Environmental and Energy Engineering

Studies on electrochemical treatment of dairy wastewater using aluminum electrode

  1. Jai Prakash Kushwaha,
  2. Vimal Chandra Srivastava*,
  3. Indra Deo Mall*

Article first published online: 29 NOV 2010

DOI: 10.1002/aic.12463

Issue

AIChE Journal

AIChE Journal

Volume 57, Issue 9, pages 2589–2598, September 2011

Additional Information

How to Cite

Prakash Kushwaha, J., Chandra Srivastava, V. and Deo Mall, I. (2011), Studies on electrochemical treatment of dairy wastewater using aluminum electrode. AIChE J., 57: 2589–2598. doi: 10.1002/aic.12463

Author Information

  1. Department of Chemical Engineering, Indian Institute of Technology, Roorkee, Roorkee 247667, Uttarakhand, India

*Department of Chemical Engineering, Indian Institute of Technology, Roorkee, Roorkee 247667, Uttarakhand, India

Publication History

  1. Issue published online: 3 AUG 2011
  2. Article first published online: 29 NOV 2010
  3. Accepted manuscript online: 15 OCT 2010 11:00AM EST
  4. Manuscript Revised: 27 SEP 2010
  5. Manuscript Received: 3 JUL 2010

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Keywords:

  • RSM;
  • dairy wastewater;
  • electrochemical;
  • COD removal;
  • aluminum electrode

Abstract

This study reports results of electrochemical treatment to the synthetic dairy wastewater using aluminum electrode. Response surface methodology with four factors and five level full factorial central composite design has been used to design the experiments. Four operational parameters, namely current density (J): 61.73–308.64 A/m2; dosage of sodium chloride (NaCl) (m): 0–2 g/l; electrolysis time (t): 10–90 min and initial pH (pHo): 5–11, have been taken as input parameters and percentage chemical oxygen demand (COD) removal (Y1) and the specific energy consumed (kWh per Kg of COD removed, Y2) have been taken as responses of the system. Multiresponse optimization technique has been applied to find values of operational parameters which maximize the Y1 and simultaneously minimize Y2. The optimum values of operational parameters were found to be J = 123.46 A/m2, m = 2.0 g/l, t = 74 min, and pHo = 6.5. Optimum Y1 and Y2 were found to be 70.91% and 1.32 kWh/kg COD removed. © 2010 American Institute of Chemical Engineers AIChE J, 2011

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