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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received October 11, 2007
Accepted December 24, 2008

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Decomposition of acetic acid by advanced oxidation processes

Ju Young Park In Hwa Lee^†

Department of Environmental Engineering, BK21 Team for Biohydrogen Production, Chosun University, Gwangju 501-759, Korea

ihlee@chosun.ac.kr

Korean Journal of Chemical Engineering, March 2009, 26(2), 387-391(5), 10.1007/s11814-009-0065-2

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Abstract

Decomposition of acetic acid, known as a non-degradable organic compound, was conducted for several advanced oxidation processes such as TiO2-UV-H2O2, Fe2+-H2O2-UV, UV-H2O2 and TiO2-UV system. Acetic acid was efficiency decomposed within 120 minutes of UV radiation under the initial concentration of 500 ppm. The initial chemical oxygen demands (CODcr) tended to increase as H2O2 was added in most reactions. However, the initial CODcr was not increased as H2O2 was consumed for the oxidation of iron salt in the photo-Fenton oxidation process. CODcr and concentration of acetic acid rapidly decreased as the mole ratio of hydrogen peroxide increased owing to rapid decomposition of the reactant at the beginning of reaction. All reactions show first order pseudo reaction rate. The CODcr removal rate and the decomposition efficiency of acetic acid were fastest in the UV-H2O2 process.

Keywords

Advanced Oxidation Processes Photocatalysis Reaction Photo-Fenton Oxidation Acetic Acid

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