화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.28, No.2, 388-395, February, 2011
DOI10.1007/s11814-010-0392-3  Export Citation
Lumped-intermediates analysis in the photooxidation of Rhodamine 6G in the H2O2/UV system
Amaia Menendez†, Jose I. Lombrana1, and Ana de Luis
  • 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
E-mail:
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.
Keywords:Lumped Kinetic Model;H2O2/UV;Rhodamine 6G;Decoloration;Dye
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