bubbles Rising Through Extended Liquids and Through Liquids in Tubes.” Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 200, 375–90; Dukler, A. E., and J. Fabre. 1994. “Gas-Liquid Slug Flow.” Multiphase Science and Technology 8: 1–4; Fabre, J., and A. Liné. 1992. “Modeling of Two-Phase Slug Flow.” Annual Review of Fluid Mechanics 24: 21–46).

Experimental investigation on in-situ void fraction of air-water co-current flow-through milli-channels

Journal

Journal NameMaterial Today Proceedings

Title of PaperExperimental investigation on in-situ void fraction of air-water co-current flow-through milli-channels

PublisherElsevier

Volume Number57

Page Number1671-1678

Published YearJanuary 2022

Indexed INScopus

Simulation of ethylene polymerization in continuous slurry reactors

Journal

Journal NameMaterial Today Proceeding

Title of PaperSimulation of ethylene polymerization in continuous slurry reactors

PublisherElsevier

Volume Number55

Page Number1462-1467

Published YearJanuary 2022

Indexed INScopus

Comparison of NSGA-III with NSGA-II for multi objective optimization of adiabatic styrene reactor

Journal

Journal NameMaterial Today Proceedings

Title of Paper Comparison of NSGA-III with NSGA-II for multi objective optimization of adiabatic styrene reactor

PublisherElsevier

Volume Number57

Page Number1509-1514

Published YearJanuary 2022

ISSN/ISBN No2214-7853

Indexed INScopus

Stratified flow distribution during gas–liquid downflow in the mesodomain

Journal

Journal NamePhysics of Fluid

Title of PaperStratified flow distribution during gas–liquid downflow in the mesodomain

PublisherAmerican Institute of Physics

Volume Number33

Page Number113317

Published YearNovember 2021

ISSN/ISBN No1070-6631

Indexed INScopus, Web of Science, ABDC, Indian citation Index, Hein Database, EBSCO, Others

Abstract

The paper discusses the formation and characteristics of stratified air–water downflow in the mesodomain. The stratified pattern, observed at low phase velocities, is characterized by air and water flowing side by side and both wetting the conduit wall, similar to stratified distributions in horizontal conduits. Such flow segregation without the influence of gravity is counterintuitive and no detailed investigation on the formation and flow physics of this distribution is reported till date. We have performed extensive experiments in glass conduits of 2.5–12.5 mm diameter where the two phases are introduced through T and Y junctions with different included angles between the entry arms. Our experiments reveal that stratified flows are formed up to a critical angle ?? subtended by the edges of the circumferential liquid film and beyond the critical wetting angle, the flow pattern is annular with liquid completely wetting the conduit wall. We further note ?? to depend on liquid properties, included angle of Y-entry, conduit diameter, and phase flow rates. Based on experimental observations, we propose a simplistic analysis to relate the liquid properties, conduit dimension, and Y-entry included angle and the liquid and gas flow rates to describe the formation of stratified and annular flow at the junction. The analysis also estimates the in situ void fraction during stratified gas–liquid downflow.

Gas-liquid downward flow through narrow vertical conduits: effect of angle of entry and tube-diameter on flow patterns

Journal

Journal NameInternational Journal of Chemical Reactor Engineering

Title of PaperGas-liquid downward flow through narrow vertical conduits: effect of angle of entry and tube-diameter on flow patterns

PublisherDe Gruyter

Volume Number19

Page Number655-662

Published YearFebruary 2021

ISSN/ISBN No1542-6580

Indexed INScopus, Web of Science, ABDC, Indian citation Index, Hein Database, EBSCO, Others

Abstract

The present study investigates the flow pattern characteristics of air-water co-current down-flow in millichannels. The experiments have been performed in glass tube of diameter 0.0042 and 0.008 m. The fluids are injected through Y entry the included angle between the Y arms being 45°, 90°, 135°, and 180° (T Entry). The investigation reveals that the flow patterns are function of tube-diameter, and angle of fluid entry. Interestingly, stratified flow has been observed for steeper Y entry section at low liquid flow rates.

Review on polycyclic aromatic hydrocarbons (PAHs) migration from wastewater.

Journal

Journal NameJournal of Contaminant Hydrology

Title of PaperReview on polycyclic aromatic hydrocarbons (PAHs) migration from wastewater.

PublisherElsevier

Page Number103715

Published YearJanuary 2021

ISSN/ISBN No0169-7722

Indexed INScopus, Web of Science, ABDC, Indian citation Index, Hein Database, EBSCO, Others

Abstract

Rapidly increasing global population and increased civilization has increased burden on potable water resources and results in larger volumes of wastewater. Physical wastewater management techniques has advanced for domestic usage and commercial effluent new conceptions about imminent wastewater treatment have been acclaimed for highly carcinogenic polycyclic aromatic hydrocarbon (PAH) compounds. The present review study emphasis on the assessment of several accessible PAHs treatment methods used in wastewater management. The elementary principles, contextual remediation mechanisms and recent development in PAHs removal practices have also been precisely explained. The comprehensive information regarding sources, dispersal, classification, physicochemical properties, PAHs toxicity for humans and aquatics life, conventional treatment procedures, and advanced oxidation processes specified can assist us to identify the PAHs problem and their intensity. The performance evaluation of different removal techniques are discussed in details and found that highest PAHs’ reduction for 5-or 6-ring (99%,) while 3-ring (79% reduction) with oxidant dose of 1.64 mL/L using titanium catalyst. In case of MWTPs, with secondary techniques, the average removal efficiency found in the range of 81.1-92.9% while for AOPs are 32-99.3%. Here, overall yield through AOPs most suitable if process used with some catalyst enhanced the yield as well and suitable for high ring as well as low ring PAHs. Among various processes, advanced oxidation and catalytic oxidation processes are the most valuable and promising techniques for PAHs removal. Based on the given evidences, the AOPs coupled with catalysts have been decided as the most competent design for wastewater PAHs treatment.

Draining phenomenon in closed narrow tubes pierced at the top: an experimental and theoretical analysis

Journal

Journal NameScientific Reports

Title of PaperDraining phenomenon in closed narrow tubes pierced at the top: an experimental and theoretical analysis

PublisherNature

Volume Number(8) 14114

Published YearSeptember 2018

ISSN/ISBN No2045-2322

Indexed INScopus, PubMed, Web of Science, ABDC, Indian citation Index, EBSCO, UGC List, Others

Abstract

The phenomenon of draining, although ubiquitous in nature, has received scant attention especially in the meso-scale. We observe that closed top tubes drain by the inception of an axisymmetric ‘Taylor fnger’ while a minute pierce of the top closure results in an altogether diferent physics with air entry from the top pushing the liquid out. Again, a coupled mechanism comprising full bore followed by flm draining is observed for “too small” a top pierce at “high enough” Eotvos number. Top pierce initiates draining in dimensions which would not drain otherwise and fnger entry hastens the process of draining. The myriad of phenomena thus exhibited is depicted as phase diagrams in vertical and inclined conduits. A mechanistic model has been proposed to predict draining and the onset of fnger entry in vertical tubes

Void Fraction and Pressure Drop in Gas-Liquid Downflow through Narrow Vertical Conduits- Experiments and Analysis

Journal

Journal NameChemical Engineering Science

Title of PaperVoid Fraction and Pressure Drop in Gas-Liquid Downflow through Narrow Vertical Conduits- Experiments and Analysis

PublisherChemical Engineering Science

Volume Number171

Page Number117-130

Published YearNovember 2017

ISSN/ISBN No0009-2509

Indexed INScopus, Web of Science, ABDC, Indian citation Index, Hein Database, EBSCO, UGC List

Abstract

The present paper investigates void fraction and pressure drop characteristics of vertical air-water downflow through millichannels (0.83 ≤ Eotvos Number ≤ 20.6). Experiments have revealed the hydrodynamics to be a function of tube diameter and phase velocities with the functional form being different for different flow patterns. Accordingly, separate mechanistic models have been proposed to predict the aforementioned parameters for bubbly, slug, falling film and annular flow distributions. The proposed analysis have been validated with experimental results of the present study and those reported in literature

Flow pattern transition in gas‐liquid downflow through narrow vertical tubes

Journal

Journal NameAIChE Journal

Title of PaperFlow pattern transition in gas‐liquid downflow through narrow vertical tubes

PublisherWiley

Volume Number63

Page Number792–800

Published YearJune 2016

ISSN/ISBN No1547-5905

Indexed INScopus, PubMed, Web of Science, ABDC, Indian citation Index, Hein Database, EBSCO, UGC List

Abstract

The present report studies on the flow pattern transitions during vertical air water downflow through millichannels (0.83 ≤ Eötvös no. ≤ 20.63). Four basic flow patterns namely falling film flow, slug flow, bubbly flow, and annular flow are observed in the range of experimental conditions studied and their range of existence has been noted to vary with tube diameter and phase velocities. Based on experimental observations, phenomenological models are proposed to predict the transition boundaries between adjacent patterns. These have been validated with experimental flow pattern maps from the present experiments. Thus the study formalizes procedure for developing a generalized flow pattern map for gas‐liquid downflow in narrow tubes.

In Silico Exploration of SrZrS3 Chalcogenide Perovskite for Efficient Solar Energy Conversion

Conference

Title of PaperIn Silico Exploration of SrZrS3 Chalcogenide Perovskite for Efficient Solar Energy Conversion

Author NameAnkur H Dwivedi, Kuldip Mehta, Keyur Sangani, Ankur Pandya, Ritesh Kumar Chourasia

Year , VenueMarch 2024 , 2nd International Conference on Recent Advancements in Materials Science and Nanotechnology (RAMAN-2024), Faculty of Physics, Electronics and Communication Department, Nirma University, Ahmedabad, Gujarat, India.

Indexed INScopus

Green Nanoparticles as a New Drug Delivery System

Conference

Title of PaperGreen Nanoparticles as a New Drug Delivery System

Author NameAnkur H Dwivedi, Keyur Sangani, Ankur Pandya, Nimish Shah, Shibu Pillai, Milind Joshipura

Year , VenueMarch 2024 , 2nd International Conference on Recent Advancements in Materials Science and Nanotechnology (RAMAN-2024), Faculty of Physics, Electronics and Communication Department, Nirma University, Ahmedabad, Gujarat, India.

Indexed INScopus

Instrumental Testing of Quality of Water

Book Chapter

Book NameHandbook of Water Pollution

PublisherScrivener Publishing, Wiley

Author NameAmita Chaudhary, Ankur Dwivedi

Page Number417-440

Chapter TitleInstrumental Testing of Quality of Water

Published YearMarch 2024

ISSN/ISBN No978-1-119-90480-9

Indexed INScopus

Forced Degradation: An Important and Mandatory Criteria in Pharmaceutical Product Stability Study

Conference

Title of PaperForced Degradation: An Important and Mandatory Criteria in Pharmaceutical Product Stability Study

Author NameHimali Harsh Patel, Ankur Dwivedi, Shibu G. Pillai

Year , VenueFebruary 2024 , International Conference on Macromolecules Supramolecules and Nanotechnology (ICMSN-2024), L J University, Ahmedabad, Gujarat, India.

Indexed INScopus

Biopharmaceuticals: The Future of Healthcare

Conference

Title of PaperBiopharmaceuticals: The Future of Healthcare

Author NameAnkur H. Dwivedi, Nimish Shah, Shibu G. Pillai, Milind Joshipura

Year , VenueFebruary 2024 , International Conference on Macromolecules Supramolecules and Nanotechnology (ICMSN-2024), L J University, Ahmedabad, Gujarat, India.

Indexed INScopus

Chitosan And Its Derivatives In Wastewater Treatment Application

Journal

Journal NameMaterials Today: Proceedings

Title of PaperChitosan And Its Derivatives In Wastewater Treatment Application

PublisherElsevier

Volume NumberIn Press

Page NumberIn Press

Published YearNovember 2023

ISSN/ISBN No2214-7853

Indexed INScopus

Study On Industrial Applications Of Green Chemistry Principles

Journal

Journal NameEuropean Chemical Bulletin

Title of PaperStudy On Industrial Applications Of Green Chemistry Principles

PublisherEuropean Chemical Bulletin

Volume Number12(09)

Page Number1555-1568

Published YearNovember 2023

ISSN/ISBN No2063-5346

Indexed INScopus

Crosslinking of Starch

Book Chapter

Book NameStarch: Advances in Modifications, Technologies and Applications

PublisherSpringer

Author NameNimish Shah, Mamta Saiyad, Milind Joshipura, Shibu Pillai, Ankur Dwivedi

Page Number103-124

Chapter TitleCrosslinking of Starch

Published YearAugust 2023

ISSN/ISBN No978-3-031-35842-5

Indexed INScopus

Determining And Modeling Of Density And Viscosity Of Biodiesel-Diesel And Biodiesel-Diesel-butanol Blends

Journal

Journal NameInternational Journal of Chemical Reactor Engineering

Title of PaperDetermining And Modeling Of Density And Viscosity Of Biodiesel-Diesel And Biodiesel-Diesel-butanol Blends

PublisherDe Gruyter, Germany

Volume NumberNA

Page Number1-9

Published YearJuly 2023

ISSN/ISBN No1542-6580

Indexed INScopus, Web of Science

A Novel Natural Complexing Agent for Copper(II) Ion Determination

Conference

Title of PaperA Novel Natural Complexing Agent for Copper(II) Ion Determination

Author NameAnkur H Dwivedi, Amita Chaudhary, Shibu G Pillai, Nimish Shah

Year , VenueMarch 2023 , National Conference On Macromolecules and Nanotechnology (NCMN-2023), L J University, Ahmedabad, Gujarat, India.

Eco-Friendly Natural Ligand for Copper(II) Ion Detection & Determination

Conference

Title of PaperEco-Friendly Natural Ligand for Copper(II) Ion Detection & Determination

Author NameAnkur H Dwivedi, Amita Chaudhary, Shibu G Pillai, Milind Joshipura

Year , VenueMarch 2023 , UGC-CAS Sponsored National Conference On Chemistry & Environment (NCCE-2023), Sardar Patel University, Vallabh Vidyanagar, Anand, Gujarat, India.

Magnetic Field‑Controlled Bandgap of a Phosphorene‑Based PN‑Device for Sensing Application

Journal

Journal NameJournal of Electronic Materials

Title of PaperMagnetic Field‑Controlled Bandgap of a Phosphorene‑Based PN‑Device for Sensing Application

PublisherSpringer

Volume Number52(11)

Page Number1113-1120

Published YearNovember 2022

ISSN/ISBN No0361-5235

Indexed INScopus, Web of Science

Polymers For 3D Printing In Biomedical Engineering Applications

Journal

Journal NameJournal of Pharmaceutical Negative Results

Title of PaperPolymers For 3D Printing In Biomedical Engineering Applications

PublisherMedknow Publications and Media Pvt. Ltd.

Volume Number13(6)

Page Number1870-1880

Published YearOctober 2022

ISSN/ISBN No2229-7723

Indexed INScopus

The carrier mobility and sizable bandgap in fluorinated armchair boron nitride nanoribbons

Journal

Journal NameMaterials Today: Proceedings

Title of Paper The carrier mobility and sizable bandgap in fluorinated armchair boron nitride nanoribbons

PublisherElsevier

Volume Number67(1)

Page Number56-61

Published YearMay 2022

ISSN/ISBN No2214-7853

Indexed INScopus, Web of Science

A theoretical investigation on germanene/graphene composite pressure sensor under pre-stressed condition

Journal

Journal NamePhysica E: Low-dimensional Systems and Nanostructures

Title of PaperA theoretical investigation on germanene/graphene composite pressure sensor under pre-stressed condition

PublisherElsevier

Volume Number142

Page Number115308

Published YearMay 2022

ISSN/ISBN No1386-9477

Indexed INScopus, Web of Science

Processes for the Treatment of Industrial Wastewater

Book Chapter

Book NameAdvanced Materials and Technologies for wastewater Treatment

PublisherTailor & Francis Group, CRC Press, Florida, USA

Author NameNimish Shah, Ankur H Dwivedi, Shibu G. Pillai

Page Number285-316

Chapter TitleProcesses for the Treatment of Industrial Wastewater

Published YearSeptember 2021

ISSN/ISBN No987-0-367-68616-1

Indexed INScopus

Physical Processes in Wastewater Treatment

Book Chapter

Book NameAdvanced Materials and Technologies for wastewater Treatment

PublisherTailor & Francis Group, CRC Press, Florida, USA

Author NameNing Zhang, Ankur Dwivedi, Amita Chaudhary

Page Number59-83

Chapter TitlePhysical Processes in Wastewater Treatment

Published YearSeptember 2021

ISSN/ISBN No987-0-367-68616-1

Indexed INScopus

Review on Natural and Eco-Friendly Indicators

Conference

Title of PaperReview on Natural and Eco-Friendly Indicators

Author NameAnkur H Dwivedi, Amita Chaudhary, Shibu G. Pillai

Year , VenueJuly 2021 , National e-Conference on Recent Advances and Future Trends in Biological, Chemical and Physical Science (RAFTBCPS ’21), President Science College, Ahmedabad, Affiliated to Gujarat University, Gujarat, India.

Qualitative and Quantitative Analysis of Water

Book Chapter

Book NameApplied Water Science Volume 1: Fundamentals and Applications

PublisherScrivener Publishing, Wiley

Author NameAmita Chaudhary, Ankur Dwivedi, Ashok N Bhaskarwar

Page Number469-502

Chapter TitleQualitative and Quantitative Analysis of Water

Published YearMay 2021

ISSN/ISBN No978-1-119-72476-6

Indexed INScopus

Wonder of Chemistry: Ionic Liquids

Journal

Journal NameAnnals of the Romanian Society for Cell Biology

Title of PaperWonder of Chemistry: Ionic Liquids

PublisherAssociation of Cell Biology, Romania

Volume Number25(6)

Page Number3215-3220

Published YearMay 2021

ISSN/ISBN No1583-6258

Indexed INScopus, Web of Science

Supercritical fluids as green solvents

Book Chapter

Book NameHandbook of Greener Synthesis of Nanomaterials and Compounds Volume 1: Fundamental Principles and Methods

PublisherElsevier

Author NameAmita Chaudhary, Ankur Dwivedi, Sreedevi Upadhyayula

Page Number891-916

Chapter TitleSupercritical fluids as green solvents

Published YearApril 2021

ISSN/ISBN No978-0-12-821938-6

Indexed INScopus

Electronic properties of Mn-doped graphene

Journal

Journal NameMaterials Today: Proceedings

Title of PaperElectronic properties of Mn-doped graphene

PublisherElsevier

Volume Number47(2)

Page Number601-604

Published YearJanuary 2021

ISSN/ISBN NoISSN: 2214-7853

Indexed INScopus, Web of Science

Plumeria rubra f. rubra: A New Natural Indicator for the Complexometric Determination of Copper(II) Ion

Conference

Title of PaperPlumeria rubra f. rubra: A New Natural Indicator for the Complexometric Determination of Copper(II) Ion

Author NameAnkur H Dwivedi, Amita Chaudhary, Shibu G. Pillai, Neha Patni

Year , VenueDecember 2020 , Virtual International Conference on Chemical Sciences in Sustainable Technology and Development (IC2S2TD-2020), Applied Chemistry Department, S. V. National Institute of Technology, Surat, Gujarat, India.

Plumeria rubra f. rubra: A Novel Ligand for Cupric Ion Detection

Conference

Title of PaperPlumeria rubra f. rubra: A Novel Ligand for Cupric Ion Detection

Author NameAnkur H Dwivedi, Amita Chaudhary

Year , VenueOctober 2020 , 2nd International Conference on Future Aspects of Sustainable Technologies (FAST 2.0) (Virtual Platform), Department of Chemistry, Central Institute of Technology Kokrajhar, Kokrajhar, BTR, Assam, India.

