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Title: Treatment and Decolourisation of an Azo Dye in Industrial Effluent
Authors: Jain, Rajeev
Keywords: Decolourisation;Azo dye;Industrial effluent
Issue Date: Aug-2003
Publisher: CSIR
Abstract: The electrochemical behaviour of Orange II is studied voltammetrically using Pt foil and steel foil as working electrodes, while Pt wire and Ag/AgCI were used as auxiliary and reference electrodes respectively. Controlled potential electrolysis was carried out at -1.20 V. The decrease in cathodic peak and peak current lead to decolourisation of solution (2×10-4 m) with a significant decrease in COD from 1840 mg/L to 174 mg/L. Orange II is found to yield a mixture of sulphanilic acid and 1-amino-2-naphthol upon electrochemical reduction. Based on voltammetric and spectrophotometric analysis, rate of the reaction was determined and found to be of first order.
Page(s): 813-819
ISSN: 0975-1084 (Online); 0022-4456 (Print)
Appears in Collections:JSIR Vol.62(08) [August 2003]

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