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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1922
Title: Comparison of electrocoagulation, peroxi-electrocoagulation and peroxi-coagulation processes for treatment of simulated purified terephthalic acid wastewater: Optimization, sludge and kinetic analysis
Authors: Sandhwar V.K.
Prasad B.
Published in: Korean Journal of Chemical Engineering
Abstract: This study mainly focuses on a comparative study of electrocoagulation (EC), peroxi-electrocoagulation (PEC) and peroxi-coagulation (PC) processes for the treatment of aqueous solution containing major toxic components of purified terephthalic acid wastewater: benzoic acid (BA), terephthalic acid (TPA), para-toluic acid (p-TA) and phthalic acid (PA). The solution was initially treated by acid treatment method at various pH (2-4) and temperature (15-60 °C). The supernatant was further remediated by EC, PEC and PC methods independently. Process variables such as pH (4-12) and pH (1-5), current density (45.72-228.60 A/m2), electrolyte concentration (0.04-0.08 mol/L), electrode gap (1-3 cm), H2O2 concentration (600-1,000 mg/L) and reaction time (20-100 min) during EC, PEC and PC treatment were effectively optimized through central composite design under Design Expert software. Maximum COD removal of 60.76%, 73.91%, 66.68% with energy consumption (kWh/kg COD removed) of 95.81, 49.58, 69.26 was obtained by EC, PEC and PC treatments, respectively, at optimum conditions. Electrochemical methods were compared by removal capacities, consumption of energy, operating cost, degradation kinetics and sludge characteristics. PEC treatment was found most effective among EC, PEC and PC processes due to its highest removal capacity and lowest energy consumption features. © 2018, Korean Institute of Chemical Engineers, Seoul, Korea.
Citation: Korean Journal of Chemical Engineering (2018), 35(4): 909-921
URI: https://doi.org/10.1007/s11814-017-0336-2
http://repository.iitr.ac.in/handle/123456789/1922
Issue Date: 2018
Publisher: Springer New York LLC
Keywords: Electrochemical Treatment
Kinetic Study
Optimization
Purified Terephthalic Acid
Response Surface Methodology
ISSN: 2561115
Author Scopus IDs: 57193263981
15838004000
Author Affiliations: Sandhwar, V.K., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Prasad, B., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand 247667, India
Funding Details: The authors are grateful to IIT Roorkee, India and MHRD, New Delhi, India for providing the required technical facilities and financial support.
Corresponding Author: Sandhwar, V.K.; Department of Chemical Engineering, Indian Institute of Technology RoorkeeIndia; email: vksandhwar@gmail.com
Appears in Collections:Journal Publications [CH]

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