Analysis of swelling and de-swelling kinetics and water absorbency in ionic medium for poly (Acrylamide-co-Acrylic Acid) hydrogel

Book Chapter

Book NameTechnologies for Sustainable Development: Proceedings of the 7th Nirma University International Conference on Engineering (NUiCONE 2019)

PublisherTailor & Francis Group, CRC Pres

Author NameNimish Shah, Ankur H Dwivedi

Page Number22-27

Chapter TitleAnalysis of swelling and de-swelling kinetics and water absorbency in ionic medium for poly (Acrylamide-co-Acrylic Acid) hydrogel

Published YearAugust 2020

ISSN/ISBN No978-0-367-33737-7

Indexed INScopus

Low Temperature Oxidation of Carbon Monoxide for Heat Recuperation: A Green Approach for Energy Production And A Catalytic Review

Journal

Journal NameJournal of Cleaner Production

Title of PaperLow Temperature Oxidation of Carbon Monoxide for Heat Recuperation: A Green Approach for Energy Production And A Catalytic Review

PublisherElsevier

Volume Number245

Page Number118838

Published YearJanuary 2020

ISSN/ISBN No0959-6526

Indexed INScopus, Web of Science

Electron Transport Parameters in Fluorinated Armchair Boron Nitride Nanoribbons

Conference

Title of PaperElectron Transport Parameters in Fluorinated Armchair Boron Nitride Nanoribbons

Author NameKeyur Sangani, Ankur H Dwivedi

Year , VenueSeptember 2019 , 7th Asian Network for Natural & Unnatural Materials-2019 (ANNUM 2019), Ahmedabad Management Association, Ahmedabad, Gujarat, India.

A Review on Separation and Purification Techniques for Biodiesel Production with Special Emphasis on Jatropha Oil as A Feedstock

Journal

Journal NameAsia-Pacific Journal of Chemical Engineering

Title of PaperA Review on Separation and Purification Techniques for Biodiesel Production with Special Emphasis on Jatropha Oil as A Feedstock

PublisherWiley

Volume Number14(5)

Page Numbere2361

Published YearAugust 2019

ISSN/ISBN No1932-2143

Indexed INScopus, Web of Science

Green indicators for acid-base titrations

Conference

Title of PaperGreen indicators for acid-base titrations

Author NameAnkur H Dwivedi, Shibu G Pillai

Year , VenueMarch 2019 , National Conference on Advances in Chemical Engineering and Science-2019 (ACES-2019), Department of Chemical Engineering, Indian Institute of Science Education and Research, Bhopal, Madhya Pradesh, India.

Natural Indicators

Conference

Title of PaperNatural Indicators

Author NameAnkur Dwivedi, Shibu G. Pillai

Year , VenueJanuary 2018 , National Seminar on Advancements in Chemical Technology-A Green Perspective, Department of Industrial Chemistry, ISTAR, Vallabh Vidyanagar, Anand, Gujarat

Implementation of FDM technology in MALE UAVs

Journal

Journal NameInternational Journal of Research

Title of PaperImplementation of FDM technology in MALE UAVs

PublisherInternational Journal of Research

Volume Number4(13)

Page Number884-888

Published YearOctober 2017

ISSN/ISBN No2348-6848

Indexed INOthers

Carrier Mobility Study in Zinc doped Armchair Graphene Nanoribbon via Phonon Interactions

Journal

Journal NameInternational Journal of Research

Title of PaperCarrier Mobility Study in Zinc doped Armchair Graphene Nanoribbon via Phonon Interactions

PublisherInternational Journal of Research

Volume Number4(13)

Page Number856-859

Published YearOctober 2017

ISSN/ISBN No2348-6848

Indexed INOthers

Chiral Separation: A Critical Parameter in Pharmaceutical Industries

Conference

Title of PaperChiral Separation: A Critical Parameter in Pharmaceutical Industries

Author NameAnkur Dwivedi

Year , VenueMarch 2016 , National Seminar On Recent Advances in Drug Discovery (RADD-2016), 28th March 2016 at Institute of Pharmacy, Nirma University, Ahmedabad, Gujarat

Electron Transport Parameters Study in Boron Nitride and Graphene Nitride Nanosheets

Book Chapter

Book NameNational Conference on Recent Trends in Technology and Management book proceedings

PublisherDepartment of Instrumentation and Control Engineering, Faculty of Technology, Dharmsinh Desai University, Nadiad, Gujarat

Author NameAnkur Pandya, Ankur H Dwivedi, Prafulla K. Jha

Page NumberChapter-25, 191-194

Chapter TitleElectron Transport Parameters Study in Boron Nitride and Graphene Nitride Nanosheets

Published YearMarch 2016

ISSN/ISBN No978-81-909832-1-1

Aloe vera: A magical Plant

Book

PublisherLambert Academic Publishing GmbH & Co. KG, Saarbrücken, Germany

Published YearJuly 2015

ISSN/ISBN No978-3-659-75464-7

Metallophthalocyanine Thin Films: Detection of Amines

Conference

Title of PaperMetallophthalocyanine Thin Films: Detection of Amines

Author NameShibu G. Pillai, Ankur Dwivedi, Neha Patni, Maulik Chaudhary, Khanjan Solanki

Year , VenueMarch 2015 , National seminar on Confluence of Supramolecular Chemistry & Nanoscience, 27th-28th March 2015 at Ahmedabad Management Association, ATIRA Campus, IIM-A Road, Ahmedabad, Gujarat

The Versatile Bamboo Charcoal

Conference

Title of PaperThe Versatile Bamboo Charcoal

Author NameAnkur Dwivedi, Neha Jain, Pooja Patel, Poonam Sharma

Year , VenueNovember 2014 , International Conference on Multidisciplinary Research & Practice, 30th November 2014 at Ahmedabad Management Association, ATIRA Campus, IIM-A Road, Ahmedabad, Gujarat

Extraction and Determination of Cerium (IV) by Derivative of Calix[4] Resorcinarene-Hydroxamic Acid

Book Chapter

Book NameInternational Conference on Advances in Chemical Engineering and Technology book proceedings

PublisherElsevier

Author NameShibu G. Pillai, Ankur Dwivedi, Neha Patni

Page NumberChapter-46, 203-206

Chapter TitleExtraction and Determination of Cerium (IV) by Derivative of Calix[4] Resorcinarene-Hydroxamic Acid

Published YearOctober 2014

ISSN/ISBN No9789351072843

Photosensitized Reactions: An Important Route of Reaction in Photochemistry

Conference

Title of PaperPhotosensitized Reactions: An Important Route of Reaction in Photochemistry

Author NameAnkur Dwivedi, Shibu G. Pillai

Year , VenueSeptember 2014 , International Conference on Emerging Trends in Science and Cutting Edge Technology, 28th September 2014 at YMCA, Cannought Palace, New Delhi

Technologies and Challenges in Water Purification

Conference

Title of PaperTechnologies and Challenges in Water Purification

Author NameAnkur Dwivedi

Year , VenueMay 2014 , International Conference on Advances in Trade, Commerce, Social Sciences, Management, Engineering and Hospitality, 10-11th May 2014 at Pudmajee Hall, MCCIA, Pune, Maharashtra

Phthalocyanine Thin Films: Application to Gas Sensing

Conference

Title of PaperPhthalocyanine Thin Films: Application to Gas Sensing

Author Name13. Shibu G Pillai, Ankur Dwivedi, Neha Patni, Smit S Patel, Alay D Gohel

Year , VenueOctober 2013 , National Conference on Supramolecules and Nanotechnology, 18-19th October 2013 at Gujarat Forensic Sciences University- Gandhinagar, Gujarat

Study of Some Oscillatory Reactions and Their Applications

Book

PublisherLambert Academic Publishing GmbH & Co. KG, Saarbrücken, Germany

Published YearAugust 2013

ISSN/ISBN No978-3-659-43924-7

Wheat as a Promising Substitute of Corn for Bioethanol Production” Procedia Engineering

Journal

Journal NameProcedia Engineering

Title of PaperWheat as a Promising Substitute of Corn for Bioethanol Production” Procedia Engineering

PublisherElsevier

Volume Number51

Page Number355-362

Published YearApril 2013

ISSN/ISBN No1877-7058

Indexed INScopus, Indian citation Index, UGC List

Liquid-Liquid Extraction and Spectrophotometric Determination of Vanadium(V) with p-Carboxy-N-Phenyl-Calix[4]resorcinarene-hydroxamic Acid

Journal

Journal NameProcedia Engineering

Title of PaperLiquid-Liquid Extraction and Spectrophotometric Determination of Vanadium(V) with p-Carboxy-N-Phenyl-Calix[4]resorcinarene-hydroxamic Acid

PublisherElsevier

Volume Number51

Page Number347-354

Published YearApril 2013

ISSN/ISBN No1877-7058

Indexed INScopus, Web of Science, Indian citation Index, UGC List

Chemical Engineering and Chemistry

Book

PublisherLambert Academic Publishing GmbH & Co. KG, Saarbrücken, Germany

Published YearSeptember 2012

ISSN/ISBN No978-3-659-24378-3

Spectrophotometric Trace Analysis of Transition Metal Ions

Book

PublisherLambert Academic Publishing GmbH & Co. KG, Saarbrücken, Germany

Published YearJuly 2012

ISSN/ISBN No978-3-659-18634-9

Photochemical Degradation of Halo-Organic Compounds

Book

PublisherLambert Academic Publishing GmbH & Co. KG, Saarbrücken, Germany

Published YearApril 2012

ISSN/ISBN No978-3-8484-8285-6

Mass Spectrometry: An Important Tool in Clinical Research

Conference

Title of PaperMass Spectrometry: An Important Tool in Clinical Research

Author NameAnkur Dwivedi, Shibu G. Pillai, Neha Patni

Year , VenueDecember 2011 , 2nd Nirma University International Conference (NUiCON-2011), 8-10th December 2011 at Nirma University, Ahmedabad, Gujarat

Synthesis and Characterization of p-carboxy-N-phenyl calix[4]resorcinarene-hydroxamic acid

Conference

Title of PaperSynthesis and Characterization of p-carboxy-N-phenyl calix[4]resorcinarene-hydroxamic acid

Author NameShibu G. Pillai, Ankur Dwivedi, Neha Patni

Year , VenueDecember 2011 , 2nd Nirma University International Conference (NUiCON-2011), 8-10th December 2011 at Nirma University, Ahmedabad, Gujarat

Analysis of Current Scenario of Biofuels in India specifically Bio-diesel and Bio-ethanol

Conference

Title of PaperAnalysis of Current Scenario of Biofuels in India specifically Bio-diesel and Bio-ethanol

Author NameNeha Patni, Shibu G. Pillai, Ankur Dwivedi

Year , VenueDecember 2011 , 2nd Nirma University International Conference (NUiCON-2011), 8-10th December 2011 at Nirma University, Ahmedabad, Gujarat

Methylene Blue Sensitized Photodechlorination of Isomeric Mono- and Dichloroanilines via Molecular Complex Formation Mechanism

Journal

Journal NameE-Journal of Chemistry

Title of PaperMethylene Blue Sensitized Photodechlorination of Isomeric Mono- and Dichloroanilines via Molecular Complex Formation Mechanism

PublisherHindawi

Volume Number8(3)

Page Number1086-1093

Published YearJuly 2011

ISSN/ISBN No0973-4945

Indexed INScopus, Web of Science, Indian citation Index, UGC List

Simple and economic spectrophotometric method for simultaneous photosensitized dechlorination and decarboxylation of isomeric mono- and dichlorobenzoic Acids

Journal

Journal NameE-Journal of Chemistry

Title of PaperSimple and economic spectrophotometric method for simultaneous photosensitized dechlorination and decarboxylation of isomeric mono- and dichlorobenzoic Acids

PublisherHindawi

Volume Number7(S1)

Page NumberS111-S120

Published YearDecember 2010

ISSN/ISBN No0973-4945

Indexed INScopus, Web of Science, Indian citation Index, UGC List

Photosensitized dechlorination and decarboxylation of o-, m- and p-benzoic acids

Conference

Title of PaperPhotosensitized dechlorination and decarboxylation of o-, m- and p-benzoic acids

Author NameAnkur H Dwivedi, Umeshchandra Pande

Year , VenueDecember 2005 , National Symposium on Recent Trends in Nanomaterials and Photochemistry, 23-24th December 2005 at Gujarat University, Ahmedabad, Gujarat, India

Spectrophotometric study of photosensitized dechlorination of isomeric chloroanisidines

Journal

Journal NameJournal of Indian Chemical Society

Title of PaperSpectrophotometric study of photosensitized dechlorination of isomeric chloroanisidines

PublisherThe Indian Chemical Society

Volume Number82(5)

Page Number424-427

Published YearMay 2005

ISSN/ISBN No0019-4522

Indexed INScopus, Web of Science, Indian citation Index

Study of Photosensitized Dechlorination of Chloroanisidines by Methylene Blue via Molecular Complex Mechanism

Conference

Title of PaperStudy of Photosensitized Dechlorination of Chloroanisidines by Methylene Blue via Molecular Complex Mechanism

Author NameAnkur H Dwivedi, Umeshchandra Pande

Year , VenueJanuary 2005 , 92nd Indian Science Congress, 3-7th January 2005 at Ahmedabad, Gujarat

Study of formation of molecular complex in photochemically excited state of anisidines and cationic dye

Conference

Title of PaperStudy of formation of molecular complex in photochemically excited state of anisidines and cationic dye

Author NameAnkur H Dwivedi, Umeshchandra Pande

Year , VenueJanuary 2004 , 91st Indian Science Congress, 3-7th January 2004 at Chandigarh, Punjab

Spectrophotometric study of photosensitized dechlorination of some isomeric mono- and dichloronitrobenzenes

Journal

Journal NameJournal of Photochemistry and Photobiology A: Chemistry

Title of PaperSpectrophotometric study of photosensitized dechlorination of some isomeric mono- and dichloronitrobenzenes

PublisherElsevier

Volume Number154(2-3)

Page Number303-309

Published YearJanuary 2003

ISSN/ISBN No1010-6030

Indexed INScopus, Web of Science, UGC List

Photosensitized dechlorination of isomeric monochloronitrobenzenes

Conference

Title of PaperPhotosensitized dechlorination of isomeric monochloronitrobenzenes

Author NameAnkur H Dwivedi, Umeshchandra Pande

Year , VenueJanuary 2002 , 89th Indian Science Congress, 3-7th January 2002 at Lucknow, Uttar Pradesh

Anaerobic Treatment of Real Dye Wastewater Using a Modified Internal Circulation Reactor

Journal

Journal NameJournal of Environmental Engineering (United States)

Title of PaperAnaerobic Treatment of Real Dye Wastewater Using a Modified Internal Circulation Reactor

PublisherAmerican Society of Civil Engineers

Volume Number150(1)

Page Number04023092

Published YearJanuary 2024

ISSN/ISBN No1943-7870

Indexed INScopus, Web of Science

Abstract

Proper treatment of dye wastewater containing significant concentrations of organic matter is imperative for the abatement of water pollution. Unfortunately, most studies on the treatment of dye wastewater employ synthetic wastewaters that hardly match the characteristics of real wastewater. In the present study, real wastewater generated from the manufacturing of Solvent Black 46 (SB46) dye was treated in an internal circulation reactor, modified with a bed of sponge cubes. The reactor was operated in different phases to investigate the impact of parameters such as feed chemical oxygen demand (COD), organic loading rate (OLR), and hydraulic retention time (HRT) on COD removal and methane generation. At a feed COD concentration of and an OLR of up to , 82% COD was removed with methane generation ranging from 0.28 to removed. COD removal and methane generation increased with an increase in upflow velocity. The rate of substrate (COD) removal correlated well with the organic loading rate using the modified Stover–Kincannon model with a correlation factor ( ) of 0.9974. LC-MS analysis of treated wastewater revealed that one of the constituents of SB46, namely Metanil yellow, was decomposed by azo bond cleavage, producing corresponding aromatic amines. Overall, this study provides evidence of the successful anaerobic treatment of real industrial wastewater and its potential contribution to achieving UN Sustainable Development Goals 6 (Clean Water and Sanitation) and 7 (Affordable and Clean Energy). Importantly, the process parameters developed in this study have been utilized by the industry to install two full-scale anaerobic reactors to treat SB46 wastewater which has led them to double the SB46 production while conforming to the prescribed environmental discharge norms.

Effect of Operating Parameters on O3, O3/UV, O3/UV/PS Process Using Bubble Column Reactor for Degradation of Reactive Dyes

Journal

Journal NameJournal of The Institution of Engineers (India): Series A

Title of PaperEffect of Operating Parameters on O3, O3/UV, O3/UV/PS Process Using Bubble Column Reactor for Degradation of Reactive Dyes

PublisherSPRINGER

Volume Number104

Page Number565-578

Published YearSeptember 2023

ISSN/ISBN No2250-2157

Indexed INScopus, Web of Science

Abstract

Reactive dyes are widely consumed in the textile industrial sector due to their excellent properties, bright color, excellent color fastness, and ease of application; nevertheless, they are challenging to treat using existing conventional treatment methods due to their refractory and hazardous nature. In the present work, simulated reactive dye wastewater degradation was experimented with using Ozonation, O3/UV, and O3/UV/PS process. The experiments were carried out in a 3 L reactor for two different reactive dyes: reactive red 120 (RR120) and reactive yellow 145 (RY145), with their initial concentration ranges from 500 to 1500 mgL−1. The present study concludes that simple ozonation resulted in only 49% TOC removal, while O3/UV processes removed 57% TOC after 90 min of treatment. The highest efficiency was achieved in a coupled O3/UV/PS process with TOC removal of 88% at 66 W UV intensity, 1:40 TOC:PS ratio, 1.86 gh−1 ozone dose, and alkaline pH. It was also observed that the TOC removal was higher in RR120 compared to RY145. Finally, electrical energy per order was evaluated for the various ozone-based AOPs, and O3/UV/PS provided the best results with % TOC removal.

Novel polyol(acrylic)-isocyanate-based 2k-polyurethane coatings with embedded nanocomposite matrix for corrosion inhibition application

Journal

Journal NameApplied Nanoscience

Title of PaperNovel polyol(acrylic)-isocyanate-based 2k-polyurethane coatings with embedded nanocomposite matrix for corrosion inhibition application

PublisherSpringer

Volume Number12(9)

Page Number2753-2763

Published YearAugust 2022

ISSN/ISBN No2190-5517

Indexed INScopus, Web of Science

Abstract

The present study demonstrates a scalable polyurethane technology based upon a nanocomposite matrix to synthesize high-performance anticorrosion coatings. Systems based on acrylic polyol and modified isocyanate structure chemistry were developed along with the incorporation of functional nanoparticles to develop superior corrosion inhibition coatings. They were subjected to inspection analysis to evaluate basic coatings properties. Moreover, corrosion resistance was evaluated according to standard methods such as salt spray tests (ASTM B117) and modified immersion resistance tests with cyclic exposure (ASTM G31-72). Electrochemical impedance spectra (EIS) analysis was conducted for coatings before and after exposure to compare the system performance post-exposure. Salt spray resistance of coating at 1250-h exposure (for a single coat) was reported with 8.5% surface loss, and the coatings withstood over 500–1000 h of corrosion immersion test (for different formulations). EIS studies before and after immersion of panels also revealed the reasonable extent of retention of low-impedance resistance of coatings, which merely dropped from 4.47 × 108 Ω to 3.16 × 108 Ω for the most durable coating, indicating its retention in the behavior of corrosion resistance in immersion tests. The performance showed promising durability with excellent inhibition corrosion resistance, which is a combined virtue property of functional nanoparticles and cross-linking polyurethane system in the appropriate dosage, that minimizes the contact of the metal substrate with the outer atmosphere to make coatings durable and peel-resistant (higher adhesion) in the different types of harsh environments.

Synthesis of Nano Ag-La-Co Composite Metal Oxide for Degradation of RB 5 Dye Using Catalytic Ozonation Process

Journal

Journal NameOzone: Science & Engineering, 2022•

Title of PaperSynthesis of Nano Ag-La-Co Composite Metal Oxide for Degradation of RB 5 Dye Using Catalytic Ozonation Process

PublisherTaylor & Francis

Volume Number44(2)

Page Number182-195

Published YearApril 2021

ISSN/ISBN No1547-6545

Indexed INScopus, Web of Science

Abstract

Nanoscale composite metal oxide of Ag-La-Co was prepared by co-precipitation method for the treatment of Reactive Black 5 using catalytic ozonation process. Further, the catalyst was characterized by transmission electron microscope, X-ray powder diffraction (XRD), scanning electron microscope - energy dispersive X-ray (SEM-EDX) and Brunauer–Emmett–Teller (BET) surface area analyzer for clarity of the phenomenon. The factors such as amount of catalyst (0.2–1.2 g/L), solution pH (2, 7, and 12), initial dye concentration (100–1,000 mg/L), and ozone flow rate (30–60 LPH) were found to influence the process. The characterization results confirm the formation of the composite metal oxide of Ag-La-Co. The degradation efficiency of catalytic ozonation was 63% compared to 32% and 4% in ozonation without catalyst and adsorption on the catalyst, respectively. Furthermore, it was observed that a pseudo-first-order kinetics model fits well with the experimental data. In addition, the effect of tert-butyl alcohol, a hydroxyl radical scavenger, has been studied. Lastly, the repetitive use of the synthesized catalyst showed that even after three consecutive runs, the catalytic activity is not much degraded, and therefore, the degradation efficiency of the synthesized catalyst was comparatively high; about 95% of Total Organic Carbon (TOC) removal was achieved at solution pH 7, amount of catalyst 1 g/L, reaction time 80 min, and ozone flow rate 30 LPH, indicating an economically viable option for industrial wastewater treatment.

