Nidheesh, P. V. and Kumar, Abhijeet and Syam Babu, D. and Scaria, Jaimy and Suresh Kumar, M. (2020) Treatment of mixed industrial wastewater by electrocoagulation and indirect electrochemical oxidation. Chemosphere, 251. p. 126437. ISSN 00456535

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Abstract

Treatment of mixed industrial wastewater is a challenging task due to its high complexity. This work scrutinizes the electrochemical treatment of mixed industrial wastewater, specifically electrocoagulation and indirect electrochemical oxidation processes through COD and color removal studies. Both processes are found to be more efficient at the wastewater pH. Monopolar connection was found more effective than bipolar connection for the removal of COD and color from wastewater. The monopolar connection removed COD up to 55% and color 56% whereas bipolar connection leads to the removal of 43% and 48% respectively at wastewater pH with an applied voltage 1.5 V in the course of 1 h of electrolysis. In the case of indirect electrochemical oxidation process using graphite electrodes, the COD and color abatement efficiencies of the indirect electrochemical oxidation process were found as 55% and 99.8%, respectively within 1 h of electrolysis conducted at pH 7.7, applied voltage 4 V, and NaCl concentration 1gL1 . This work also highlights the importance of the presence of electrolytes in the indirect electrochemical oxidation process as the external addition of sodium chloride significantly enhanced both COD and color elimination efficiency

Item Type:	Article
Uncontrolled Keywords:	Mixed Industrial Wastewater; Electrocoagulation; Indirect Electrochemical Oxidation; Active Chlorine; COD Removal; Color Removal
Subjects:	Industrial Wastewater Treatment & Disposal Water Pollution Waste Water Treatment
Divisions:	UNSPECIFIED
Depositing User:	Dr. Nidheesh P V
Date Deposited:	18 Jan 2021 11:10
Last Modified:	18 Jan 2021 11:10
URI:	http://neeri.csircentral.net/id/eprint/1270

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