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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1934
Title: Treatment of multicomponent aqueous solution of purified terephthalic acid wastewater by electrocoagulation process: Optimization of process and analysis of sludge
Authors: Garg K.K.
Prasad B.
Published in: Journal of the Taiwan Institute of Chemical Engineers
Abstract: The present research work is based on degradation of major pollutants of purified terephthalic acid (PTA) wastewater by electrocoagulation (EC) process. Terephthalic acid (TPA), benzoic acid (BA) and para-toluic acid (p-TA) are the major pollutants of PTA wastewater. A central composite design (CCD) has been developed for maximum removal of TPA, BA, p-TA, COD and minimum consumption of energy. Effects of various process parameters viz. pH: (5-13), current density: (49.5-255.5 A/m2), supporting electrolyte concentration, NaCl: (0.25-2.25 g/L) and electrolysis time: (15-95 min) are studied on removal efficiencies of responses. Aluminium (Al) and iron (Fe) were selected as electrode materials. Maximum percentage removal of TPA: 56.21, 54.10; BA: 59.52, 53.84; p-TA: 45.71, 39.91, and COD: 49.91, 42.95 are achieved at optimum operating conditions by Al and Fe electrodes respectively. Operating cost of the process was calculated based on energy consumption, electrode consumption, sludge disposable, and transportation costs and found $13.64 and $14.46 per kg of COD removed by Al and Fe electrodes respectively. Sludge residues obtained after EC treatment at optimum operating conditions are analyzed by settling, sludge volume index (SVI), XRD, SEM/EDX, point of zero charge (PZC), FTIR and DGA/TGA. © 2015 Taiwan Institute of Chemical Engineers.
Citation: Journal of the Taiwan Institute of Chemical Engineers (2016), 60(): 383-393
URI: https://doi.org/10.1016/j.jtice.2015.10.038
http://repository.iitr.ac.in/handle/123456789/1934
Issue Date: 2016
Publisher: Taiwan Institute of Chemical Engineers
Keywords: Benzoic acid
Electrocoagulation
Optimization
Para-toluic acid
Sludge analysis
Terephthalic acid
ISSN: 18761070
Author Scopus IDs: 56112049800
15838004000
Author Affiliations: Garg, K.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
Corresponding Author: Garg, K.K.; Department of Chemical Engineering, Indian Institute of Technology RoorkeeIndia; email: kkgarg.garg23@gmail.com
Appears in Collections:Journal Publications [CH]

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