Homogeneous photocatalytic degradation of azo dye Reactive Black 5 using Fe(III) ions under visible light

Journal

Journal NameEnvironmental Technology

Title of PaperHomogeneous photocatalytic degradation of azo dye Reactive Black 5 using Fe(III) ions under visible light

PublisherTaylor & Francis

Volume Number43(2)

Page Number199-206

Published YearJune 2020

ISSN/ISBN No1479-487X

Indexed INScopus, Web of Science

Abstract

Efficient and cost-effective method to destroy complex dyes is warranted to combat increasing water pollution. In the present study, homogeneous photocatalytic oxidation (PCO) of Reactive Black 5 (RB5) dye was studied using ferric ions (Fe(III)) under visible light (VL) irradiation and sunlight (SL). In the presence of 5 mM ferric ions and at pH 2.6, more than 80% of initial 20 mg/L RB5 was decolourized in 60 min under artificial VL. Decolourization followed pseudo first-order kinetics with the reaction rate constant 0.0356 min−1. 79% of initial COD was removed at the end of 60 min, suggesting mineralization of RB5 as the main cause of decolourization. Using similar experimental conditions under SL, more than 90% RB5 was decolourized in 15 min with an almost 10-fold increase in the reaction rate constant (0.34 min−1). Rate and extent of RB5 destruction significantly decreased in the presence of •OH scavenger indicating photoreduction of Fe-hydroxo species and generation of •OH as the main mechanism of RB5 degradation. RB5 removal increased from ca. 30% to 84% with the increase in Fe(III) concentration from 0.5 to 5 mM. The corresponding 1st-order rate constants increased linearly from 0.006 to 0.036 min−1. RB5 degradation decreased linearly (R2 = 0.98) from 91.7% to 63.3% with the increase in initial RB5 concentration from 10 to 40 mg/L. Fe(III) induced homogenous PCO appears to be a reliable and low-cost method of advanced oxidation without the need for costly reagent such as H2O2.

Solvent degradation studies using hydrodynamic cavitation

Journal

Journal Name Environmental Progress and Sustainable Energy

Title of PaperSolvent degradation studies using hydrodynamic cavitation

PublisherAmerican Institute of Chemical Engineers

Volume Number37(1)

Page Number295-304

Published YearJanuary 2018

ISSN/ISBN No1944-7442

Indexed INScopus

Abstract

Hydrodynamic cavitation for the degradation of organic solvents was investigated in detail using a newer form of cavitating device-vortex diode. The results were also compared with that using conventional cavitating device orifice. Removal of three different organic solvents—acetone, methyl ethyl ketone (MEK), and toluene were studied on a pilot plant with capacity of 1 m3/h. The effect of differe

Assessing groundwater vulnerability using GIS-based DRASTIC model for Ahmedabad district, India

Journal

Journal NameEnvironmental Earth Sciences

Title of PaperAssessing groundwater vulnerability using GIS-based DRASTIC model for Ahmedabad district, India

PublisherSpringer-Verlag GmbH Germany.

Volume Number76(12)

Page Number440

Published YearNovember 2017

ISSN/ISBN No1866-6280

Indexed INScopus

Abstract

The present research aims to derive the intrinsic vulnerability of groundwater against contamination using the GIS platform. The study applies DRASTIC model for Ahmedabad district in Gujarat, India. The model uses parameters like depth, recharge, aquifer, soil, topography, vadose zone and hydraulic conductivity, which depict the hydrogeology of the area. The research demonstrates that northern par

Biodegradation of a Real Dye Wastewater Containing High Concentration of Total Dissolved Inorganic Salts (TDIS) in a Lab-Scale Activated Sludge Unit

Journal

Journal Name Journal of The Institution of Engineers (India): Series A

Title of PaperBiodegradation of a Real Dye Wastewater Containing High Concentration of Total Dissolved Inorganic Salts (TDIS) in a Lab-Scale Activated Sludge Unit

PublisherSpringer

Volume NumberJournal of The Institution of Engineers (India): Series A

Page Number11-16

Published YearNovember 2017

Indexed INScopus

Abstract

Biodegradation studies on Dye wastewater (DW) are normally conducted on simulated wastewaters or aqueous dyes solutions supported by growth medium, and often, an easy carbon source such as glucose. This rarely resembles actual DW which is characterized by the presence of complex organic compounds, and a high concentration of Total Dissolved Inorganic Salts (TDIS). Biodegradation of real Direct Dye

Application of BDD and DSA electrodes for the removal of RB 5 in batch and continuous operation

Journal

Journal Name Journal of Water Process Engineering

Title of PaperApplication of BDD and DSA electrodes for the removal of RB 5 in batch and continuous operation

PublisherElsevier

Volume Number17

Page Number11-21

Published YearJanuary 2017

ISSN/ISBN No2214-7144

Indexed INScopus

Abstract

The experiments on removal of Reactive black 5 (RB 5) dye were performed in batch and continuous operation using boron doped diamond (BDD) and dimensionally stable anode (DSA) electrodes. The electrooxidation of simulated wastewater was carried out in aqueous medium of pH 2 containing 100 mg/L RB 5 on Si/BDD and Nb/BDD electrodes. For batch degradation studies of RB 5, 50 mA/cm2current density was

Decolourization and mineralization of reactive black-5 with transition metal oxide coated electrodes by electrochemical oxidation

Journal

Journal NameProcedia Engineering

Title of PaperDecolourization and mineralization of reactive black-5 with transition metal oxide coated electrodes by electrochemical oxidation

PublisherElsevier

Volume Number51

Page Number335-341

Published YearAugust 2013

ISSN/ISBN No1877-7058

Indexed INScopus

Preparation and characterization of SnO2 thin film coating using rf-plasma enhanced reactive thermal evaporation

Journal

Journal NameProcedia Engineering

Title of PaperPreparation and characterization of SnO2 thin film coating using rf-plasma enhanced reactive thermal evaporation

PublisherElsevier

Volume Number51

Page Number473-479

Published YearAugust 2013

ISSN/ISBN No1877-7058

Indexed INScopus

Electro-catalytic materials (electrode materials) in electrochemical wastewater treatment

Journal

Journal NameProcedia Engineering

Title of PaperElectro-catalytic materials (electrode materials) in electrochemical wastewater treatment

PublisherElsevier

Volume Number51

Page Number430-435

Published YearAugust 2013

ISSN/ISBN No1877-7058

Indexed INScopus

Studies on degradation of reactive red 135 dye in wastewater using ozone

Journal

Journal NameProcedia Engineering

Title of PaperStudies on degradation of reactive red 135 dye in wastewater using ozone

PublisherElsevier

Volume Number51

Page Number451-455

Published YearAugust 2013

ISSN/ISBN No1877-7058

Indexed INScopus

Antimicrobial activity of silver and copper nanoparticles: Variation in sensitivity across various strains of bacteria and fungi

Book Chapter

Book NameNano-Antimicrobials: Progress and Prospects

PublisherSpringer Nature Switzerland AG

Author NameJayesh Ruparelia

Page Number225-251

Chapter TitleAntimicrobial activity of silver and copper nanoparticles: Variation in sensitivity across various strains of bacteria and fungi

Published YearDecember 2011

ISSN/ISBN No978-3-642-24427-8

Indexed INScopus

Electrocoagulation treatment of simulated floor-wash containing Reactive Black 5 using iron sacrificial anode

Journal

Journal NameJournal of Hazardous Materials

Title of PaperElectrocoagulation treatment of simulated floor-wash containing Reactive Black 5 using iron sacrificial anode

PublisherElsevier

Volume Number197

Page Number128-136

Published YearDecember 2011

ISSN/ISBN No0304-3894

Indexed INScopus

Use of Carbon Nanotubes in Water Treatment

Book Chapter

Book NameNanoscale Multifunctional Materials: Science and Applications

PublisherWiley

Author NameJayesh Ruparelia

Page Number321-368

Chapter TitleUse of Carbon Nanotubes in Water Treatment

Published YearAugust 2011

ISSN/ISBN No9781118114063

Indexed INScopus

Potential of carbon nanomaterials for removal of heavy metals from water

Journal

Journal NameDesalination

Title of PaperPotential of carbon nanomaterials for removal of heavy metals from water

PublisherElsevier

Volume Number232(1-3)

Page Number145-156

Published YearNovember 2008

ISSN/ISBN No0011-9164

Indexed INScopus

Abstract

Heavy metals, such as, cadmium, lead, nickel and zinc can be removed from water using sorbents. The rate and extent of removal may be enhanced by choice of appropriate sorbents. In this study heavy metal sorption was studied on indigenously synthesized carbon nanomaterials (CNMs). Two CNMs differing in surface morphology were synthesized using turpentine oil in a chemical vapour deposition (CVD) setup by varying the process parameters. Activation and catalyst removal were achieved by post-treatment with HNO3 and KOH. Characterization of the CNMs produced revealed that both comprised of graphitic amorphous carbon, however, while the nanocarbon (NC) produced using cobalt catalyst in N2 atmosphere comprised of varying grain sizes indicative of soot, the nanoporous carbon (NPC) produced using silica catalyst in H2 atmosphere had a distinctive uniformly porous surface morphology. Comparative sorption studies with cadmium, lead, nickel and zinc also revealed greater sorption on NPC compared to NC. Batch isotherms for the various heavy metals using NPC and a commercial activated carbon (AC) widely used for metal sorption revealed that NPC is characterized by significantly higher metal sorption capacity and more favourable sorption energetics. The superior performance of NPC as a sorbent may be due to its unique nanoporous structure.

Strain specificity in antimicrobial activity of silver and copper nanoparticles

Journal

Journal NameActa Biomaterialia

Title of PaperStrain specificity in antimicrobial activity of silver and copper nanoparticles

PublisherElsevier

Volume Number4(3)

Page Number707-716

Published YearMay 2008

ISSN/ISBN No1742-7061

Indexed INScopus

Abstract

The antimicrobial properties of silver and copper nanoparticles were investigated using Escherichia coli (four strains), Bacillus subtilis and Staphylococcus aureus (three strains). The average sizes of the silver and copper nanoparticles were 3 nm and 9 nm, respectively, as determined through transmission electron microscopy. Energy-dispersive X-ray spectra of silver and copper nanoparticles revealed that while silver was in its pure form, an oxide layer existed on the copper nanoparticles. The bactericidal effect of silver and copper nanoparticles were compared based on diameter of inhibition zone in disk diffusion tests and minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) of nanoparticles dispersed in batch cultures. Bacterial sensitivity to nanoparticles was found to vary depending on the microbial species. Disk diffusion studies with E. coli and S. aureus revealed greater effectiveness of the silver nanoparticles compared to the copper nanoparticles. B. subtilis depicted the highest sensitivity to nanoparticles compared to the other strains and was more adversely affected by the copper nanoparticles. Good correlation was observed between MIC and MBC (r2 = 0.98) measured in liquid cultures. For copper nanoparticles a good negative correlation was observed between the inhibition zone observed in disk diffusion test and MIC/MBC determined based on liquid cultures with the various strains (r2 = −0.75). Although strain-specific variation in MIC/MBC was negligible for S. aureus, some strain-specific variation was observed for E. coli.

Photoelectrocatalytic water splitting for efficient hydrogen production: A strategic review

Journal

Journal NameFuel

Title of PaperPhotoelectrocatalytic water splitting for efficient hydrogen production: A strategic review

PublisherElsevier

Volume Number381

Page Number133642

Published YearFebruary 2025

ISSN/ISBN No1873-7153

Indexed INScopus, Web of Science

Abstract

Hydrogen generation via water splitting is the most captivating one, out of the different technologies employed for its production, owing to the abundance of the essential raw material (water) on our planet. Photoelectrocatalysis (PEC), which combines two powerful advanced oxidation processes, viz., photocatalysis and electrocatalysis, has the potential to use solar energy to split water into Oxygen and Hydrogen at ambient temperature and pressure. This article is a strategic review that discusses the ingenious techniques for increasing the overall efficiency of a PEC process for the purpose of Hydrogen production via water splitting. It analyses the various schemes and parameters of electrode engineering, electrolyte effects and cell architecture. The principal emphasis is on skilled photoelectrode development and process intensification by synergistic operations. This review provides a reference for a comparative …

PLASTIC DEGRADATION BY PHOTOCATALYSIS: BASIC CONCEPTS AND GENERAL MECHANISMS

Book Chapter

Book NamePLASTIC DEGRADATION AND CONVERSION BY PHOTOCATALYSIS (VOLUME 1): A SUSTAINABLE APPROACH

PublisherAMERICAN CHEMICAL SOCIETY (ACS) PUBLICATIONS

Author NameLeena V Bora

Page Number1-22

Chapter TitlePLASTIC DEGRADATION BY PHOTOCATALYSIS: BASIC CONCEPTS AND GENERAL MECHANISMS

Published YearDecember 2024

ISSN/ISBN No9780841296602

Indexed INScopus, Web of Science

Abstract

Owing to their several desirable properties, plastics have brought a lot of convenience to us and have become an integral part of our lives. However, being non-biodegradable, the disposal and treatment of waste plastic remain a ubiquitous issue. Conventional treatment strategies may not be able to satisfactorily break the C-C, C-O or C-H bonds inherently present in their structures. Photocatalysis presents one of the promising routes for addressing the growing need of plastic waste treatment/disposal. This approach employs semiconductor materials as photocatalysts. When exposed to light of appropriate wavelength, these photocatalysts generate electron-hole pairs that initiate redox reactions, forming highly reactive oxygen species (ROS) such as hydroxyl radicals. These ROS can effectively break down polymer chains in plastics through a series of oxidative reactions, ultimately leading to polymer fragmentation …

Green nanomaterials based nanosensors

Book Chapter

Book NameHandbook Comprehensive Analytical Chemistry

PublisherElsevier

Chapter TitleGreen nanomaterials based nanosensors

Published YearJanuary 2024

ISSN/ISBN No0166-526X

Indexed INScopus, Web of Science

Biowaste derived UV–Visible-NIR active Z-scheme CaO/MoS2 photocatalyst as a low-cost, waste-to-resource strategy for rapid wastewater treatment

Journal

Journal NameJournal of Photochemistry and Photobiology A: Chemistry

Title of PaperBiowaste derived UV–Visible-NIR active Z-scheme CaO/MoS2 photocatalyst as a low-cost, waste-to-resource strategy for rapid wastewater treatment

PublisherElsevier

Volume Number446

Page Number115172

Published YearJanuary 2024

ISSN/ISBN No1873-2666

Indexed INScopus, Web of Science

Abstract

There is a need for industries to adopt greener strategies to minimise the environmental impact and overuse of natural resources. In the light of alarming environmental conditions, there is an expanding and progressing centre around the concept of waste to resource strategy. With this inspiration, a low-cost marine biowaste-based CaO/MoS2 photocatalyst synthesized by ball milling is proposed with a viable green route for water remediation. The mass ratio of CaO and MoS2 were optimized for the photocatalytic reduction of cationic methylene blue (MB) as a probe dye and an actual industrial dye wastewater. It was found that 45CaO/55MoS2 (45-CaMo) outperformed all the proportions including the conventionally popular TiO2. 70% of MB got discoloured in 10 min of exposure to natural sunlight following Langmuir-Hinshelwood model with a rate constant of 0.064 min−1 and exhibiting good photo-stability. The …

Treatment of waste using waste-derived materials and free energy: A practical concept of circular-economy

Journal

Journal NameSustainable Chemistry and Pharmacy

Title of PaperTreatment of waste using waste-derived materials and free energy: A practical concept of circular-economy

PublisherElsevier

Volume Number37

Page Number101341

Published YearJanuary 2024

ISSN/ISBN No2352-5541

Indexed INScopus, Web of Science

Abstract

Controlling industrial effluent and treating it with improvised technologies continues to be a dominant research topic in the scientific community. In this study, the concepts of circular-economy and control-of-waste-by-waste were applied to the synthesis of a photocatalyst composite composed entirely of waste resources, namely waste rust (Fe2O3) and seashells (CaO). The ratio of these two waste materials was optimized to yield a composition 10% Fe2O3/90% CaO (10-FC) that was effective in decolorizing 85% of methylene blue in 60 min, with a formal quantum efficiency of 0.27% in direct sunlight. The heterogeneous photocatalyst was characterized by UV–Vis/NIR, SEM and XRD and is proposed to follow Langmuir-Hinshelwood kinetics and Z-scheme mechanism of charge transfer. Here, waste products were integrated and utilized to create a resource that is recommended for the treatment of dye effluent using a renewable energy source. This research aims to identify elements present in waste dumps and create a valuable resource from them to promote sustainable practices.

Sustainable feedstocks for 4D printing: biodegradable polymers and natural resources

Journal

Journal NameGreen Materials

Title of PaperSustainable feedstocks for 4D printing: biodegradable polymers and natural resources

PublisherICE publishing

Page Number1-17

Published YearJune 2023

ISSN/ISBN No2049-1220

Indexed INScopus, Web of Science

Abstract

Additive manufacturing is an emerging technology supported by ‘Industry 4.0’. When combined with a stimulus-responsive behavior, incorporating the fourth dimension of time, it results in a manufacturing technique known as four-dimensional (4D) printing. 4D-printed entities have the distinctive characteristic of property transformation, under the influence of a drafted stimulus, which can be cleverly engineered for the desired application. The conventional stimulus-driven smart printing inks deployed in 4D printing are non-biodegradable polymers that pose a challenge to sustainability. Hence, it is imperative to appraise the utilization of sustainable raw materials, composed of natural and synthetic biodegradable polymers, as feedstocks for 4D printing. Natural resources have fluctuating properties, which make them receptive toward intelligent engineering. This review is an effort toward the implementation of sustainable feedstocks as printing inks for 4D printing, for eventual environmental benignity. It covers several sustainable raw materials for 4D printing and the strategies to use them in conjunction with conventional inks in order to bring down the volume of non-biodegradables. This review can serve as a reference for designers and engineers wishing to use sustainable inks for 4D printing, thereby boosting the momentum needed to consolidate this next-generation technology in line with the UN Sustainable Development Goals.

Waste fly ash–ZnO as a novel sunlight-responsive photocatalyst for dye discoloration

Journal

Journal NameWater Science and Engineering

Title of PaperWaste fly ash–ZnO as a novel sunlight-responsive photocatalyst for dye discoloration

PublisherElsevier

Volume Number16

Page Number 76-82

Published YearMarch 2023

ISSN/ISBN NoISSN: 2405-8106

Indexed INScopus, PubMed, Web of Science, ABDC, Indian citation Index

A brief overview on advances in water treatment process

Book Chapter

Book Name3D Printing Technology for Water Treatment Applications

PublisherElsevier

Author NameLeena V. Bora

Page Number107-131

Chapter TitleA brief overview on advances in water treatment process

Published YearJanuary 2023

ISSN/ISBN NoISBN 978-0-323-99861-1

Indexed INScopus

Solar photocatalytic pathogenic disinfection: Fundamentals to state-of-the-art

Journal

Journal NameWater Science and Engineering

Title of PaperSolar photocatalytic pathogenic disinfection: Fundamentals to state-of-the-art

PublisherElsevier

Published YearDecember 2022

ISSN/ISBN NoISSN: 2405-8106

Indexed INScopus, PubMed, Web of Science, ABDC, Indian citation Index

Trash GGBFS-based geopolymer as a novel sunlight-responsive photocatalyst for dye discolouration

Journal

Journal NameJournal of the Indian Chemical Society

Title of PaperTrash GGBFS-based geopolymer as a novel sunlight-responsive photocatalyst for dye discolouration

PublisherElsevier

Volume Number99

Page Number100560

Published YearJuly 2022

ISSN/ISBN NoISSN 0019-4522

Indexed INScopus, PubMed, Web of Science

Photocatalytic decolouration, degradation and disinfection capability of Ag2CO3/ZnO in natural sunlight

Journal

Journal NameJournal of the Indian Chemical Society

Title of PaperPhotocatalytic decolouration, degradation and disinfection capability of Ag2CO3/ZnO in natural sunlight

PublisherElsevier

Volume Number99/2

Page Number100311

Published YearFebruary 2022

ISSN/ISBN NoISSN 0019-4522

Indexed INScopus, Web of Science, ABDC, Indian citation Index, EBSCO

Abstract

In this study, a series of hybrid Ag2CO3/ZnO composites were synthesised via a simple precipitation route and investigated for discolouration-degradation of Methylene Blue and disinfection of Escherichia coli in natural sunlight. It was observed that the photonic efficiency of discolouration was more than 6 times that of the conventionally popular TiO2, under experimental conditions; 100% Total Organic Carbon reduction was observed in 30 ​min and 32% disinfection in an hour. This upswing in the performance is attributed to favourable modulation of the dynamics of charge transfer. The photocatalysts were characterized by X-Ray Diffraction, Scanning Electron Microscopy, Transmission Electron Microscopy, Brunauer, Emmett and Teller and Ultraviolet–Visible-Near-InfraRed Spectroscopy. An equitable photocatalyst functional mechanism has also been proposed on the basis of Tauc plot and scavenging experiments. The effect of influencing parameters has also been investigated and reported in terms of photonic efficiency. Since the entire study is carried out in direct sunlight, it inherently supports realizable solar energy applications in wastewater treatment.

