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Received April 29, 2010
Accepted July 28, 2010
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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
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Lumped-intermediates analysis in the photooxidation of Rhodamine 6G in the H2O2/UV system
Department of Chemical Engineering and Environment, University School of Mining and Civil Technical Engineering, University of the Basque Country, Colina Beurko, s/n. 48902, Barakaldo (Bizkaia), Spain 1Department of Chemical Engineering, University of the Basque Country, P.O. Box 644, 48080, Spain
amaia.menendez@ehu.es
Korean Journal of Chemical Engineering, February 2011, 28(2), 388-395(8), 10.1007/s11814-010-0392-3
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Abstract
The combination of H2O2 with UV radiation was applied to study the degradation of Rhodamine 6G dye (Rh-6G). The lumped kinetic model proposed in this work is a reaction-system scheme to describe the degradation of dye using lumps of intermediate compounds grouped by their chemical and colorimetric behavior. Rate constants obtained by application of the model were shown to predict the progress of dye oxidation. The effects of pH and oxidant dosage on these rate constants were also analyzed. Finally, photodecoloration was studied considering the absorption at 528 nm (the maximum absorption wavelength of the dye) as the sum of all compounds absorbing at this wavelength: Rhodamine itself and the colored intermediates produced.
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Malik PK, Sanyal SK, Sep. Purif. Technol., 36(3), 167 (2004)
Donlagic J, Levec J, AIChE J., 45(12), 2571 (1999)
Zhang QL, Chuang KT, AIChE J., 45(1), 145 (1999)
Verenich S, Kallas J, Environ. Sci. Technol., 36, 3335 (2002)
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Wua CH, Chang CL, J. Hazard. Mater., B128, 265 (2006)
Behnajady MA, Modirshahla N, Fathi H, J. Hazard. Mater., B136, 816 (2006)
Aleboyeh A, Aleboyeh H, Moussa Y, Dyes Pigments., 57, 67 (2003)
Gozmen B, Kayan B, Gizir AM, Hesenov A, J. Hazard. Mater., 168(1), 129 (2009)
Guimaraes OLC, Villela DN, Siqueira AF, Izario HJ, Silva MB, Chem. Eng. J., 141(1-3), 35 (2008)
Gaikwad RW, Kinldy SAM, Korean J. Chem. Eng., 26(1), 102 (2009)
Elmorsi TM, Riyad YM, Mohamed ZH, Abd El Bary HMH, J. Hazard. Mater., 174, 352 (2010)
Belkacemi K, Larachi F, Sayari A, J. Catal., 193(2), 224 (2000)
Azevedo EB, de Aquino Neto FR, Dezotti M, J. Hazard.Mater., B128, 182 (2006)
Chu W, Ma CW, Chemosphere., 37, 961 (1998)
Arslan I, Balcioglu IA, J. Chem. Technol. Biotechnol., 76(1), 53 (2001)
Mansoori RA, Kothari S, Ameta R, Arab. J. Sci. Eng., 29(1A), 11 (2004)
Crittenden JC, Hu S, Hand DW, Green SA, Water Res., 33(19), 2315 (1999)
Shu HY, Chang MC, Hsieh WP, J. Hazard. Mater., B128, 60 (2006)
AlHamedi FH, Rauf MA, Ashraf SS, Desalination, 239(1-3), 159 (2009)
Xu B, Gao NY, Cheng HF, Xia SJ, Rui M, Zhao DD, J. Hazard. Mater., 162(2-3), 954 (2009)
de Luis A, Lombrana JI, Varona F, Menendez A, Korean J. Chem. Eng., 26(1), 48 (2009)
