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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/1935
Title: Development of Box Behnken design for treatment of terephthalic acid wastewater by electrocoagulation process: Optimization of process and analysis of sludge
Authors: Garg K.K.
Prasad B.
Published in: Journal of Environmental Chemical Engineering
Abstract: Present research work deals with the treatment of terephthalic acid (TPA) wastewater by electrocoagulation (EC) process. TPA is counted in the major toxic pollutants of purified terephthalic acid (PTA) wastewater and contributes high COD. Box Behnken Design (BBD) in Response Surface Methodology (RSM) tool of Design Expert Software (8.0.7.1, 2010, Stat-Ease Inc., Minnepolis) has been developed for this study. Effect of various operating parameters viz. pH: (7 to 11), current density (A/m2): (38.40 to 105), electrolysis time (min): (15.0 to 60.0) and NaCl dosages (g/L): (0.50 to 1.25) on percentage removal of TPA, chemical oxygen demand (COD) and energy consumption (kW h/kg CODremoved) are presented. Maximum percentage removal of TPA: 89.75, 73.86; COD: 83.88, 67.63 and minimum energy consumption (kW h/kg CODremoved): 57.25, 70.84 are found at optimum operating conditions using Al and Fe electrodes respectively. Properties of sludge were analyzed by point of zero charge, settling, XRD, SEM/EDX, FTIR and TGA/DTA. Process operating costs ($) (Al: 8.59, Fe: 9.82) are determined based on electrical energy, electrode consumption and electrode maintenance cost for per kg of COD removal at optimum operating conditions. © 2015 Elsevier Ltd. All rights reserved.
Citation: Journal of Environmental Chemical Engineering (2016), 4(1): 178-190
URI: https://doi.org/10.1016/j.jece.2015.11.012
http://repository.iitr.ac.in/handle/123456789/1935
Issue Date: 2016
Publisher: Elsevier Ltd
Keywords: BBD
Electrocoagulation
Operating cost
Sludge analysis
Terephthalic acid
ISSN: 22133437
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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