Photocatalytic treatment of dye wastewater and parametric study using a novel Z-scheme Ag2CO3/SiC photocatalyst under natural sunlight

Journal

Journal NameJournal of Environmental Chemical Engineering

Title of PaperPhotocatalytic treatment of dye wastewater and parametric study using a novel Z-scheme Ag2CO3/SiC photocatalyst under natural sunlight

PublisherElsevier

Volume Number5

Page Number5556-5565

Published YearDecember 2017

ISSN/ISBN NoISSN 2213-3437

Indexed INScopus, Web of Science, UGC List

Visible/solar light active photocatalysts for organic effluent treatment: Fundamentals, mechanisms and parametric review

Journal

Journal NameRenewable and Sustainable Energy Reviews

Title of PaperVisible/solar light active photocatalysts for organic effluent treatment: Fundamentals, mechanisms and parametric review

PublisherElsevier

Volume Number76

Page Number1393–1421

Published YearSeptember 2017

ISSN/ISBN NoISSN 1364-0321

Indexed INScopus, Web of Science, UGC List

Validating experimental data for attenuation coefficients of developed polymer composites in shielding applications through Monte Carlo simulation

Journal

Journal NameInternational Journal of Chemical Reactor Engineering

Title of PaperValidating experimental data for attenuation coefficients of developed polymer composites in shielding applications through Monte Carlo simulation

PublisherDe Gruyter

Volume Number22

Page Number79-85

Published YearDecember 2023

ISSN/ISBN No1542-6580

Indexed INScopus, Web of Science

Abstract

The widespread use of composites in an ionizing environment raises durability concerns, particularly when performance over a longer period of time is required in a radiation environment. As a result, the goal of this study was to cure the material by lowering the number of free-charged carriers created in it after radiation exposure. Experiments were conducted to develop a radiation-hardened epoxy resin utilizing various compositions and to develop a radiation-hardened polymeric shielding material capable of being employed in a nuclear environment. To develop a radiation-hardened layer and, to some extent, raise the density of the material, suitable fillers are used. Polymer stabilizers are used alone or in combination to prevent a variety of consequences. The specimens were irradiated in order to determine the created material's shielding properties. The prepared composites' radiation absorption is investigated using an absorption coefficient. Experiments with an Am Be Neutron source were conducted to determine the linear absorption coefficient, and then Monte Carlo simulation was utilized to predict the absorption coefficient for created composites. To identify the relationships between the actual and virtual findings of the specimens, comparative research was conducted. The data are used to calculate the materials' linear absorption coefficients.

The extent of reaction traced by determination of N2 content for synthesised cationic biodegradable polymer flocculant

Journal

Journal NameVietnam Journal of Chemistry

Title of PaperThe extent of reaction traced by determination of N2 content for synthesised cationic biodegradable polymer flocculant

PublisherWiley Pubication

Volume Number61(4)

Page Number421-428

Published YearJune 2023

ISSN/ISBN No2572-8288

Indexed INScopus

Abstract

Biodegradable "green" and safe substitutes to minimize environmental and health risks are drawing extensive attention for research interest. The goal of this research is to create a water-soluble cationic starch grafted biodegradable polymer that can be used as a flocculant. Because polymers are strong molecules that carry charges, they are effective flocculants. Small particles can become stuck in polymer chains because they are so big & long, accumulating enough mass to inhibit their retention in solution. Saturated polymer chains also do not change the pH on adding to wastewater. The reactive groups of the starch, i.e. hydroxyls, form a complex with cations present in the reagent. Free radical sites may form on the polysaccharide backbone if the complex dissociates. According to the proposed strategy outlined in the research, the mechanism of free radical graft copolymerization of Ethyl monomers onto starch should proceed as expected. In presence of molecular Nitrogen, H+ may be replaced by reactive group R, i.e. CH2 CH2 N (Et3) in a highly alkaline medium. During the work, it was observed that starch-based flocculant exhibits a high degree of cationic charge. Developed cationic flocculant performs well in a liquid dispersion form. Also, is a fast-acting and effective flocculant, which is suitable for the treatment of industrial wastewater. It combines the low sludge formation properties of organic flocculants with the cost-effectiveness of inorganic flocculants. The paper will discuss important practical considerations to increase the %N2 by changing the reaction parameters of the polymer produced and its effect on flocculation efficiency.

Synthesis and validation of water soluble Cationic biodegradable starch as a flocculant

Journal

Journal NameResearch Journal of Chemistry and Environment

Title of PaperSynthesis and validation of water soluble Cationic biodegradable starch as a flocculant

PublisherWorld Researchers Association

Volume Number27

Page Number94-96

Published YearJanuary 2023

ISSN/ISBN No0972-0626

Indexed INScopus

Abstract

All efforts must be made to preserve water's purity for the present and the future because it is the environment's sustenance and is necessary for the existence of all living things, including humans, vegetation and animals. This project is an experiment to synthesize a flocculant for industrial effluent and, as a result, clean our environment. grafted starch-based biodegradable polymer is created to benefit from both natural and synthetic polymers. This research focused on creating water-soluble, cationic, biodegradable starch to use as a flocculant. The reactive groups of the starch, or hydroxyls, combine with the cations in the Reagent to produce a complex. The complex can separate, creating free radical sites on the polysaccharide backbone. According to the proposed scheme outlined in the paper, the mechanism of free radical graft copolymerization of ethyl monomers onto starch is anticipated in the presence of molecular Nitrogen, H+ may be replaced by Reactive group R, i.e. (CH2 CH3)3 N - (Et3)N in highly Alkaline medium. The effect of flocculant is validated on industrial effluent by jar test with various coagulation treatments. and the results are discussed.

Introduction to Wastewater

Book Chapter

Book NameAdvanced Materials and Technologies for Wastewater Treatment

PublisherCRC Press

Author NameM Saiyad

Page Number1-22

Chapter TitleIntroduction to Wastewater

Published YearSeptember 2021

ISSN/ISBN No978-0367686161

Indexed INScopus

Abstract

Water is essential for the survival of all living things and it is a lifeline of the environment, plants, animals, and humans. Anything must be done to maintain its quality for today and the future. Water covers about 71% of the earth's surface and is a valuable resource of the earth with many uses. Water distribution systems are crucial for supplying safe water. Water demands are growing due to increased consumption and scarcer resources. Supply of "quality water" in terms of the chemical, physical, and biological characteristics, usually to its suitability for a specific purpose is of great importance. In this chapter Characteristics of water, various pollutants affect the water quality, conventional & advanced water treatments, and challenges in this area are discussed. The importance of Circular economy and resource recovery is equally important in the context of today's scenario and is also discussed at a glance.

Lifetime estimation of epoxy based composite materials on irradiating with gamma radiation for shielding applications

Journal

Journal NamePoymer Testing

Title of PaperLifetime estimation of epoxy based composite materials on irradiating with gamma radiation for shielding applications

PublisherElsevier Ltd.

Volume Number93

Page Number106929

Published YearJanuary 2021

ISSN/ISBN No1429418

Indexed INScopus, Web of Science

Abstract

The extensive application of polymer composites in the ionizing environment leads to durability issues where performance for a long run under the radiation environment is related. For applications, such as space applications, in the radiation environment, it is expected to have about 20 to 30 years of durability. In the case of polymer composites, the reactive intermediates like free radicals present in the polymers are capable of initiating chemical reactions resulting in scission and cross-linking on irradiation. It may result in the failure of material under the application. The intention of the current work is to carry out decomposition studies to predict the stability of developed materials under ionizing radiation conditions. The lifetime of the composite samples is estimated by studying Decomposition Kinetics. The lifetime estimated for all developed samples is found around 20 to 45 years at 50 °C which is desired for a device under a nuclear environment. The lifetime estimation is discussed for epoxy based various composite materials prepared using different fillers and stabilizers. Samples are then irradiated with different doses of gamma radiation and compared with a pure epoxy resin sample using Decomposition Kinetics methods.

Study the effect of dispersion of filler in polymer composite for radiation shielding

Journal

Journal NamePolymer Composites

Title of PaperStudy the effect of dispersion of filler in polymer composite for radiation shielding

PublisherWiley Publication

Volume Number35

Page Number1263–1266

Published YearJuly 2014

ISSN/ISBN NoISSN:1548-0569

Indexed INScopus, Indian citation Index

Abstract

Good filler dispersion in a polymer resin is crucial for achieving performance. Main focus of this study is the effect of dispersion of various fillers in epoxy resin to produce radiation hardened plastic packaging which can be used as a shielding against a high frequency radiation attack. High-frequency rays have tendency to intrude in the resin and polymer especially are quite vulnerable to be penetrated by high-frequency rays which may create an early degradation of product. Hence, stabilizers are also used which can absorb the high-frequency radiation and save the material from early degradation. However, particular fillers are also required that can uniformly disperse in the resin and create a film which can provide extra protection against high-frequency radiation attack. Three types of compositions are prepared using epoxy/graphite, epoxy/lead, and epoxy/boron nitride nanopowder. Scanning Electron Microscope (SEM) images are used to study dispersion in resin. Small batches using gravity casting method at laboratory using compatibilizers are prepared to carry out experiments. Results of linear absorption coefficient carried out using Am–Be neutron source are also discussed in the paper.

The influence of stabilisers on resistance to gamma radiation for Epoxy based Polymeric composite material

Journal

Journal NameComposites Part B: Engineering

Title of PaperThe influence of stabilisers on resistance to gamma radiation for Epoxy based Polymeric composite material

PublisherElsevier Publication

Volume Number57

Page Number71–79

Published YearFebruary 2014

ISSN/ISBN NoISSN: 1359-8368

Indexed INScopus, Indian citation Index

Abstract

In certain applications plastic materials are getting irradiated while in end use. High energy irradiation leads to the auto-oxidation and degradation. The primary approach for stabilization against post irradiation degradation is to use appropriate stabilisers. In this research work, an experimental analysis of the effect of dose rate of gamma irradiation on epoxy resin based samples prepared by using combinations of primary and secondary stabilisers is presented. The chemistry, reaction mechanisms and morphology changes are studied and its effect on mechanical properties is observed. The results show an improvement of mechanical strength as dose increases, indicating cross-linking over oxidative degradation.

Polymer Flocculant

Book

PublisherLambart academic Publishing

Published YearNovember 2012

ISSN/ISBN No978-3-659-30650-1

Abstract

Water is the lifeblood of the environment, essential to the survival of all living things and everything must be done to maintain its quality for today and the future. Water quality is a characteristics of water, usually in respect to its suitability for a particular purpose. Acceptable values for each of these parameters depend on the use,not on the source of the water and hence the quality of the water determines its uses.Each designated use has a unique set of water quality requirements. Therefore water fit for one use may be unfit for another. Scientists are interested in specific aspects of water quality. From technical point of view,quality is determined by the kinds and amounts of substances dissolved and suspended in the water and what those substances do to inhabitants of the ecosystem. Years ago,in fact, all the way back to the beginning of the earth, nature was using natural polymers to make life possible.In this book it is discussed about development of a grafted starch based biodegradable polymer flocculant to gain both the advantage of natural as well as synthetic polymer, for the industrial waste water, which can make our environment clean.

The Integrative Approach of Learning Chemical Engineering Thermodynamics by Using Simulation-Based Exercises

Journal

Journal Name Education for Chemical Engineers

Title of PaperThe Integrative Approach of Learning Chemical Engineering Thermodynamics by Using Simulation-Based Exercises

PublisherElsevier

Published YearSeptember 2023

ISSN/ISBN No1749-7728

Indexed INScopus, EBSCO

Abstract

The active learning integrative approach of simulation-based exercises along with the core course would help undergraduate students with more engaged learning. The present study describes the simulation approach using an open-source process simulator with the help of three simulation-based exercises. The first one exemplifies the importance of the selection of an appropriate fluid package. The second exercise presented in the study shows the effect of using optimized and default values of binary interaction parameters on VLE prediction of alcohol-ester systems. The small interactive simulation-based problems with expected outcomes were presented in the third exercise which makes the learning more engaging and interesting. The current study highlights an integrative approach to inculcating critical thinking and self-learning abilities using small simulation-based exercises while learning chemical engineering thermodynamics. Finally, a survey with closed- and open-ended questions was used to gather the opinions of students on the presented exercises. A short communication is needed that sheds light on the integrative approach of learning process simulation complementing the thermodynamic theory learning.

Determining and modeling of density and viscosity of biodiesel-diesel and biodiesel-diesel-butanol blends

Journal

Journal NameInternational Journal of Chemical Reactor Engineering

Title of PaperDetermining and modeling of density and viscosity of biodiesel-diesel and biodiesel-diesel-butanol blends

PublisherDe Gruyter

Published YearJuly 2023

ISSN/ISBN No1542-6580

Indexed INScopus

Abstract

In the present work jatropha, palm, and karanja-based biodiesel and diesel blends, as well as biodiesel diesel and butanol blends, were studied. 112 density data for biodiesel-diesel blends in the temperature range of 30–65 °C were generated. 651 data for viscosity for these blends were generated in the temperature range of 25–65 °C. Blends with butanol were studied only at room temperature. The addition of butanol has not made much of a difference in the density or viscosity of the blends. Empirical models available in the literature were fitted to the data. The linear model in volume fraction and temperature was accurate for density. A generalized model was proposed representing the density for the biodiesel/diesel blend comprising all three biodiesels. A new empirical model for viscosity was also proposed in the study. The proposed model performed well compared to other models, with % an OARD of 3.74 %. A generalized model for viscosity was also proposed. The generalized models could estimate the density and viscosity with % OARD of 0.673  and 5.25 %, respectively.

Experimental measurement and empirical modeling of surface tension of ammonium and phosphonium salt-based DESs

Journal

Journal NameBrazilian Journal of Chemical Engineering

Title of PaperExperimental measurement and empirical modeling of surface tension of ammonium and phosphonium salt-based DESs

PublisherSpringer

Page Number1-16

Published YearJune 2023

ISSN/ISBN No0104-6632

Indexed INScopus, Web of Science

Abstract

Deep eutectic solvents (DESs) have been a field of intensive research globally due to their synthetic flexibility and environmentally benign nature. The use of DESs for large-scale industrial applications requires cognizance of their thermophysical properties. Surface tension is a fundamental property essential in design calculations of processes dealing with multiple immiscible interfaces. Herein, we report the 240 data points of experimental surface tension of 45 ammonium and phosphonium salt-based DESs within the temperature range of 298.15 to 343.15 K. Furthermore, a comparative study was carried out on three component-specific and five generalized empirical models. The models were modified, employed, evaluated, and recommended based on statistical assessment and estimation capability for DESs. Nearly 70% of datasets from the synthesized DESs were used to train the proposed model and the rest were used for training purposes. To validate the predictive capability of the proposed model, nearly 100 datapoints of DESs other than those synthesized were employed. The combination of the group contribution method and structural-property relation (GC-MCI) successfully estimated the surface tension of DESs. The overall absolute relative deviation (%OARD) of the component-specific simple linear model and the generalized GC-MCI model resulted in 0.112 and 4.10, respectively.

Simulation studies of n-heptane/toluene separation by extractive distillation using sulfolane, phenol, and NMP

Journal

Journal NameInternational Journal of Chemical Reactor Engineering

Title of PaperSimulation studies of n-heptane/toluene separation by extractive distillation using sulfolane, phenol, and NMP

PublisherDe Gruyter

Volume Number19

Page Number829-837

Published YearAugust 2021

ISSN/ISBN No1542-6580

Indexed INScopus

Abstract

Simulation studies of n-heptane/toluene system were performed using Aspen Plus. The comparative study of different entrainers: N-Methyl-2-Pyrrolidone (NMP), Phenol, and Sulfolane for separation of this system was done. Sensitivity analysis was carried out to optimize flowsheets. The criteria to determine the appropriate solvent for the said system included, the total cost calculated by the Aspen Process Economic Analyzer, amount of the solvent consumed, cost of the solvent, and purity obtained during the separation process. For the given system, sulfolane was found to be the appropriate solvent.

Study on empirical models of isobaric heat capacities and conductivities for ammonium salt-based DESs

Journal

Journal NameChemical Engineering Journal Advances

Title of PaperStudy on empirical models of isobaric heat capacities and conductivities for ammonium salt-based DESs

PublisherElsevier

Volume Number7

Page Number100132

Published YearAugust 2021

ISSN/ISBN No2666-8211

Indexed INScopus, Others

Abstract

In this research, a comparative evaluation of empirical models for the fundamental transport properties of DESs is presented. The detailed knowledge about the properties of DESs is critically important to rationally extend the utilization of DESs. The accurate information about these properties plays a vital role in transferring the laboratory scale applications to large industrial scale. In this regard, the ammonium salt-based 5 DESs were synthesized to study empirical models for conductivities within the temperature range of 298.15 to 323.15 K. The experimental isobaric heat capacity data of 17 ammonium salt-based DESs covering 326-data points with a temperature range of 293.15 to 353.15 K were collected from the open literature. Six models including group contribution – mass connectivity index (GC-MCI) and artificial neural network (ANN) were applied for modeling and predicting heat capacities. The GC-MCI and ANN showed good agreement with the experimental data. The error values of the GC-MCI model (R2 = 0.9863), and AAD = 2.25%) and ANN model (R2 = 0.9982 and AAD = 0.55%) were calculated. Three models were employed for studying conductivities of DESs. Results for conductivities show that the 4-parameters GH model gave low deviation (R2 = 0.9984 and AAD = 2.63%) compared to VFT (R2 = 0.9950 and AAD = 3.11%) and ARH (R2 = 0.9942 and AAD = 5.30%).

New generalization of cohesion factor model for polar compounds: Peng-robinson equation of state

Journal

Journal NamePhysical Chemistry Research

Title of PaperNew generalization of cohesion factor model for polar compounds: Peng-robinson equation of state

PublisherIranian Chemical Society

Volume Number8(2)

Page Number355-364

Published YearJune 2020

ISSN/ISBN No2322-5521

Indexed INScopus, Others

Abstract

Predicting physical properties is one of the major requirements in process engineering. Equations of state (EoS) are widely used for predicting physical properties. Among many EoS, cubic equations of state (cubic EoS) are being used because they are simple and applicable over a wide range of temperature and pressure. However, these cubic EoS fail to predict properties of a compound having polarity, association as well as hydrogen bonding. In the present study a new generalization for cohesion factor, to be used with Peng-Robinson (PR) EoS was proposed. In developing the model, compound-specific parameters for nearly 300 compounds were generated. These compound-specific parameters were correlated in terms of the reduced dipole moment and critical compressibility factor. Proposed models were compared with models available in the literature. Vapor pressure, heat of vaporization, saturated liquid density and second virial coefficient of the compounds were predicted. It was observed that the models with reduced dipole predicted various properties accurately for highly polar compounds without losing accuracy in predicting properties for non-polar compounds.

