Electrochemical removal of CI Acid orange 10 from aqueous solutions

Muthukumar, M and Karuppiah, P T and Bhaskar Raju, G (2007) Electrochemical removal of CI Acid orange 10 from aqueous solutions. Separation and Purification Technology, 55 (2). pp. 198-205.

Restricted to NML users only. Others may use ->



The removal of CI Acid orange 10 from aqueous solutions was studied by electrocoagulation and electrooxidation techniques. For electrocoagulation, metallic iron was used as electrodes whereas graphite and IrO2/TaO2/RuO2 coated titanium were used in the case of electrooxidation. During electro-coagulation, the CI Acid orange 10 molecule was split into aniline and 1-amino-2-naphthol-6,8-disulfonic acid due to reductive cleavage of azo bond. The latter was found to co-precipitate with iron oxy-hydroxide whereas aniline remained in aqueous phase. The zeta-potential measurements and FT-IR spectroscopic studies have revealed the chemical interaction between 1-amino-2-naphthol-6,8-disulfonic acid and iron oxy-hydroxide which formed as a result of anodic dissolution. De-colorization and degradation of the dyewas followed using UV–Vis spectroscopy, GC–MS and TOC measurements. The CI Acid orange 10 was completely oxidized and removed with graphite electrodes. However the oxidation was only partial with IrO2/TaO2/RuO2 coated titanium electrodes. The effect of initial pH and current density on the removal of CI Acid orange10 was discussed.

Item Type:Article
Official URL/DOI:doi:10.1016/j.seppur.2006.11.014
Uncontrolled Keywords:CI Acid orange 10; Electrocoagulation; Electro-oxidation; Dye removal; Reductive cleavage; TOC reduction, purification, wastewater
Divisions:NML Chennai > Mineral Processing
ID Code:4030
Deposited By:Dr. G Bhaskar Raju
Deposited On:26 Sep 2011 13:26
Last Modified:26 Sep 2011 13:26
Related URLs:

Repository Staff Only: item control page