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Journal of ChemistryVolume 2013 2013, Article ID 809318, 7 pages

Research ArticleChemistry Department, Islamic Azad University, Yazd Branch, P. O. Box 89195-155, Yazd, Iran

Received 25 May 2013; Revised 19 June 2013; Accepted 25 June 2013

Academic Editor: Oleksandr A. Loboda

Copyright © 2013 Saeedeh Hashemian. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Oxidation by Fenton-like Fe

-H2O2 reactions is proven to be an economically feasible process for destruction of a variety of hazardous pollutants in wastewater. In this study, the degradation and mineralization of malachite green dye are reported using Fenton-like reaction. The effects of different parameters like pH of the solution, the initial concentrations of Fe

, H2O2, and dye, temperature, and added electrolytes Cl

and on the oxidation of the dye were investigated. Optimized condition was determined. The efficiency of 95.5% degradation of MAG after 15 minutes of reaction at pH 3 was obtained. TOC removal indicates partial and insignificant mineralization of malachite green dye. The results of experiments showed that degradation of malachite green dye in Fenton-like oxidation process can be described with a pseudo-second-order kinetic model. The thermodynamic constants of the Fenton oxidation process were evaluated. The results implied that the oxidation process was feasible, spontaneous, and endothermic. The results will be useful for designing the treatment systems of various dye-containing wastewaters.





Autor: Saeedeh Hashemian

Fuente: https://www.hindawi.com/



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