Methanol-Acetonitrile Separation By Extractive Distillation Using ILs

Conference

Title of PaperMethanol-Acetonitrile Separation By Extractive Distillation Using ILs

Author NameYashvi Sheth, M H Joshipura

OrganizationUniversity of Petroleum Engineering and Science

Year , VenueFebruary 2020 , UPES, Dehradn

Indexed INOthers

Abstract

Present paper includes the usage of Ionic Liquids as greener solvents in extractive distillation by substituting conventional solvents. For the separation of minimum boiling methanol-acetonitrile azeotropic system, extractive distillation was carried out in Aspen HYSYS process simulator by using ionic liquids as solvent. Three imidazolium based ionic liquids namely 1-butyl-3-methylimidazolim acetate ([BMIM][OAc]), 1-butyl-3-methylimidazolium chloride ([BMIM][Cl]), 1-butyl-3-methylimidazolium bromide ([BMIM][Br]) used, were added as hypothetical compound in Aspen HYSYS. Flowsheet was simulated using NRTL as the thermodynamic model, giving a purity of 99.9% by mol of methanol in distillate. Optimization of distillation process was done by varying flow rate of ionic liquid, column stages, feed stage location, ionic liquid stage location and reflux ratio. A Total Cost Analysis (TAC) was carried out by using Economic Analyzer in Aspen HYSYS to compare the optimized design. [BMIM][OAc] is found to most suitable according to the energy and cost analysis.

Separation of Ethanol Water System using Extractive Distillation Comparision of Three Entrainers

Conference

Title of PaperSeparation of Ethanol Water System using Extractive Distillation Comparision of Three Entrainers

Author NameTushar Perkar, Naitik Chokshi, and M H Joshipura

OrganizationUniversity of Petroleum Engineering and Science

Year , VenueFebruary 2020 , UPES, Dehradn

Indexed INOthers

Abstract

In the present paper, an intensive analysis of simulation of extractive distillation to separate the n-Heptane - Toluene azeotrope has been performed. A literature survey has been performed for extractive distillation. Aspen Plus was been used as the process simulator to simulate the process of extractive distillation (ED) for the n-Heptane-Toluene azeotropic system. Comparison of different entrainers: N-Methyl-2-Pyrrolidone (NMP), Phenol and Sulfolane for separation of this system was done. Sensitivity analysis was carried out to optimize every flowsheet. The total cost measured by the Aspen Process Economic Analyser, along with the amount of the solvent consumed, cost of the solvent and purity obtained during separation process are used as the criteria to determine the best solvent. For the n-Heptane - Toluene system, Sulfolane was found to be the best solvent.

A review on separation and purification techniques for biodiesel production with special emphasis on Jatropha oil as a feedstock

Journal

Journal NameAsia-Pacific Journal of Chemical Engineering

Title of PaperA review on separation and purification techniques for biodiesel production with special emphasis on Jatropha oil as a feedstock

PublisherCurtin University and John Wiley & Sons, Ltd.

Volume Number14(5)

Page Numbere2361

Published YearSeptember 2019

ISSN/ISBN No1932-2143

Indexed INScopus, Web of Science, Others

Abstract

Biodiesel is a promising alternative to conventional fuels. Research on biodiesel has vast experimental findings, but the outcomes are not always unidirectional. The sequence of unit operation for various transesterification processes is studied. The review work emphasizes on the separation and purification of Jatropha‐derived biodiesel. The study on the downstream processes of alcohol recovery, glycerol‐rich and biodiesel‐rich phase separation, and biodiesel purification techniques is the main part of this paper. The biodiesel purification includes wet and dry washing and membrane techniques. The purpose of the review is to find separation techniques that are less energy‐intensive and environmentally friendly purification processes for biodiesel production from Jatropha. The strategies to reduce the cost of biodiesel production from Jatropha are discussed. The Jatropha biodiesel possesses huge potential as one of the alternative energy sources for commercial exploitation in India.

Measurement and Correlation of Isobaric Vapor Liquid Equilibrium Data for Cyclopentyl Methyl Ether and Cyclopentanol

Journal

Journal NameJournal of Chemical and Engineering Data

Title of PaperMeasurement and Correlation of Isobaric Vapor Liquid Equilibrium Data for Cyclopentyl Methyl Ether and Cyclopentanol

PublisherACS

Volume Number64(2)

Page Number619-623

Published YearJanuary 2019

ISSN/ISBN No0021-9568

Indexed INScopus, Others

Abstract

Isobaric vapor–liquid equilibrium data for pure components cyclopentyl methyl ether (CPME) and cyclopentanol (CP) and their binary mixtures was generated using a modified ebulliometer. This data has been reported for five different pressures in the range of 71.50 to 101.79 kPa. Pure component boiling points were correlated using the Antoine equation and compared with the literature data. Binary vapor–liquid equilibrium data was modeled using Wilson, NRTL, and UNIQUAC models. Deviation plots for experimental and predicted temperatures are given. UNIQUAC and NRTL model predictions showed a better fit with the experimental values relative to the Wilson model.

Thermodynamic analysis and heat integration for hydrogen production from bio-butanol for SOFC application: Steam reforming vs. autothermal reforming

Journal

Journal NameEnergy Sources, Part A: Recovery, Utilization, and Environmental Effects

Title of PaperThermodynamic analysis and heat integration for hydrogen production from bio-butanol for SOFC application: Steam reforming vs. autothermal reforming

PublisherTaylor & Francis

Volume Number40

Page Number2590-2598

Published YearNovember 2018

Indexed INScopus, UGC List

Thermodynamic analysis and heat integration for hydrogen production from bio-butanol for SOFC application: Steam reforming vs. autothermal reforming

Journal

Journal NameEnergy Sources, Part A: Recovery, Utilization and Environmental Effects

Title of PaperThermodynamic analysis and heat integration for hydrogen production from bio-butanol for SOFC application: Steam reforming vs. autothermal reforming

PublisherTaylor and Francis

Volume Number40(21)

Page Number2590-2598

Published YearAugust 2018

ISSN/ISBN No1556-7036

Indexed INScopus, Others

Abstract

Thermodynamic analysis of hydrogen production by steam reforming and autothermal reforming of bio-butanol was investigated for solid oxide fuel cell applications. The effects of reformer operating conditions, e.g., reformer temperature, steam to carbon molar ratio, and oxygen to carbon molar ratio, were investigated with the objective to maximize hydrogen production and to reduce utility requirements of the process and based on which favorable conditions of reformer were proposed. Process flow diagram for steam reforming and autothermal reforming integrated with solid oxide fuel cell was developed. Heat integration with pinch analysis method was carried out for both the processes at favorable reformer conditions. Power generation, electrical efficiency, useful energy for co-generation application, and utility requirements for both the processes were compared.

Comparison of various methods for the estimation of vapor pressure of fatty acid methyl and ethyl esters (FAAE’s)

Journal

Journal NameFuel

Title of PaperComparison of various methods for the estimation of vapor pressure of fatty acid methyl and ethyl esters (FAAE’s)

PublisherElsevier

Volume Number182

Page Number842-849

Published YearJune 2016

Indexed INScopus, UGC List

Prediction of cold flow properties of Biodiesel

Journal

Journal NameNirma University Journal of Engineering & Technology

Title of PaperPrediction of cold flow properties of Biodiesel

Page Number1-4

Published YearJanuary 2016

Indexed INUGC List

New analytical expression for the prediction of vapour pressures of ionic liquids

Journal

Journal NameIndian Chemical Engineer

Title of PaperNew analytical expression for the prediction of vapour pressures of ionic liquids

PublisherTaylor & Francis

Volume Number57

Page Number154-163

Published YearApril 2015

Indexed INScopus, UGC List

Modeling vapor pressure of fatty acid and fatty acid methyl esters using cubic equations of state

Journal

Journal NameAsia Pacific Journal of Chemical Engineering

Title of PaperModeling vapor pressure of fatty acid and fatty acid methyl esters using cubic equations of state

PublisherJohn Willey & Sons

Volume Number10

Page Number170-177

Published YearJanuary 2015

Indexed INScopus, UGC List

Densities of six commercial ionic liquids: experiments and prediction using a cohesion based cubic equation of state

Journal

Journal NameJourna of Chemical and Engineering Data

Title of PaperDensities of six commercial ionic liquids: experiments and prediction using a cohesion based cubic equation of state

PublisherAmerical Chemical Society (ACS)

Volume Number59

Page Number571-578

Published YearFebruary 2014

ISSN/ISBN No0021-9568

Indexed INScopus, Web of Science, EBSCO

Modeling vapour pressure using compound specific cohesion factor relationship

Journal

Journal NameJournal of Taiwan Institute of Chemical Engineering

Title of PaperModeling vapour pressure using compound specific cohesion factor relationship

PublisherElsevier

Volume Number41

Page Number570-578

Published YearSeptember 2010

ISSN/ISBN No18761070

Indexed INScopus

Experimental studies on renewable hydrogen production by steam reforming of glycerol over zirconia promoted on Ni/Al2O3 catalyst

Journal

Journal NameInternational Journal of Chemical Reactor Engineering

Title of PaperExperimental studies on renewable hydrogen production by steam reforming of glycerol over zirconia promoted on Ni/Al2O3 catalyst

PublisherDegruyter

Volume Number22

Page Number87-95

Published YearJanuary 2024

ISSN/ISBN No1542-6580

Indexed INScopus, Web of Science

Abstract

The impact of ZrO 2 as a catalytic promoter for nickel-based alumina supported catalysts has been studied for the hydrogen synthesis via glycerol steam reforming. Hydrogen is a promising contender of clean fuel and has a key significance in the quest of an environment- preservation, low emission and more sustainable energy approach. Glycerol is a by-product produced during pro- duction of biodiesel by trans-esterification of vegetable oils. The higher hydrogen content in glycerol makes it the po- tential renewable feedstock for hydrogen production. Steam reforming process is the best method available which is highest in energy efficiency and most importantly most economical. The production of catalysts was based on the wet impregnation and co-precipitation methods. The ma- jority of the bulk and surface properties of different syn- thesized catalysts were considered and determined by several characterization techniques like X-ray diffraction technique, BET surface area and scanning electron micro- scopy. The performance of catalyst is based on glycerol conversion and hydrogen yield obtained from the steam reforming process taking place in the fixed bed catalytic reactor. The effect of different operating conditions like contact time, temperature, metal loading, and steam to glycerol ratio were investigated to produce maximum hydrogen and glycerol conversion. The results show that the incorporation of promoter 2 % ZrO 2 improved the activity of Ni/Al 2O 3 catalysts significantly resulting 96 % glycerol con- version, 84 % hydrogen production and greater stability at contact time = 15 kg cat s/mol, temperature = 800 °C, steam to glycerol ratio = 9:1 mol/mol, and pressure = 1 atm.

SUSTAINABLE HYDROGEN PRODUCTION VIA GLYCEROL STEAM REFORMING USING NI/CEO2/ZRO2/AL2O3 CATALYSTS

Journal

Journal NameMATERIALS TODAY: PROCEEDINGS

Title of PaperSUSTAINABLE HYDROGEN PRODUCTION VIA GLYCEROL STEAM REFORMING USING NI/CEO2/ZRO2/AL2O3 CATALYSTS

PublisherElsevier

Volume Number67

Page Number905-911

Published YearAugust 2022

ISSN/ISBN No2214-7853

Indexed INScopus

Abstract

The present study focuses on catalytic promoters to optimize parameters for hydrogen generation using glycerol, through the steam reforming process. Ceria and zirconia have been investigated and experimented with as promoters for the nickel catalysts over Al2O3. The catalysts, with different ceria and zirconia compositions, were prepared by co-precipitation and wet impregnation methods. Different techniques were employed for the characterization of synthesized catalysts, including XRD, SEM and FT-IR analysis. The performance of catalysts was evaluated in atmospheric gas–solid fixed-bed catalytic reactor. Different operating conditions were tested and evaluation of kinetics associated with reactions was carried out using the power-law model to analyse the performance of catalysts. Parameters and cause of catalyst deactivation were also investigated and process conditions were modified to avoid catalyst deactivation. Obtained results stated that catalyst with metal proportions as Ni/Ce/Zr/Al: 10/3/2/85 proved to be a suitable one with activation energy found to be 73.93 kJ/mole. Hydrogen selectivity and CO selectivity during water gas shift reaction were parameters upon which optimization of Ce/Zr ratio was experimentally obtained, to take advantage of zirconia due to its selectivity and ceria with its dispersion over nickel. Coke formation was found to be a major cause of catalyst deactivation and excess steam use was subjected to eliminate it.

TRASH GGBFS-BASED GEOPOLYMER AS A NOVEL SUNLIGHT-RESPONSIVE PHOTOCATALYST FOR DYE DISCOLOURATION

Journal

Journal NameJOURNAL OF THE INDIAN CHEMICAL SOCIETY

Title of PaperTRASH GGBFS-BASED GEOPOLYMER AS A NOVEL SUNLIGHT-RESPONSIVE PHOTOCATALYST FOR DYE DISCOLOURATION

PublisherElsevier

Volume Number99

Page Number1-8

Published YearJune 2022

ISSN/ISBN No0019-4522

Indexed INScopus

Abstract

In this study, we report a waste material-ground granulated blast furnace slag (GGBFS) as a low cost geopolymer, hybridised with ZnO to form a novel and efficient photocatalyst capable of discolouring textile wastewater. GGBFS is a waste material in an iron industry. Methylene blue was used as the probe dye and natural sunlight was used for activation of the photocatalyst. It was observed that under the experimental conditions, ZnGP-40 exhibited twice the discoloration efficiency than conventionally used ZnO or TiO2. This enhanced performance is majorly attributed to increased surface area of ZnO when strewn in the GGBFS matrix. The photocatalysts were characterized by SEM, TEM, PSA, TGA, BET and UV–Vis/NIR. The effect of photocatalyst loading, speed of agitation and solar insolation has also been studied. Since this study has been performed in direct sunlight, it exhibits a realizable application of solar energy in the treatment of wastewater.

Experiments on liquid film thickness around Taylor finger

Journal

Journal NameInternational Journal of Chemical Reactor Engineering

Title of PaperExperiments on liquid film thickness around Taylor finger

PublisherDe Gruyter

Volume Number20

Page Number1-8

Published YearFebruary 2022

ISSN/ISBN No1542-6580

Indexed INScopus, Web of Science

Abstract

Taylor finger is characterized by a single elongated air bubble that grows upward during the drainage of liquid from closed top vertical tubes. The characteristic of the Taylor finger is similar to the Taylor bubble commonly observed in gas–liquid two-phase flow. During the upward growth of the Taylor finger, liquid from the tube drains as a thin film around it. The exact prediction of film thickness is important in several engineering designs and process calculations such as the design of contacting devices, two-phase flow through porous media, boiling in tubes, and monolith reactors. The present study proposes an experimental technique to estimate the thickness of the draining liquid film. Based on experiments an empirical model has been proposed for non-dimensional film thickness in the inviscid region. The proposed model agrees well with the experimental data and equation proposed in published literatures (Davies, R. M., and G. Taylor. 1950. “The Mechanics of Large Bubbles Rising Through Extended Liquids and Through Liquids in Tubes.” Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 200, 375–90; Dukler, A. E., and J. Fabre. 1994. “Gas-Liquid Slug Flow.” Multiphase Science and Technology 8: 1–4; Fabre, J., and A. Liné. 1992. “Modeling of Two-Phase Slug Flow.” Annual Review of Fluid Mechanics 24: 21–46). Keywords: film thickness; liquid draining; Taylor finger; two-phase flow

ULTRAFINE TITANIUM-DIOXIDE (RUTILE) BASED NANO-CRYSTALLINE DISPERSIONS AS A PIGMENT FOR WATERBORNE COATINGS

Journal

Journal NamePROGRESS IN COLOR, COLORANTS AND COAITNGS

Title of PaperULTRAFINE TITANIUM-DIOXIDE (RUTILE) BASED NANO-CRYSTALLINE DISPERSIONS AS A PIGMENT FOR WATERBORNE COATINGS

PublisherInstitute for Color Science and Technology

Volume Number15

Page Number305-318

Published YearJanuary 2022

ISSN/ISBN No2008-2134

Indexed INScopus

Abstract

The present study involves a novel approach in manufacturing nano- crystalline dispersions of titanium dioxide, a widely used pigment in the paints and coatings market. These dispersions are developed to provide certain benefits over conventional titanium dioxide powder to improve the coating parameters such as adhesion promotion, hiding, tinting strength, dispersion, and reduced dosage. Dispersions are synthesized using bead mill and high-speed disperser in a unique multi-stage process, thereby developing a scalable technology for industrial synthesis. Characterization of these dispersions, namely XRD, particle size analysis, and FE-SEM, confirmed the presence of nano-crystalline titanium dioxide particles. Moreover, analysis of process variables was also conducted by studying the effect of grinding time on particle-size reduction. Rheological analysis was performed for water and styrene-acrylic copolymer emulsion systems. It was developed a dataset of viscosities. Results of this study can be assessed to create scalable technology for the synthesis of nano-crystalline dispersions, which can be used as a pigment in multipurpose waterborne coating systems. Prog. Color Colorants Coat. 15 (2022), 305-318© Institute for Color Science and Technology

PROCESS OPTIMIZATION & REACTIVE EXTRUSION OF HIGH-MOLECULAR WEIGHT POLY (BUTYLENE-ADIPATE-CO-TEREPHTHALATE) (PBAT) POLYMER FOR FILM BLOWING APPLICATION

Journal

Journal NameMATERIALS TODAY: PROCEEDINGS

Title of PaperPROCESS OPTIMIZATION & REACTIVE EXTRUSION OF HIGH-MOLECULAR WEIGHT POLY (BUTYLENE-ADIPATE-CO-TEREPHTHALATE) (PBAT) POLYMER FOR FILM BLOWING APPLICATION

PublisherElsevier

Volume Number67

Page Number221-228

Published YearJanuary 2022

ISSN/ISBN No2214-7853

Indexed INScopus

Abstract

The present study demonstrates a novel approach of the process optimization for the synthesis of Poly(butylene-adipate-co-terephthalate) polymer, and its exclusive reactive extrusion for the film blowing application. The polymers have been synthesized under different processing conditions in order to determine the effect of different variables on the kinetics and optimize the system to obtain biopolymers. The catalytic chemistry of tetra-isopropyl titanate (TIPT) and zinc acetate in the optimal dosage resulted in the development of very high molecular weight PBAT, which is very essential for a polymer to have superior mechanical properties. The polymers were characterized using gel permeation chromatography (GPC), FT-IR, and calorimetry (DSC) analysis to investigate their properties. Furthermore, the polymer compounding was conducted using a unique reactive extrusion process which resulted in the compound with physiochemical property retention at the reduced polymer dosage level. This novel extrusion process reduced the polymer consumption in the compounding by up to 25% with intact properties. Mechanical and thermal properties were enhanced using metal complex-based inorganic coupling agents and fluoropolymers during the process. In the blowing, a flexible and thin film of uniform thickness was obtained in the continual run on the machine. The films were tested for mechanical properties which were at par with commercially available bags. With the ever-increasing demand for environmental-friendly products in plastics & polymers and stricter regulations against the use against conventional plastics, these polymer-based bio-films can be extensively used in the packaging and plastic bag applications due to their biodegradability and the superior strength in terms of mechanical properties which are comparable to the one exhibited by conventional polyethylene bags.

SELECTIVE PRODUCTION OF HYDROGEN BY STEAM REFORMING OF GLYCERIN OVER ALUMINA-SUPPORTED NICKLE CATALYST

Journal

Journal Name INTERNATIONAL JOURNAL OF CHEM TECH RESEARCH(IJCTR)

Title of PaperSELECTIVE PRODUCTION OF HYDROGEN BY STEAM REFORMING OF GLYCERIN OVER ALUMINA-SUPPORTED NICKLE CATALYST

PublisherSphinx Knowledge House

Volume Number11

Page Number204-212

Published YearAugust 2018

ISSN/ISBN No2455-9555

Indexed INIndian citation Index, EBSCO

Abstract

The exhaust of fossil fuels with their ever increasing prices has paved ways for alternative fuels. Biodiesel is one of those alternative fuels which have picked up keen interest of the people due to its similar properties to diesel. However due to biodiesel being costlier than diesel in the present scenario, it has not been preferred to diesel. However if the cost of biodiesel is reduced then its effective usage can be made, either by blending with conventional diesel or by utilizing its by-product (glycerol) effectively. One way is to use glycerol to produce hydrogen. Hydrogen, being another source of renewable energy, is also seen as a clean fuel for transportation purpose. Hydrogen can be prepared through glycerol via various routes namely steam reforming, auto-thermal reforming, partial oxidation, etc. The paper focuses on the steam reforming process. This process is used widely used in the industries and it would not require much change in the system if the feedstock is changed to glycerol from naphtha or natural gas. However like every process this process also has some limitations which hinder the effective production of hydrogen. The paper discusses the experimental study of the reaction using Ni based catalysts and pure glycerol, the experimental work here focuses on the understanding of activity of Ni based catalysts, based on the different base metal loading under the one reaction condition. Keywords : Glycerol, Steam reforming, Hydrogen production, Biodiesel.

