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Received April 26, 2007
Accepted June 12, 2007
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Degradation of 2-chlorophenol by Fenton and photo-Fenton processes
Department of Environmental Engineering, Pukyong National University, Busan 608-737, Korea 1Department of Environmental Atmospheric Sciences, Pukyong National University, Busan 608-737, Korea
ikkim@pknu.ac.kr
Korean Journal of Chemical Engineering, January 2008, 25(1), 46-52(7), 10.1007/s11814-008-0008-3
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Abstract
The photodegradation of a specific organic pollutant using the Fenton and the photo-Fenton processes has been examined in aqueous solution. The applications of the Fenton process and the photo-Fenton process to the degradation of 2-chlorophenol (2-CP) were investigated. The dependence on the following experimental conditions had been evaluated: initial pH (1.0-9.0), hydrogen peroxide (0.67-2 mM), ferrous ions (0.1-2 mM), initial concentration of 2-CP (0.1-2mM). The optimal experimental conditions were 1 mM H2O2, 1 mM ferrous ion and pH 3.0. Under the optimal conditions, the degradation efficiency of 2-CP in the photo-Fenton process was enhanced 4% more than that of the Fenton process. Experimental results about the degradation of 2-CP show that UV irradiation improves the degradation efficiency of the Fenton process. The major intermediate formed during the degradation of 2-CP was pbenzoquinone.
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References
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