Title: Removal of Yellow ME 7 GL from industrial effluent using electrochemical and adsorption techniques

Authors: Alok Mittal, Rajiv Jain, Jyoti Mittal, Shaily Varshney, Shalini Sikarwar

Addresses: Department of Chemistry, Maulana Azad National Institute of Technology, Bhopal 462 051, India. ' Department of Environmental Chemistry, Jiwaji University, Gwalior 474 011, India. ' Department of Chemistry, Maulana Azad National Institute of Technology, Bhopal 462 051, India. ' Department of Environmental Chemistry, Jiwaji University, Gwalior 474 011, India. ' Department of Environmental Chemistry, Jiwaji University, Gwalior 474 011, India

Abstract: Attempts have been made to remove toxic dye Yellow ME7GL using electrochemical and adsorption techniques. Both techniques are capable of reducing toxicity and producing clean water for reuse. The electrochemical removal is carried out at platinum electrode and cyclic voltammograms of the dye solutions have been recorded at different pH, concentrations, scan rates, etc. The adsorption of the dye has been carried out over activated charcoal and wheat husk and verified by Langmuir and Freundlich adsorption isotherms. The decolouration of the dye was also examined by monitoring the Chemical Oxygen Demand (COD) of the untreated and treated dye solutions.

Keywords: azo dyes; reactofix; Yellow ME7GL; electrochemical techniques; adsorption; industrial effluent; toxic dyes; wastewater treatment; water quality; clean water; activated charcoal; wheat husks; decolouration.

DOI: 10.1504/IJEP.2010.036929

International Journal of Environment and Pollution, 2010 Vol.43 No.4, pp.308 - 323

Accepted: 11 Mar 2009
Published online: 16 Nov 2010 *

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