RENEWABLE HYDROGEN GENERATION VIA STEAM REFORMING OF GLYCEROL OVER MAGNESIUM BASED CATALYSTS

Journal

Journal NameINTERNATIONAL JOURNAL OF RESEARCH (IJR)

Title of PaperRENEWABLE HYDROGEN GENERATION VIA STEAM REFORMING OF GLYCEROL OVER MAGNESIUM BASED CATALYSTS

PublisherEdupedia Publications Pvt Ltd

Volume Number4

Page Number952-956

Published YearOctober 2017

ISSN/ISBN No2348-6848

Indexed INOthers

CLEAN ENERGY HYDROGEN PRODUCTION BY STEAM REFORMING OF BIODIESEL BY PRODUCT USING NICKEL BASED CATALYST WITH DIFFERENT SUPPORTS

Journal

Journal NameINTERNATIONAL JOURNAL OF CHEM TECH RESEARCH(IJCTR)

Title of PaperCLEAN ENERGY HYDROGEN PRODUCTION BY STEAM REFORMING OF BIODIESEL BY PRODUCT USING NICKEL BASED CATALYST WITH DIFFERENT SUPPORTS

PublisherSphinx Knowledge House

Volume Number13

Page Number962-965

Published YearOctober 2017

ISSN/ISBN No2348-6848

Indexed INOthers

HYDROGEN PRODUCTION FORM GLYCEROL: A REVIEW

Journal

Journal NameINTERNATIONAL JOURNAL OF CHEM TECH RESEARCH(IJCTR)

Title of PaperHYDROGEN PRODUCTION FORM GLYCEROL: A REVIEW

PublisherSphinx Knowledge House

Volume Number10

Page Number1067-1078

Published YearJuly 2017

ISSN/ISBN No2455-9555

Indexed INIndian citation Index, EBSCO

Abstract

The development of alternative sources of energy is becoming important in this era of diminishing petroleum reserves and increased environmental awareness. Hydrogen production from biomass has attracted great interest because of the potential application in fuel cells. Significant amount of glycerol is produced as a by-product during bio-diesel production by transesterification of vegetable oils, which are available at low cost in large supply from renewable raw materials. With increased production of biodiesel, a glut of glycerol (C3H8O3) is expected in the world market, and therefore it is essential to find useful applications for glycerol. Finding alternative uses for glycerol is important. Using glycerol as a source of producing hydrogen is a good possibility. Steam reforming is a promising way to utilize the diluted glycerol aqueous solution to produce hydrogen. Glycerin is a potential feed stock than ethanol for hydrogen production because one mole of glycerin can produce up to four moles of hydrogen. An attempt is made to identify new catalyst with high selectivity towards hydrogen and sufficient reaction rate at mild conditions. The catalysts used in other processes are studied and their effects on temperature, contact time, and water to glycerol ratio, metal loading on hydrogen yield are investigated. Other considerations such as catalyst activity, catalyst lifetime and operating conditions are estimated for over all process economics. Thus, the paper covers the selection of process and catalyst, process parameters, catalyst properties and economics related to it. Keywords : Hydrogen production, biomass, transesterification, steam reforming, catalyst activity, catalyst properties, economics.

HYDROGEN PRODUCTION BY STEAM REFORMING OF GLYCEROL USING MAGNESIUM PROMOTED NICKLE, COBALT- ALUMINA CATALYSTS

Journal

Journal NameINTERNATIONAL JOURNAL OF ENGINEERING AND TECHNOLOGY (IJET)

Title of PaperHYDROGEN PRODUCTION BY STEAM REFORMING OF GLYCEROL USING MAGNESIUM PROMOTED NICKLE, COBALT- ALUMINA CATALYSTS

PublisherEngg Journals Publications

Volume Number9

Page Number2442-2447

Published YearJanuary 2017

ISSN/ISBN No0975-4024

Indexed INOthers

Abstract

The depleting fossil fuels with their ever increasing prices have paved ways for alternative fuels. Use of biodiesel and its production are expected to grow steadily in future. With the increase in production of biodiesel, there would be a glut of glycerol in the world market. Glycerol is a potential feed stock for hydrogen production because one mole of glycerol on steam reforming produces 7 moles of hydrogen. Production of hydrogen from glycerol is environmentally friendly because it adds value to glycerol generated from biodiesel plants. The study focuses on comparison on Cobalt Catalyst and Nickel based catalysts modified with Mg on Alumina support. The catalysts were prepared by the incipient wetness technique. The experiments were carried out using lab scale catalytic reactor and the gas products generated are analyzed in GC. The paper discusses the effect of the catalysts on hydrogen selectivity and Conversion and glycerol conversion ranging from 700ºC to 900ºC. The effect of glycerol to water ratio, metal loading, temperature and feed flow rate was analyzed. It was found that with the increase in the water to glycerol molar ratio, feed flow rates around 1 ml/min, at 850ºC maximum hydrogen was produced. The results show that glycerol steam reforming is a viable alternative use of glycerol to produce hydrogen. A Theory regarding Kinetic Study and Characterisation of Liquid samples has been studied.

CHALLENGES IN THE PRODUCTION OF HYDROGEN FROM GLYCEROL- A BIODIESEL BY PRODUCT VIA STEAM REFORMING PROCESS

Journal

Journal NamePROCEDIA ENGINEERING

Title of PaperCHALLENGES IN THE PRODUCTION OF HYDROGEN FROM GLYCEROL- A BIODIESEL BY PRODUCT VIA STEAM REFORMING PROCESS

PublisherElsevier

Volume Number51

Page Number423-429

Published YearDecember 2012

ISSN/ISBN No1877-7058

Indexed INScopus

Abstract

The depleting fossil fuels with their ever increasing prices have paved ways for alternative fuels. Biodiesel is one of those alternative fuels which have picked up keen interest of the people due to its similar properties to diesel. However due to biodiesel being costlier than diesel in the present scenario, it has not been preferred to diesel. However if the cost of biodiesel is reduced then its effective usage can be made, either by blending with conventional diesel or by utilizing its byproduct (glycerol) effectively. One way is to use glycerol to produce hydrogen. Hydrogen, being another source of renewable energy, is also seen as a clean fuel for transportation purpose. Hydrogen can be prepared through glycerol via various routes namely steam reforming, auto-thermal reforming, partial oxidation, etc. The paper here focuses on the steam reforming process. This process is used widely used in the industries and it would not require much change in the system if the feedstock is changed to glycerol from naphtha or natural gas. However like every process this process also has some limitations which hinder the effective production of hydrogen. The paper throws light on these challenges, along with few possible solutions which can be used in order to avoid or eliminate these challenges and help in efficient production of hydrogen.

Clean Energy Technologies with Special Emphasis on Hydrogen Production Using Solar Technology

Book Chapter

Book NameBiomass-based Clean Technologies for Sustainable Development

PublisherSpringer Nature

Author NameNeha Patni

Page Number113-134

Chapter TitleClean Energy Technologies with Special Emphasis on Hydrogen Production Using Solar Technology

Published YearApril 2024

ISSN/ISBN No978-981-97-0846-8

Indexed INScopus

Efficient dye-sensitized solar cell fabricated using a less toxic alternative to electrolyte and charge collector

Journal

Journal NameEnvironmental Science Pollution Research

Title of PaperEfficient dye-sensitized solar cell fabricated using a less toxic alternative to electrolyte and charge collector

PublisherElseveir

Volume Number29

Page Number75955–75965

Published YearOctober 2022

Indexed INScopus

Investigation of structural, optical, magnetic, and dielectric properties of calcium hexaferrite synthesized in presence of Azadirachta indica and Murraya koenigii leaves extract

Journal

Journal NameCeramics International

Title of PaperInvestigation of structural, optical, magnetic, and dielectric properties of calcium hexaferrite synthesized in presence of Azadirachta indica and Murraya koenigii leaves extract

PublisherScience direct

Volume Number48

Page Number20134-20145

Published YearJuly 2022

ISSN/ISBN No0272-8842

Indexed INScopus

Cellulose Nanoparticles: Fundamentals

Book Chapter

Book Name Cellulose Nanoparticles: Volume 1: Chemistry and Fundamentals

PublisherRoyal Society of Chemistry

Author NameNeha Patni

Chapter TitleCellulose Nanoparticles: Fundamentals

Published YearJuly 2021

ISSN/ISBN No 978-1-78801-793-0

Indexed INScopus

Effect of using betalain, anthocyanin and chlorophyll dyes together as a sensitizer on enhancing the efficiency of dye-sensitized solar cell

Journal

Journal NameInternational Journal of Energy Research

Title of PaperEffect of using betalain, anthocyanin and chlorophyll dyes together as a sensitizer on enhancing the efficiency of dye-sensitized solar cell

PublisherWiley

Volume Number1

Page Number1-14

Published YearAugust 2020

ISSN/ISBN No1099-114X

Indexed INScopus, Web of Science

Optimization of the doping of polyaniline via response surface method to prepare polymer electrolytes for dye sensitized solar cells

Journal

Journal NameJournal of Environmental Chemical Engineering

Title of PaperOptimization of the doping of polyaniline via response surface method to prepare polymer electrolytes for dye sensitized solar cells

PublisherElseveir

Volume Number8

Published YearApril 2020

ISSN/ISBN NoISSN: 2213-3437

Indexed INScopus, Web of Science

Automation of Process Evaluation of Saccharification of Wheat Starch Followed by Fermentation of Glucose to Prepare Bioethanol Using Digital Image Processing.

Book Chapter

Book NameSmart Innovation, Systems and Technologies

PublisherSpringer

Author NameSatapathy S., Joshi A.

Page Number11-19

Chapter TitleAutomation of Process Evaluation of Saccharification of Wheat Starch Followed by Fermentation of Glucose to Prepare Bioethanol Using Digital Image Processing.

Published YearDecember 2018

ISSN/ISBN NoISBN 978-981-13-1747-7

Indexed INScopus

Cost effective approach of using substrates for electrodes of enhanced efficient dye sensitized solar cell

Journal

Journal NameMaterial Research Express

Title of PaperCost effective approach of using substrates for electrodes of enhanced efficient dye sensitized solar cell

PublisherIoP publishing

Volume Number5

Page Number1-11

Published YearOctober 2018

ISSN/ISBN No2053-1591

Indexed INScopus, Web of Science, Indian citation Index, EBSCO

Newer approach of using alternatives to (Indium doped) metal electrodes, dyes and electrolytes in dye sensitized solar cell

Journal

Journal NameMaterial Research Express

Title of PaperNewer approach of using alternatives to (Indium doped) metal electrodes, dyes and electrolytes in dye sensitized solar cell

PublisherIoP publishing

Volume Number5

Page Number1-9

Published YearApril 2018

ISSN/ISBN No2053-1591

Indexed INScopus, Web of Science, Indian citation Index, EBSCO, UGC List

Polyaniline based sensors for monitoring and detection of ammonia and carbon monoxide gases

Book Chapter

Book NameTrends and Applications in Advanced Polymeric Materials

PublisherScrivener Publishing LLC (Wiley)

Author NameSanjay K. Nayak, Smita Mohanty, Lakshmi Unnikrishnan

Page Number145-162

Chapter TitlePolyaniline based sensors for monitoring and detection of ammonia and carbon monoxide gases

Published YearOctober 2017

ISSN/ISBN NoISBN: 978-1-119-36363-7

Indexed INScopus

Polymer based organic solar cell: an overview

Book Chapter

Book NameTrends and Applications in Advanced Polymeric Materials

PublisherScrivener Publishing LLC (Wiley)

Author NameSanjay K. Nayak, Smita Mohanty, Lakshmi Unnikrishnan

Page Number59-82

Chapter TitlePolymer based organic solar cell: an overview

Published YearOctober 2017

ISSN/ISBN NoISBN: 978-1-119-36363-7

Indexed INScopus

Microbial polyesters: Production and Market

Book Chapter

Book NameHandbook of Composites from Renewable Materials, Volume 5, Biodegradable Materials

PublisherScrivener Publishing LLC (Wiley)

Author NameVijay Kumar Thakur, Manju Kumari Thakur, Michael R. Kessler

Page Number95-108

Chapter TitleMicrobial polyesters: Production and Market

Published YearMarch 2017

ISSN/ISBN NoISBN: 978-1-119-22379-5

Indexed INScopus

Use of Polyaniline as an indicator to acid base titration

Conference

Title of PaperUse of Polyaniline as an indicator to acid base titration

Proceeding NameInternational Journal of Research and Scientific Innovation - IJRSI

Page Number265-267

Published YearDecember 2015

ISSN/ISBN No2321-2705

Biodegradable Polymers: Definition, Classification and Application as an alternative to Plastic

Book Chapter

Book NameHandbook of Sustainable Polymers, Processing and Applications

PublisherPan Stanford Publishing Pte. Ltd. (CRC Press)

Author NameVijay Kumar Thakur, Manju Kumari Thakur

Page Number181-213

Chapter TitleBiodegradable Polymers: Definition, Classification and Application as an alternative to Plastic

Published YearOctober 2015

ISSN/ISBN NoISBN:- 978-981-4613-53-8

Polymer Based Organic Solar Cells

Conference

Title of PaperPolymer Based Organic Solar Cells

Proceeding NameInternational Journal of Research and Scientific Innovation

Page Number179-182

Published YearNovember 2014

ISSN/ISBN No2321-2705

An overview on the role of wheat gluten as a viable substitute for biodegradable plastics

Journal

Journal NameReviews in Chemical Engineering

Title of PaperAn overview on the role of wheat gluten as a viable substitute for biodegradable plastics

Volume Number30

Page Number421-430

Published YearAugust 2014

ISSN/ISBN No2191-0235

Indexed INScopus, Web of Science, UGC List

Wheat as a Promising Substitute of Corn for Bioethanol Production

Conference

Title of PaperWheat as a Promising Substitute of Corn for Bioethanol Production

Proceeding NameProcedia Engineering

PublisherElseveir

Page Number355-362

Published YearDecember 2012

ISSN/ISBN No1877-7058

Indexed INScopus

BioDiesel and Ethanol:Environmentally Viable Alternates to Conventional fuel

Book

PublisherVDM Verlag Dr.Muller, Germany

Published YearMay 2010

ISSN/ISBN NoISBN :- 978-3-639-25706-9

A comparative review of biodegradable and conventional plastic packaging

Journal

Journal NameInteractions

Title of PaperA comparative review of biodegradable and conventional plastic packaging

PublisherSpringer Nature

Volume Number245

Page Number1-26

Published YearJuly 2024

ISSN/ISBN No3005-0731

Indexed INScopus

Abstract

With growing environmental concerns, the shift from conventional to biodegradable plastic packaging has gained significant momentum. This review paper comprehensively explores the environmental impacts, material properties, manufacturing techniques, and applications of both conventional and biodegradable plastic packaging. Highlighting key case studies, it showcases successful implementations of biodegradable packaging and the lessons learned. The paper also delves into future perspectives, discussing technological advancements and policy recommendations to promote the widespread adoption of biode gradable materials. The goal is to provide a balanced view to aid industry stakeholders and policymakers in making informed decisions for sustainable packaging solutions.

Preparation and application of Ag–Ce–O composite metal oxide catalyst in catalytic ozonation for elimination of Reactive Black 5 dye from aqueous media

Journal

Journal NameWater Science and Engineering

Title of PaperPreparation and application of Ag–Ce–O composite metal oxide catalyst in catalytic ozonation for elimination of Reactive Black 5 dye from aqueous media

PublisherElsevier

Published YearSeptember 2023

ISSN/ISBN No2405-8106

Indexed INScopus

Abstract

It is necessary to treat textile effluents before discharging them into natural water bodies as they harm the environment. Compared to conventional treatment methods, catalytic ozonation has gained attention due to its effectiveness in removing refractory organic pollutants. In this study, the coprecipitation method was used to synthesize a composite metal oxide of silver and cerium oxide, and the synthesized catalyst was used to eliminate the Reactive Black 5 (RB5) dye. X-ray diffraction, scanning electron microscopic, and Brunauer–Emmett–Teller surface area analyses were performed to characterize the synthesized catalyst. Afterwards, relevant experimental parameters, such as pH, ozone and catalyst dosages, and initial dye concentration, were investigated. The experiments revealed that the optimal experimental conditions were a pH value of 10, a catalyst dosage of 0.7 g/L, and an ozone dosage of 60 L/h. In these optimized conditions, the RB5 dye was entirely removed, and a chemical oxygen demand removal efficiency of 88% was achieved within a reaction time of 80 min. Furthermore, the recycling potential of the catalyst was tested for three cycles, and no deterioration in its activity was observed. Additionally, studies were conducted using a hydroxyl radical scavenger in order to understand the reaction pathway of the system. As a result, the indirect pathway was more dominant than the direct pathway in the system.

Effect of Operating Parameters on O3, O3/UV, O3/UV/PS Process Using Bubble Column Reactor for Degradation of Reactive Dyes

Journal

Journal NameJournal of The Institution of Engineers (India): Series A

Title of PaperEffect of Operating Parameters on O3, O3/UV, O3/UV/PS Process Using Bubble Column Reactor for Degradation of Reactive Dyes

PublisherSpringer Nature

Volume Number104

Page Number565-578

Published YearMay 2023

ISSN/ISBN No2250-2157

Indexed INScopus

Abstract

Reactive dyes are widely consumed in the textile industrial sector due to their excellent properties, bright color, excellent color fastness, and ease of application; nevertheless, they are challenging to treat using existing conventional treatment methods due to their refractory and hazardous nature. In the present work, simulated reactive dye wastewater degradation was experimented with using Ozonation, O3/UV, and O3/UV/PS process. The experiments were carried out in a 3 L reactor for two different reactive dyes: reactive red 120 (RR120) and reactive yellow 145 (RY145), with their initial concentration ranges from 500 to 1500 mgL−1. The present study concludes that simple ozonation resulted in only 49% TOC removal, while O3/UV processes removed 57% TOC after 90 min of treatment. The highest efficiency was achieved in a coupled O3/UV/PS process with TOC removal of 88% at 66 W UV intensity, 1:40 TOC:PS ratio, 1.86 gh−1 ozone dose, and alkaline pH. It was also observed that the TOC removal was higher in RR120 compared to RY145. Finally, electrical energy per order was evaluated for the various ozone-based AOPs, and O3/UV/PS provided the best results with % TOC removal.

A brief overview on advances in water treatment process

Book Chapter

Book Name3D Printing Technology for Water Treatment Applications

PublisherElsevier

Author NameAmit Kumar, Leena V. Bora, Nikita P. Chokshi, Gajendra Kenil, and Mansuri Zaid

Page Number107-131

Chapter TitleA brief overview on advances in water treatment process

Published YearOctober 2022

ISSN/ISBN No978-0-323-99861-1

Indexed INScopus

Comparative studies for the degradation of Reactive Black 5 dye employing ozone-based AOPs

Journal

Journal NameNanotechnology for Environmental Engineering

Title of PaperComparative studies for the degradation of Reactive Black 5 dye employing ozone-based AOPs

PublisherSpringer Nature

Volume Number7

Page Number745-752

Published YearNovember 2021

Indexed INScopus

Abstract

Advanced oxidation processes (AOPs) gain attention for wastewater treatment due to the formation of hydroxyl radicals, which have more oxidation potential. Among all AOPs, few O3, O3/UV, O3/UV/persulfate (PS), and O3/catalyst processes were studied to degrade RB5 dye wastewater. Furthermore, the effect of various experimental parameters like ozone flowrate (30–60 LPH), initial pH (2–12), initial dye concentration (100–1000 mg/L), UV intensity (11–66 W), persulfate dosage, and catalyst dosage (0.5–1.2 g/L) was studied for degradation of RB5. Furthermore, the prepared catalyst was characterized by X-ray diffraction, scanning electron microscopy, energy-dispersive spectroscopy, and BET surface area. Based on the results obtained in the study, the maximum TOC removal efficiency was 96% achieved with optimum operating parameters, 60 LPH of ozone flowrate, 7 pH, 100 mg/L RB5 concentration, and 1 g/L catalyst dosage in 80 min of reaction time using O3/catalyst process, while in O3/UV/PS process, the total organic carbon (TOC) removal efficiency was 90% with optimum operating parameters, 60 LPH of ozone flowrate, 12 pH, 100 mg/L RB5 concentration, UV intensity 66 W, and TOC/PS ratio 1:40 in 80 min of reaction time. Finally, it can be seen that ozone-based AOPs offered an effective solution for the degradation of recalcitrant pollutants, especially RB5.

