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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2791
Title: Treatment of bio-digester effluent by electrocoagulation using iron electrodes
Authors: Kumar M.
Ponselvan F.I.A.
Malviya J.R.
Srivastava, Vimal Chandra
Mall I.D.
Published in: Journal of Hazardous Materials
Abstract: The present paper deals with chemical oxygen demand (COD) reduction of a bio-digester effluent (BDE) in a batch electrocoagulation (EC) reactor using iron electrode. A central composite (CC) experimental design has been employed to evaluate the individual and interactive effects of four independent parameters on the COD removal efficiency. The parameters studied are current density (j): 44.65-223.25 A/m2; initial pH (pH0): 2-8; inter-electrode distance (g): 1-3 cm and electrolysis time (t): 30-150 min. The results have been analyzed using Pareto analysis of variance (ANOVA). Analysis showed a high coefficient of determination value (R2 = 0.8547) and satisfactory prediction for second-order regression model. Graphical response surface and contour plots have been used to locate the optimum values of studied parameters. Maximum COD and color reduction of 50.5% and 95.2%, respectively, was observed at optimum conditions. Present study shows that EC technique can be employed in distilleries to reduce the pollution load before treatment in aerobic treatment plants to meet the discharge standards. © 2008 Elsevier B.V. All rights reserved.
Citation: Journal of Hazardous Materials (2009), 165(43833): 345-352
URI: https://doi.org/10.1016/j.jhazmat.2008.10.041
http://repository.iitr.ac.in/handle/123456789/2791
Issue Date: 2009
Keywords: COD removal
Distillery effluent
Electrocoagulation
Iron electrode
Response surface methodology
ISSN: 3043894
Author Scopus IDs: 57209558865
25522067800
57210027636
35565811700
55664368900
Author Affiliations: Kumar, M., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Ponselvan, F.I.A., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Malviya, J.R., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Srivastava, V.C., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Mall, I.D., Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India
Funding Details: Authors (F.A.P., M.K., J.R.M.) are thankful to SRIC office, IIT Roorkee for providing financial support to undertake this research work. V.C.S. and I.D.M. are grateful to the Ministry of Human Resource and Development, Government of India, for financial assistance in the research work.
Corresponding Author: Mall, I.D.; Department of Chemical Engineering, Indian Institute of Technology Roorkee, Roorkee, 247667, India; email: id_mall2000@yahoo.co.in
Appears in Collections:Journal Publications [CH]

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