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Received February 20, 2007
Accepted May 23, 2007
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Degradation of 2,4-dichlorophenol in aqueous solution by sono-Fenton method
Centre for Environmental Studies, Anna University, Chennai-600 025, India 1Department of Chemical Engineering, Chungnam National University, Yuseong-gu, Daejeon 305-764, Korea
rhadum@cnu.ac.kr
Korean Journal of Chemical Engineering, January 2008, 25(1), 112-117(6), 10.1007/s11814-008-0020-7
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Abstract
This study presents the results of the Sono-Fenton process for the degradation of 2,4-dichlorophenol (DCP). The influential parameters such as H2O2, Fe2+ and pH for the Sono-Fenton process were investigated. Sono-Fenton method was found to be the best one for degradation efficiency of DCP when compared with that of the Fenton process. The optimum concentrations for the degradation of DCP using conventional Fenton’s method were found to be 20 mg/L of Fe2+ and 580 mg/L of H2O2 at pH 2.5. In the case of Sono-Fenton, the optimal concentrations were found to be 10 mg/L of Fe2+ and 400 mg/L of H2O2 at pH 2.5. Sono-Fenton method resulted in the reduction of required Fe2+ concentration (50%) and H2O2 concentration (31%). In addition, this method could be applicable even at pH 5.0 and a degradation efficiency of DCP was 77.6%. Kinetic studies for the degradation of DCP proved that the degradation of DCP tends to follow pseudo first order reaction and the rate constant was found to be 7×10-4 min-1.
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Boncz MA, Bruning H, Rulkens WH, Water Sci. Technol., 47, 17 (2003)
Contreras S, Rodriguez M, Momani AF, Sans C, Esplugas S, Water Res., 37, 3164 (2003)
Kavitha V, Palanivelu K, J. Envi. Sci. and Health, A38, 1215 (2003)
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Ince NH, Tezcanti G, Belen RK, Appl. Catal., 29, 167 (2001)
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Petrier C, Jeunet A, Luche JL, Reveredy G, J. Am. Chem. Soc., 114, 3148 (1992)
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Sedalk DL, Anders AW, Environ. Sci. Technol., 25, 777 (1991)
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Jeffery GH, Bassett J, Mendham J, Denny RC, Volgel’s textbook of quantitative chemical analysis (1998)
Kavitha V, Degradation of phenolic compounds in wastewater by Fenton processes, PhD. Thesis, Centre for Environmental Science, Anna University, Chennai (2003)
Makino K, Magdl M, Reise P, J. Phys. Chem., 87, 1369 (1983)
Minero C, Lucchiari M, Vione D, Maurino V, Environ. Sci. Technol., 39, 8936 (2005)
Hoffmann MR, Hua I, Hochemer R, Ultrasonics Sonochemistry, 2, 163 (1996)
Yasman Y, Bultov V, Gridin VV, Agur S, Galil N, Armon R, Schechter I, Ultrasonics Sonochemistry, 11, 365 (2004)
Puri BR, Sharma LR, Pathania SM, Principles of physical chemistry, Vishal publishing and co., Jalandhar (2002)