Synthesis of Nano Ag-La-Co Composite Metal Oxide for Degradation of RB 5 Dye Using Catalytic Ozonation Process

Journal

Journal NameOzone Science and Engineering

Title of PaperSynthesis of Nano Ag-La-Co Composite Metal Oxide for Degradation of RB 5 Dye Using Catalytic Ozonation Process

PublisherSpringer

Volume Number44

Page Number182-195

Published YearApril 2021

ISSN/ISBN No01919512

Indexed INScopus

Abstract

Nanoscale composite metal oxide of Ag-La-Co was prepared by co-precipitation method for the treatment of Reactive Black 5 using catalytic ozonation process. Further, the catalyst was characterized by transmission electron microscope, X-ray powder diffraction (XRD), scanning electron microscope - energy dispersive X-ray (SEM-EDX) and Brunauer–Emmett–Teller (BET) surface area analyzer for clarity of the phenomenon. The factors such as amount of catalyst (0.2–1.2 g/L), solution pH (2, 7, and 12), initial dye concentration (100–1,000 mg/L), and ozone flow rate (30–60 LPH) were found to influence the process. The characterization results confirm the formation of the composite metal oxide of Ag-La-Co. The degradation efficiency of catalytic ozonation was 63% compared to 32% and 4% in ozonation without catalyst and adsorption on the catalyst, respectively. Furthermore, it was observed that a pseudo-first-order kinetics model fits well with the experimental data. In addition, the effect of tert-butyl alcohol, a hydroxyl radical scavenger, has been studied. Lastly, the repetitive use of the synthesized catalyst showed that even after three consecutive runs, the catalytic activity is not much degraded, and therefore, the degradation efficiency of the synthesized catalyst was comparatively high; about 95% of Total Organic Carbon (TOC) removal was achieved at solution pH 7, amount of catalyst 1 g/L, reaction time 80 min, and ozone flow rate 30 LPH, indicating an economically viable option for industrial wastewater treatment.

Catalytic Ozonation of Reactive Black 5 Over Silver–Cobalt Composite Oxide Catalyst

Journal

Journal NameJournal of The Institution of Engineers (India): Series A

Title of PaperCatalytic Ozonation of Reactive Black 5 Over Silver–Cobalt Composite Oxide Catalyst

PublisherSpringer India

Volume Number101

Page Number433-443

Published YearJuly 2020

ISSN/ISBN No2250-2157

Indexed INScopus

Abstract

Catalytic ozonation was carried out using the silver–cobalt composite catalyst. Co-precipitation method was followed for the preparation of the catalyst, and characterization of the catalyst was carried out by XRD, BET and SEM with EDX. The percentage of total organic carbon removal was 75% employing silver–cobalt composite catalyst with ozonation, against 34% employing ozonation without any catalyst. The parameters such as amount of catalyst, initial concentration of the dye, ozone flow rate and the solution pH were found to affect the catalytic ozonation process. Degradation mechanism identified employing hydroxyl radical scavenger. The cyclic use of the synthesized catalyst indicated that the catalytic activity of Ag–Co–O is not much deteriorated after three cycles. Further, the kinetic suggests pseudo-first-order kinetics for the process.

Catalytic ozonation of Reactive Black 5 in aqueous solution over a La-Co-O catalyst

Journal

Journal NameJournal of Indian Chemical Society

Title of PaperCatalytic ozonation of Reactive Black 5 in aqueous solution over a La-Co-O catalyst

PublisherScientific Publishers

Volume Number97

Page Number373-378

Published YearMarch 2020

ISSN/ISBN No0019-4522

Indexed INScopus

Abstract

An attempt has been made in this research for degradation of Reactive Black 5 (RB5) employing catalytic ozonation over the composite catalyst of lanthanum oxide and cobalt oxide (La-Co-O). The catalyst was prepared by co-precipitation method. Synthesized catalyst was characterized by XRD, SEM and BET techniques. The efficiency of catalytic ozonation was compared with ozonation and with adsorption alone. The COD removal efficiency using the La-Co-O catalyst was 68% which is higher than the single ozonation process. The different parameters like the effect of catalyst dose, initial dye concentration, and initial pH of the solution were studied. It was concluded that the degradation efficiency for RB5 was improved by almost three fold in the presence of the catalyst compared to only ozonation.

Co3O4/γ-Al2O3 as a Heterogeneous Catalyst for Ozonation of Dye Wastewater

Conference

Title of PaperCo3O4/γ-Al2O3 as a Heterogeneous Catalyst for Ozonation of Dye Wastewater

Author NameNikita P. Chokshi, Meet Kundariya, Jay Patel, J. P. Ruparelia

OrganizationInstitute of Technology, Nirma University

Year , VenueNovember 2019 , IT, NU

Abstract

: Water is a precious resource but due to the increased population and industrialization, the amount of water used for various purposes like drinking, sanitization and industrial use has also increased. The industrial wastewater is many a times coloured due to the type of impurities present in it. The wastewater from the dye industries is generally coloured and before discharging it to the water bodies, it must be treated. Ozonation – an Advanced Ox-idation Process (AOP) – is employed for the colour removal treatment of the wastewater. To improve the colour removal rate from the wastewater, catalysts are used during ozona-tion. The paper discusses about the preparation of cobalt oxide catalyst supported on γ-Al2O3 by the impregnation method for catalyzing the ozonation reaction. The catalyst was characterized by BET, XRD, SEM and EDX techniques. Also the parameters like effect of pH, initial dye concentration, ozone flow rate and the amount of catalyst were discussed. It was found that the synthesized catalyst work satisfactorily for color removal of RB5.

Packing media for Anaerobic fixed film reactor-A review

Journal

Journal NameJournal of Environmental Science and Engineering

Title of PaperPacking media for Anaerobic fixed film reactor-A review

PublisherNEERI-NAGPUR

Volume Number57

Page Number263-270

Published YearJuly 2015

Indexed INa:3:{i:0;s:6:"Scopus";i:1;s:5:"EBSCO";i:2;s:8:"UGC List";}

The extent of reaction traced by determination of N2 content for synthesised cationic biodegradable polymer flocculant

Journal

Journal NameVietnam Journal of Chemistry

Title of PaperThe extent of reaction traced by determination of N2 content for synthesised cationic biodegradable polymer flocculant

PublisherWILEY‐VCH Verlag GmbH & Co. KGaA

Volume Number61

Page Number421-428

Published YearAugust 2023

Indexed INScopus

Azeotropic dehydrative (solution) polycondensation of lactic acid to polylactic acid (PLA): A in-depth review of an overlooked method for manufacturing PLA

Journal

Journal NamePolymer-Plastics Technology and Materials

Title of PaperAzeotropic dehydrative (solution) polycondensation of lactic acid to polylactic acid (PLA): A in-depth review of an overlooked method for manufacturing PLA

PublisherTaylor & Francis

Volume Number62

Page Number1394-1402

Published YearJuly 2023

Indexed INScopus, PubMed, Web of Science, ABDC, Indian citation Index, Hein Database, EBSCO

Polymers for 3D printing in biomedical engineering applications

Journal

Journal NameJournal of Pharmaceutical Negative Results

Title of PaperPolymers for 3D printing in biomedical engineering applications

Page Number1870-1880

Published YearOctober 2022

Indexed INScopus

Nanopolymers in drug delivery system

Journal

Journal NameMaterials Today: Proceedings

Title of PaperNanopolymers in drug delivery system

PublisherElsevier

Volume Number67

Page Number25-30

Published YearJanuary 2022

Indexed INScopus

Processes for the Treatment of Industrial Wastewater

Book Chapter

Book NameAdvanced Materials and Technologies for Wastewater Treatment

PublisherCRC Press

Author NameNimish Shah, Ankur H Dwivedi, Shibu G Pillai

Page Number285-316

Chapter TitleProcesses for the Treatment of Industrial Wastewater

Published YearSeptember 2021

Indexed INScopus

Wonder of Chemistry: Ionic Liquids

Journal

Journal NameAnnals of the Romanian Society for Cell Biology

Title of PaperWonder of Chemistry: Ionic Liquids

Volume Number25

Page Number3215-3220

Published YearMay 2021

Indexed INScopus

Crosslinking of starch and its effect on viscosity behaviour

Journal

Journal NameReviews in Chemical Engineering (RevChemEng).

Title of PaperCrosslinking of starch and its effect on viscosity behaviour

PublisherDe Gruyter Publication House

Volume Number2016; 32(2):

Page Number265–270

Published YearFebruary 2016

ISSN/ISBN NoISSN: 0167-8299 (Print), 2191-0235 (Online)

Indexed INScopus, PubMed, Web of Science, ABDC, Indian citation Index, Hein Database, EBSCO, UGC List

Chitosan: Development of Nanoparticles, Other Physical Forms and Solubility with Acids

Journal

Journal NameJournal of Nano Research

Title of PaperChitosan: Development of Nanoparticles, Other Physical Forms and Solubility with Acids

PublisherTrans Tech Publications, Switzerland

Volume NumberVol. 24 (2013)

Page Number pp 107-122

Published YearApril 2013

ISSN/ISBN NoISSN: 1661 – 9897; 1662 – 5250(offline)

Indexed INScopus, PubMed, Web of Science, ABDC, Indian citation Index, Hein Database, EBSCO, UGC List

Preparation and application of Ag–Ce–O composite metal oxide catalyst in catalytic ozonation for elimination of Reactive Black 5 dye from aqueous media

Journal

Journal Name Water Science and Engineering

Title of PaperPreparation and application of Ag–Ce–O composite metal oxide catalyst in catalytic ozonation for elimination of Reactive Black 5 dye from aqueous media

PublisherScience direct

Published YearSeptember 2023

ISSN/ISBN No2405-8106, 1674-2370

Indexed INScopus

Abstract

It is necessary to treat textile effluents before discharging them into natural water bodies as they harm the environment. Compared to conventional treatment methods, catalytic ozonation has gained attention due to its effectiveness in removing refractory organic pollutants. In this study, the coprecipitation method was used to synthesize a composite metal oxide of silver and cerium oxide, and the synthesized catalyst was used to eliminate the Reactive Black 5 (RB5) dye. X-ray diffraction, scanning electron microscopic, and Brunauer–Emmett–Teller surface area analyses were performed to characterize the synthesized catalyst. Afterwards, relevant experimental parameters, such as pH, ozone and catalyst dosages, and initial dye concentration, were investigated. The experiments revealed that the optimal experimental conditions were a pH value of 10, a catalyst dosage of 0.7 g/L, and an ozone dosage of 60 L/h. In these optimized conditions, the RB5 dye was entirely removed, and a chemical oxygen demand removal efficiency of 88% was achieved within a reaction time of 80 min. Furthermore, the recycling potential of the catalyst was tested for three cycles, and no deterioration in its activity was observed. Additionally, studies were conducted using a hydroxyl radical scavenger in order to understand the reaction pathway of the system. As a result, the indirect pathway was more dominant than the direct pathway in the system.

Effect of Operating Parameters on O3, O3/UV, O3/UV/PS Process Using Bubble Column Reactor for Degradation of Reactive Dyes

Journal

Journal NameJournal of The Institution of Engineers (India): Series A

Title of PaperEffect of Operating Parameters on O3, O3/UV, O3/UV/PS Process Using Bubble Column Reactor for Degradation of Reactive Dyes

PublisherSpringer

Volume Number104

Page Number565–578

Published YearMay 2023

ISSN/ISBN No2250-2157, 2250-2149

Indexed INScopus, EBSCO

Abstract

Reactive dyes are widely consumed in the textile industrial sector due to their excellent properties, bright color, excellent color fastness, and ease of application; nevertheless, they are challenging to treat using existing conventional treatment methods due to their refractory and hazardous nature. In the present work, simulated reactive dye wastewater degradation was experimented with using Ozonation, O3/UV, and O3/UV/PS process. The experiments were carried out in a 3 L reactor for two different reactive dyes: reactive red 120 (RR120) and reactive yellow 145 (RY145), with their initial concentration ranges from 500 to 1500 mgL−1. The present study concludes that simple ozonation resulted in only 49% TOC removal, while O3/UV processes removed 57% TOC after 90 min of treatment. The highest efficiency was achieved in a coupled O3/UV/PS process with TOC removal of 88% at 66 W UV intensity, 1:40 TOC:PS ratio, 1.86 gh−1 ozone dose, and alkaline pH. It was also observed that the TOC removal was higher in RR120 compared to RY145. Finally, electrical energy per order was evaluated for the various ozone-based AOPs, and O3/UV/PS provided the best results with % TOC removal.

Comparative study of ozone-based AOPs for degradation of Reactive Red 120

Journal

Journal NameResearch Journal of Chemistry and Environment

Title of PaperComparative study of ozone-based AOPs for degradation of Reactive Red 120

Volume Number26 (2)

Page Number41-46

Published YearFebruary 2022

Indexed INScopus

Abstract

The present work focuses on the comparative study of ozone-based advanced oxidation processes (AOPs): O3, O3/UV and O3/UV/PS to degrade synthetic wastewater containing Reactive Red 120 (RR120) dye. The effect of various parameters: pH, ozone flow rate, initial concentration of dye, persulfate dosage and UV light intensity was analyzed to assess the performance efficiency of AOPs. All three AOPs' performance was evaluated on decolorization, %TOC removal and ozone consumption. The highest degradation rate of 86.83% was achieved for O3/UV/PS, followed by 71.53% and 66.82% for O3/UV and O3 respectively. This better efficiency of O3/UV/PS is attributed to the fact that persulfate ions (S2O8 2-) upon activation produce sulfate radical (SO4 - ●), which is a powerful oxidant capable of degrading a wide variety of recalcitrant organic compounds. The study reveals that the efficiency of degradation of RR120 follows the order: O3/UV/PS > O3/UV > O3.

Comparative studies for the degradation of Reactive Black 5 dye employing ozone‑based AOPs

Journal

Journal NameNanotechnology for Environmental Engineering

Title of PaperComparative studies for the degradation of Reactive Black 5 dye employing ozone‑based AOPs

Published YearNovember 2021

Indexed INScopus

Feasibility study on degradation of RR120 dye from water by O3, O3/UV and O3/UV/Persulfate

Book Chapter

Book NameMulti-disciplinary Sustainable Engineering: Current and Future Trends

PublisherCRC Press

Author NameSandip Sharma, Siddhant Patel, Jayesh Ruparelia

Page Number233-238

Chapter TitleFeasibility study on degradation of RR120 dye from water by O3, O3/UV and O3/UV/Persulfate

Published YearAugust 2016

ISSN/ISBN No978-1-138-02845-6

Abstract

An attempt has been made, in the present study, to do a comparative investigation of the efficiency of ozone based oxidation processes viz., O3, O3/UV, O3/UV/ Persulfate, for the removal of Reactive Red 120 dye in synthetic wastewater. All the adopted ozone based oxidation processes for the study were tested for the most appropriate conditions concerning varied parameters like initial pH, ozone flow rate, persulfate concentration. Removal of the dye was observed to be dependent on the type of ozone based oxidation process and their process parameters as well. The maximum TOC removal was 75% and was achieved by O3/UV/Persulfate process.

Combined catalytic ozonation and UV treatment for removal of reactive red 120 dye from water

Book Chapter

Book NameMulti-disciplinary Sustainable Engineering: Current and Future Trends

PublisherCRC Press

Author NameSandip Sharma, Tarak Patel, Jayesh Ruparelia

Page Number207-212

Chapter TitleCombined catalytic ozonation and UV treatment for removal of reactive red 120 dye from water

Published YearAugust 2016

ISSN/ISBN No978-1-138-02845-6

Abstract

Treatment of effluents from textile and tannery industries containing dyes has not been very successful using conventional methods like biological treatments. To overcome this problem various Advanced Oxidation Processes (AOPs) are being suggested in literature. In this paper an attempt has been made with the focus on the degradation of reactive red 120 dye in water by catalytic ozonation in the presence of titanium oxide catalyst and UV light. The removal of dye was monitored by the removal of TOC and color employing all the three processes, ozonation, ozonation/catalyst, ozonation/catalyst/UV have been investigated, and degradation efficiency order observed as ozonation/catalyst/UV > ozonation/ catalyst > ozonation. The results proved that the catalyst may be activated by UV + ozone and increases the dye degradation efficiency.

Studies on Degradation of Reactive Red 135 Dye in Wastewater using Ozone

Journal

Journal NameProcedia Engineering

Title of PaperStudies on Degradation of Reactive Red 135 Dye in Wastewater using Ozone

PublisherElsevier

Volume Number51

Page Number451-455

Published YearFebruary 2013

Abstract

An attempt has been made in this paper to identify effects of efficient ozonation processes for decolorization and/or degradation of organic pollutants for environmental protection. In dyes, since the chromosphere groups with conjugated double bonds, which are responsible for color, can be broken down by ozone either directly or indirectly forming smaller molecules, thereby decreasing the color of the effluents. Ozonation and its combinations are effective for wastewater treatment. In the present study 99.9% decolorization of RR 135 was accomplished by ozonation. The time required for the complete decolorization gradually increase with increase in the initial dye concentration. For RR135 after 48, 55 and 67 min reaction time, complete decolorizaton was achieved at initial dye concentrations of 500, 1000 and 1500 mg/L, respectively. The COD removal efficiency gradually decreased with an increase in the initial concentration. For RR135 after 60, 65 and 87 min reaction time, the COD removal percentage was 66.66%, 61% and 56.64% at initial dye concentrations of 500, 1000 and 1500 mg/L, respectively.

Production of hydrogen rich fuel gas from waste plastics using continuous plasma pyrolysis reactor

Journal

Journal NameJournal of Environmental Management

Title of PaperProduction of hydrogen rich fuel gas from waste plastics using continuous plasma pyrolysis reactor

PublisherElsevier

Volume Number356

Page Number120446

Published YearApril 2024

ISSN/ISBN No0301-4797

Indexed INScopus, Web of Science

Strategic approach towards sustainability by promoting circular economy-based municipal solid waste management system- A review

Journal

Journal NameSustainable Chemistry and Pharmacy

Title of PaperStrategic approach towards sustainability by promoting circular economy-based municipal solid waste management system- A review

PublisherElsevier

Volume Number37

Page Number101337

Published YearFebruary 2024

ISSN/ISBN No2352-5541

Indexed INScopus, Web of Science

Experimental studies on renewable hydrogen production by steam reforming of glycerol over zirconia promoted on Ni/Al2O3 catalyst

Journal

Journal NameInternational Journal of Reactor Engineering

Title of PaperExperimental studies on renewable hydrogen production by steam reforming of glycerol over zirconia promoted on Ni/Al2O3 catalyst

PublisherDe Gruyter

Volume Number22

Page Number87-95

Published YearJanuary 2024

ISSN/ISBN No 1542-6580

Indexed INScopus

In-depth analysis of the effect of catalysts on plasma technologies for treatment of various wastes

Journal

Journal NameJournal of Environment Management

Title of PaperIn-depth analysis of the effect of catalysts on plasma technologies for treatment of various wastes

PublisherElsevier

Volume Number344

Page Number118335

Published YearOctober 2023

ISSN/ISBN No10958630

Indexed INScopus, Web of Science

A strategic review on Municipal Solid Waste (living solid waste) management system focusing on policies, selection criteria and techniques for waste-to-value

Journal

Journal NameJournal of Cleaner Production

Title of PaperA strategic review on Municipal Solid Waste (living solid waste) management system focusing on policies, selection criteria and techniques for waste-to-value

PublisherElsevier

Volume Number356

Page Number131908

Published YearJuly 2022

Indexed INScopus, Web of Science

A Critical Review on Solid Waste Treatment using Plasma Pyrolysis Technology

Journal

Journal NameChemical Engineering and Processing - Process Intensification

Title of PaperA Critical Review on Solid Waste Treatment using Plasma Pyrolysis Technology

PublisherElsevier

Volume Number177

Page Number108989

Published YearJuly 2022

Indexed INScopus, Web of Science

Ultrafine titanium-dioxide (rutile) based nano-crystalline dispersions as a pigment for waterborne coatings

Journal

Journal NameProgress in Color Colorants Coating

Title of PaperUltrafine titanium-dioxide (rutile) based nano-crystalline dispersions as a pigment for waterborne coatings

PublisherInstitute of Colour Science and Technology

Volume Number15

Page Number305-318

Published YearJanuary 2022

Indexed INScopus

Feasibility Analysis of Ca-looping Sorption Enhanced Steam Reforming of Bio-butanol for SOFC Application: Comparative Study with Steam and Auto-thermal Reforming

Journal

Journal NameEnergy Sources Part A: Recovery, Utilization, and Environmental Effects

