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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1919
Title: A comparative study of electrochemical degradation of benzoic acid and terephthalic acid from aqueous solution of purified terephthalic acid (PTA) wastewater
Authors: Sandhwar V.K.
Prasad B.
Published in: Journal of Water Process Engineering
Abstract: In this article, studies have been performed on the treatment of benzoic acid (BA), terephthalic acid (TPA) and COD from synthetic binary solution of PTA wastewater. Acid precipitation pretreatment of aqueous solution was performed initially at different pH (2–5) and temperature (15–60 °C). The acid treated solution was re-treated by electrochemical oxidation (EO) and electro-Fenton (EF) techniques using graphite electrodes. Independent operating parameters namely initial pH: (1–9), current density (A/m2): (30.48–91.45), electrolyte concentration (g/L): (0.5–1.5) and electrolysis time (min): (10–90) for EO process and pH (1–5), current density (A/m2): (30.48–91.45), Fe2+ concentration (mmol/L): (0.5–1.5) and electrolysis time (min): (10–90) for EF process were modeled and optimized by central composite design (CCD) in response surface methodology (RSM). The maximum removal efficiencies of the process during EF treatment were 80.45% of BA, 76.83% of TPA and 73.70% of COD with energy consumption (kWh/kg COD removed) – 19.39 at optimum operating conditions. During EC treatment removal capacities were 70.76%, 68.52% and 67.27% with 31.01 (kWh/kg COD removed) respectively. It was observed that EF process was more efficient than EO based on removals of BA, TPA and COD with minimum energy consumption. © 2017 Elsevier Ltd
Citation: Journal of Water Process Engineering (2019), 30(): -
URI: https://doi.org/10.1016/j.jwpe.2017.03.006
http://repository.iitr.ac.in/handle/123456789/1919
Issue Date: 2019
Publisher: Elsevier Ltd
Keywords: Benzoic acid
Electro-Fenton
Electrochemical oxidation
Graphite electrode
Terephthalic acid
ISSN: 22147144
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: Authors are grateful to the Department of Chemical Engineering, Indian Institute of Technology, Roorkee, for providing technical facilities and Ministry of Human Resource Development (Grant No. MHR02-23/41-103-427/429 ), New Delhi, India for 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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