Title of PaperFeasibility Analysis of Ca-looping Sorption Enhanced Steam Reforming of Bio-butanol for SOFC Application: Comparative Study with Steam and Auto-thermal Reforming

Published YearJanuary 2020

Indexed INScopus

Selective production of Hydrogen by steam reforming of glycerin over alumina supported nickel catalyst

Journal

Journal NameInternational Journal of ChemTech Research

Title of PaperSelective production of Hydrogen by steam reforming of glycerin over alumina supported nickel catalyst

Volume Number11 (8)

Page Number 204-212

Published YearOctober 2018

Indexed INIndian citation Index, EBSCO

Thermodynamic analysis and heat integration for hydrogen production from bio-butanol for SOFC application: Steam reforming vs Autothermal reforming

Journal

Journal NameEnergy Sources Part A: Recovery, Utilization, and Environmental Effects

Title of PaperThermodynamic analysis and heat integration for hydrogen production from bio-butanol for SOFC application: Steam reforming vs Autothermal reforming

PublisherTaylor & Francis

Volume Number40

Page Number2590-2598

Published YearApril 2018

Indexed INScopus

Process development for biobutanol steam reforming for PEMFC application

Journal

Journal NameInternational Journal of Engineering & Technology

Title of PaperProcess development for biobutanol steam reforming for PEMFC application

Volume Number7

Page Number110-112

Published YearApril 2018

Indexed INScopus

Hydrogen production from Glycerol: A Review

Journal

Journal NameInternational Journal of ChemTech Research

Title of PaperHydrogen production from Glycerol: A Review

Volume Number 10 (7)

Page Number1067-1078

Published YearApril 2018

Indexed INIndian citation Index, EBSCO

Photocatalytic degradation of RB21 dye by TiO2 and ZnO under natural sunlight, microwave irradiation and UV-reactor

Journal

Journal NameInternational Journal of Advanced Research in Engineering and Technology

Title of PaperPhotocatalytic degradation of RB21 dye by TiO2 and ZnO under natural sunlight, microwave irradiation and UV-reactor

Volume NumberVIII (1)

Page Number8-16

Published YearMay 2017

Indexed INScopus

Review paper on Catalytic Converter for Automotive Exhaust Emission

Conference

Title of PaperReview paper on Catalytic Converter for Automotive Exhaust Emission

Proceeding Name2nd International Conference on Current Trends in Technology NUiCONE 11

Published YearNovember 2011

Indexed INScopus

Removal of Nickel from Spent Catalysts using Ultrasonication Assisted Leaching

Journal

Journal NameJournal of Chemical and Biotechnology

Title of PaperRemoval of Nickel from Spent Catalysts using Ultrasonication Assisted Leaching

Volume Number86

Page Number1276-1281

Published YearNovember 2011

Indexed INScopus

Kinetic modeling of oxidative steam reforming of methanol over Cu/ZnO/CeO2/Al2O3 catalyst for selective production of hydrogen

Journal

Journal NameApplied Catalysis A: General

Title of PaperKinetic modeling of oxidative steam reforming of methanol over Cu/ZnO/CeO2/Al2O3 catalyst for selective production of hydrogen

Volume Number 356

Page Number189-200

Published YearAugust 2009

Indexed INScopus

Effect of preparation conditions on the characteristics and activity of Cu/ZnO/CeO2/Al2O3 catalysts for oxidative steam reforming of methanol

Journal

Journal NameIndian Chemical Engineer

Title of PaperEffect of preparation conditions on the characteristics and activity of Cu/ZnO/CeO2/Al2O3 catalysts for oxidative steam reforming of methanol

Volume Number49

Page Number351-361

Published YearSeptember 2007

Indexed INScopus

Hydrogen production by oxidative steam reforming of methanol using ceria promoted copper-alumina catalysts

Journal

Journal NameFuel Processing Technology

Title of PaperHydrogen production by oxidative steam reforming of methanol using ceria promoted copper-alumina catalysts

Volume Number88

Page Number 825-832

Published YearJuly 2007

Indexed INScopus

Selective production of hydrogen via oxidative steam reforming of methanol using Cu-Zn-Ce-Al oxide catalysts

Journal

Journal NameChemical Engineering Science

Title of PaperSelective production of hydrogen via oxidative steam reforming of methanol using Cu-Zn-Ce-Al oxide catalysts

Volume Number62

Page Number5436-5443

Published YearJune 2007

Indexed INScopus

“Experimental study and mechanistic kinetic modeling for selective production of hydrogen via catalytic steam reforming of methanol”

Journal

Journal NameChemical Engineering Science

Title of Paper “Experimental study and mechanistic kinetic modeling for selective production of hydrogen via catalytic steam reforming of methanol”

Volume Number62

Page Number5425-5435

Published YearMay 2007

Indexed INScopus, UGC List

Kinetic modeling of steam reforming of ethanol for the production of hydrogen over Co/Al2O3 catalyst

Journal

Journal NameChemical Engineering Journal

Title of PaperKinetic modeling of steam reforming of ethanol for the production of hydrogen over Co/Al2O3 catalyst

Volume Number125

Page Number139-147

Published YearApril 2007

Indexed INScopus

Influence of preparation method on performance of Cu(Zn)(Zr)-Alumina catalysts for the hydrogen production via steam reforming of methanol

Journal

Journal NameJournal of Porous Materials

Title of PaperInfluence of preparation method on performance of Cu(Zn)(Zr)-Alumina catalysts for the hydrogen production via steam reforming of methanol

Volume Number13

Page Number 381-386

Published YearApril 2006

Indexed INScopus

Production of hydrogen with low carbon monoxide formation via catalytic steam reforming of methanol

Journal

Journal NameASME Journal of Fuel Cell Science and Technology

Title of PaperProduction of hydrogen with low carbon monoxide formation via catalytic steam reforming of methanol

Volume Number3

Page Number1-6

Published YearMarch 2006

Indexed INScopus

Activity and stability enhancement of copper-alumina catalysts using cerium and zinc promoters for the selective production of hydrogen via steam reforming of methanol

Journal

Journal NameJournal of Power Sources

Title of PaperActivity and stability enhancement of copper-alumina catalysts using cerium and zinc promoters for the selective production of hydrogen via steam reforming of methanol

Volume Number159

Page Number139-143

Published YearJanuary 2006

Indexed INScopus

H2 production by steam reforming of methanol over Cu/ZnO/Al2O3 catalysts: transient deactivation kinetics modeling

Journal

Journal NameApplied Catalysis A: General

Title of PaperH2 production by steam reforming of methanol over Cu/ZnO/Al2O3 catalysts: transient deactivation kinetics modeling

Volume Number279

Page Number155-164

Published YearFebruary 2005

Indexed INScopus

Cost effective approach of using substrates for electrodes of enhanced efficient dye sensitized solar cell

Journal

Journal NameMaterials Research Express

Title of PaperCost effective approach of using substrates for electrodes of enhanced efficient dye sensitized solar cell

PublisherIOP Publishing Ltd

Volume Number5

Page Number095509

Published YearSeptember 2018

ISSN/ISBN No2053-1591

Indexed INScopus, Web of Science, EBSCO, UGC List, Others

Newer approach of using alternatives to (Indium doped) metal electrodes, dyes and electrolytes in dye sensitized solar cell

Journal

Journal NameMaterials Research Express

Title of PaperNewer approach of using alternatives to (Indium doped) metal electrodes, dyes and electrolytes in dye sensitized solar cell

PublisherIOP Publishing Ltd

Volume Number5

Page Number045509

Published YearApril 2018

ISSN/ISBN No2053-1591

Indexed INScopus, Web of Science, EBSCO, UGC List, Others

Polyaniline Based Sensors for Monitoring and Detection of Ammonia and Carbon monoxide Gases

Book Chapter

Book NameTrends and Applications in Advanced Polymeric Materials

PublisherScrivener Publishing (Wiley)

Author NameSanjay K. Nayak, Smita Mohanty, Lakshmi Unnikrishnan

Page Number145-162

Chapter TitlePolyaniline Based Sensors for Monitoring and Detection of Ammonia and Carbon monoxide Gases

Published YearOctober 2017

ISSN/ISBN No978-1-119-36363-7

Abstract

Gas sensor devices normally use metal oxide semiconductors requiring high operating temperature, due to which the sensor often suffers from instability, response variation, poor selectivity and low sensitivity. Due to these limitations, intrinsically conducting polymers, such as polyaniline (PANI), polypyrrole, polythiophenes and their derivatives, are progressively being used as sensing layers op

Polymer Based Organic Solar cell: An Overview

Book Chapter

Book NameTrends and Applications in Advanced Polymeric Materials

PublisherScrivener Publishing (Wiley)

Author NameSanjay K. Nayak, Smita Mohanty, Lakshmi Unnikrishnan

Page Number59-82

Chapter TitlePolymer Based Organic Solar cell: An Overview

Published YearOctober 2017

ISSN/ISBN No978-1-119-36363-7

Indexed INOthers

Abstract

Solar energy is a highly abundant renewable source and in this age of depleting fossil fuels, its harnessing is paramount, which has led mankind to discover organic solar cells. Discovered and researched in the 21st century, this field offers valuable hope for resolving future energy requirements. The emergence of polymer solar cells and their working methodology and construction are included in t

Engineering Chemistry, 2nd Edition

Book

PublisherMahajan Publishing House, Ahmedabad

Published YearAugust 2017

ISSN/ISBN No978-93-87096-08-0

Microbial Polysters: Production and Market

Book Chapter

Book NameHandbook of Composites from Renewable Materials

PublisherScrivener Publishing (Wiley)

Author NameVijay Kumar Thakur, Manju Kumari Thakur, Michael R. Kessler

Page Number95-108

Chapter TitleMicrobial Polysters: Production and Market

Published YearJuly 2017

ISSN/ISBN No978-1-119-22379-5

Biodegradable Polymers: Definition, Classification and Application as an Alternative to Plastic,

Book Chapter

Book NameHandbook of Sustainable Polymers: Processing and Applications

PublisherPan Stanford Publishing Pte. Ltd.

Author NameVijay Kumar Thakur and Manju Kumari Thakur

Page Number181-213

Chapter TitleBiodegradable Polymers: Definition, Classification and Application as an Alternative to Plastic,

Published YearJanuary 2016

ISSN/ISBN No978-981-4613-53-8

Engineering Chemistry

Book

PublisherMahajan Publishing House, Ahmedabad

Published YearAugust 2015

ISSN/ISBN No978-93-84955-23-6

Methods of Plastic Waste Management for the Conversion of Waste Plastics into Fuel

Book Chapter

Book NameRecycled Polymers: Properties and Applications

PublisherSmithers Rapara

Author NameVijay Kumar Thakur

Page Number185-204

Chapter TitleMethods of Plastic Waste Management for the Conversion of Waste Plastics into Fuel

Published YearJanuary 2015

ISSN/ISBN No978-1-91024-228-5.

Nanotechnology in Polymer Solar Cells

Book Chapter

Book NameNanotechnology, Novel Perspectives and Prospects

PublisherMcGraw Hill Education Private Ltd.

Author NameBhupinder Singh Bhoop, Anupama Kaushik, S K Mehta, S K Tripathi

Page Number612-615

Chapter TitleNanotechnology in Polymer Solar Cells

Published YearJanuary 2015

ISSN/ISBN No978-93-392-2182-9

Nanotechnology in Chemical Sensors

Book Chapter

Book NameNanotechnology, Novel Perspectives and Prospects

Publisher McGraw Hill Education Private Ltd. (Publisher)

Author NameBhupinder Singh Bhoop, Anupama Kaushik, S K Mehta, S K Tripathi

Page Number607-611

Chapter TitleNanotechnology in Chemical Sensors

Published YearJanuary 2015

ISSN/ISBN No978-93-392-2182-9.

Chemistry for Engineers

Book

PublisherMahajan Publishing House, Ahmedabad

Published YearSeptember 2013

ISSN/ISBN No978-93-83058-22-8

Applied Chemistry, 2nd Edition

Book

PublisherMahajan Publishing House, Ahmedabad

Published YearSeptember 2013

ISSN/ISBN No978-93-83058-20-4

Study of Some Oscillatory Reactions and their Applications: Chemical Clock Reactions

Book

PublisherLambert Academic Publishing, Saarbrücken -Germany

Published YearAugust 2013

ISSN/ISBN No978-3-659-43924-7

Liquid-Liquid Extraction and Spectrophotometric Determination of Vanadium(V) with p-Carboxy-N-Phenyl-Calix[4]resorcinarene-hydroxamic Acid

Journal

Journal NameProcedia Engineering

Title of PaperLiquid-Liquid Extraction and Spectrophotometric Determination of Vanadium(V) with p-Carboxy-N-Phenyl-Calix[4]resorcinarene-hydroxamic Acid

PublisherSciverse ScienceDirect

Volume Number51

Page Number347-354

Published YearJanuary 2013

ISSN/ISBN No1877-7058

Indexed INScopus, Others

Wheat as a promising substitute of corn for bio-ethanol production

Journal

Journal NameProcedia Engineering

Title of PaperWheat as a promising substitute of corn for bio-ethanol production

PublisherSciverse ScienceDirect

Volume Number51

Page Number355-362

Published YearJanuary 2013

ISSN/ISBN No1877-7058

Indexed INScopus, Others

Spectrophotometic Trace Analysis of Transition Metal Ions

Book

PublisherLambert Academic Publishing, Saarbrücken -Germany

Published YearJuly 2012

ISSN/ISBN No978-3-659-18634-9

Engineering Chemistry

Book

PublisherMahajan Publishing House, Ahmedabad

Published YearJanuary 2011

ISSN/ISBN No978-93-81256-28-2

Engineering Chemistry

Book

PublisherUniversity Science Press, Delhi

Published YearJanuary 2011

ISSN/ISBN No978-93-80856-45-2

Applied Chemistry

Book

PublisherMahajan Publishing House, Ahmedabad

Published YearJanuary 2010

ISSN/ISBN No978-93-80109-78-7)

The Journey of a Molecule to Macromolecule

Book

Publisher Lambert Academic Publishing, Saarbrücken -Germany

Published YearJanuary 2010

ISSN/ISBN No978-3-8433-7437-8)

Supervanadophile: Complexation, Preconcentration and Transport Studies of Vanadium by Octa Functionalized Calix[4]Resorcinarene-Hydroxamic Acid

Journal

Journal NameJ. Iran. Chem. Soc

Title of PaperSupervanadophile: Complexation, Preconcentration and Transport Studies of Vanadium by Octa Functionalized Calix[4]Resorcinarene-Hydroxamic Acid

PublisherSpringer

Volume Number5

Page Number646

Published YearJanuary 2008

ISSN/ISBN No1735-207X

Indexed INScopus, Web of Science, EBSCO, UGC List

Synthesis of Calix[4]Resorcinarene Based Dyes and its Application in Dyeing of Fibres

Journal

Journal NameE-Journal of Chemistry/ Journal of Chemistry

Title of PaperSynthesis of Calix[4]Resorcinarene Based Dyes and its Application in Dyeing of Fibres

PublisherHindawi

Volume Number5

Page Number1037

Published YearJanuary 2008

ISSN/ISBN No0973-4945

Indexed INScopus, EBSCO, UGC List, Others

Solid-Phase Extractive Preconcentration and Separation of Lanthanum(III) and Cerium(III) Using a Polymer-Supported Chelating Calix[4]Arene Resin

Journal

Journal NameJournal of Analytical Chemistry

Title of PaperSolid-Phase Extractive Preconcentration and Separation of Lanthanum(III) and Cerium(III) Using a Polymer-Supported Chelating Calix[4]Arene Resin

PublisherSpringer

Volume Number62

Page Number104

Published YearJanuary 2007

ISSN/ISBN No1061-9348

Indexed INScopus, PubMed, Web of Science, UGC List, Others

Liquid-Liquid Extraction, Preconcentration and Transport Studies of Lanthanum(III) with Calix[4]Resorcinarene-Hydroxamic Acid

Journal

Journal NameJournal of Chilean Chemical Society

Title of PaperLiquid-Liquid Extraction, Preconcentration and Transport Studies of Lanthanum(III) with Calix[4]Resorcinarene-Hydroxamic Acid

PublisherChilean Chemical Society

Volume Number52

Page Number1177

Published YearJanuary 2007

ISSN/ISBN No0717-9707

Indexed INScopus, Web of Science, UGC List, Others

Octafunctionalized Calix[4]Resorcinarene-N-Fenil-Acetohydroxamic Acid for the Separation, Preconcentration and Transport Studies of Cerium (IV)

Journal

Journal NameJournal of the Brazilian Chemical Society

Title of PaperOctafunctionalized Calix[4]Resorcinarene-N-Fenil-Acetohydroxamic Acid for the Separation, Preconcentration and Transport Studies of Cerium (IV)

PublisherSociedade Brasileira de Quimica

Volume Number17

Page Number1316

Published YearJanuary 2006

ISSN/ISBN No1678-4790

Indexed INScopus, Web of Science, UGC List, Others

Simultaneous Preconcentration of Uranium(VI) and Thorium(IV) from Aqueous Solutions Using a Chelating Calix[4]arene Anchored Chloromethylated Polystyrene Solid Phase

Journal

Journal NameTalanta

Title of PaperSimultaneous Preconcentration of Uranium(VI) and Thorium(IV) from Aqueous Solutions Using a Chelating Calix[4]arene Anchored Chloromethylated Polystyrene Solid Phase

PublisherElsevier B.V

Volume Number70

Page Number257

Published YearJanuary 2006

ISSN/ISBN No0039-9140

Indexed INScopus, PubMed, Web of Science, UGC List, Others

Merrifield Resin Supported Chelate Forming Calix[4]Arene-O-Vanillinthiosemicarbazone Resin Employed for the Separation, Preconcentration and Trace Determination of Cr(VI), As(III) And Tl(I) in Water Samples

Journal

Journal NameSeparation Science & Technology

Title of PaperMerrifield Resin Supported Chelate Forming Calix[4]Arene-O-Vanillinthiosemicarbazone Resin Employed for the Separation, Preconcentration and Trace Determination of Cr(VI), As(III) And Tl(I) in Water Samples

PublisherTaylor & Francis

Volume Number41

Page Number123

Published YearJanuary 2006

ISSN/ISBN No0149-6395

Indexed INScopus, PubMed, Web of Science, UGC List, Others

Selective Extraction, Preconcentration and Transport Studies of Thorium (IV) Using Octa-Functionalized Calix[4]Resorcinarene-Hydroxamic Acid

Journal

Journal NameAnalytical Sciences

Title of PaperSelective Extraction, Preconcentration and Transport Studies of Thorium (IV) Using Octa-Functionalized Calix[4]Resorcinarene-Hydroxamic Acid

PublisherThe Japan Society for Analytical Chemistry

Volume Number21

Page Number129

Published YearJanuary 2005

ISSN/ISBN No1348-2246

Indexed INScopus, Web of Science, UGC List

Molecular Octopus: Octa-Functionalized Calix[4]resorcinarene-Hydroxamic acid [C4RAHA] for Selective Extraction, Separation and Preconcentration of U(VI)

Journal

Journal NameTalanta

Title of PaperMolecular Octopus: Octa-Functionalized Calix[4]resorcinarene-Hydroxamic acid [C4RAHA] for Selective Extraction, Separation and Preconcentration of U(VI)

PublisherElsevier Science

Volume Number65

Page Number466

Published YearJanuary 2005

ISSN/ISBN No0039-9140

Indexed INScopus, PubMed, Web of Science, UGC List

Application of a Chelate Forming Calix[4]Arene-O-Vanillinthiosemicarbazone Resin to the Separation, Preconcentration and Trace Determination of Cu(II), Cd(II) And Pb(II) in Natural Water Samples

Journal

Journal NameMicrochimica Acta

Title of PaperApplication of a Chelate Forming Calix[4]Arene-O-Vanillinthiosemicarbazone Resin to the Separation, Preconcentration and Trace Determination of Cu(II), Cd(II) And Pb(II) in Natural Water Samples

PublisherSpringer Verlag

Volume Number147

Page Number253

Published YearJanuary 2004

ISSN/ISBN No0026-3672

Indexed INScopus, Web of Science, UGC List, Others

Abstract

A very stable calixarene-based polymeric chelating resin has been synthesized by covalently linking calix[4]arene-o-vanillinthiosemicarbazone through its ‘lower rim’ to Merrifield resin. It was characterized by FT IR, 1H NMR and elemental analysis. The resin was efficiently employed to separate and preconcentrate toxic metal ions such as Cu(II), Cd(II) and Pb(II) in a column prior to their determi