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Received September 8, 2003
Accepted January 2, 2004
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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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Photocatalytic Decolorization of Rhodamine B by Fluidized Bed Reactor with Hollow Ceramic Ball Photocatalyst
Young-Soo Na
Do-Han Kim
Chang-Han Lee
Song-Woo Lee
Young-Seek Park1
You-Kwan Oh
Sung-Hoon Park
Seung-Koo Song†
Department of Chemical Engineering, Pusan National University, Jangjeon-dong, Geumjeong-gu, Busan 609-735, Korea 1Department of Environmental Hygiene, Daegu University, Daegu 705-714, Korea
sksong@pusan.ac.kr
Korean Journal of Chemical Engineering, March 2004, 21(2), 430-435(6), 10.1007/BF02705432
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Abstract
Photocatalytic degradation of organic contaminants in wastewater by TiO2 has been introduced in both bench and pilot-scale applications in suspended state or immobilized state on supporting material. TiO2 in suspended state gave less activity due to its coagency between particles. Recent advances in environmental photocatalysis have focused on enhancing the catalytic activity and improving the performance of photocatalytic reactors. This paper reports a preliminary design of a new immobilized TiO2 photocatalyst and its photocatalytic fluidized bed reactor (PFBR) to apply photochemical degradation of a dye, Rhodamine B (RhB). But it was not easy to make a cost-effective and well activated immobilized TiO2 particles. A kind of photocatalyst (named Photomedium), consisting of hollow ceramic balls coated with TiO2-sol, which was capable of effective photodegradation of the dye, has been presented in this study. The photocatalytic oxidation of RhB was investigated by changing Photomedia concentrations, initial RhB concentrations, and UV intensity in PFBR.
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References
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Kim JH, "Photooxidative Degradation of Rhodamine B using TiO2," M.S. Thesis, Pusan National University, 34-64, Korea (2001)
Lee JC, Kim MS, Kim CK, Chung CH, Cho SM, Han GY, Yoon KJ, Kim BW, Korean J. Chem. Eng., 20(5), 862 (2003)
Na YS, Lee TK, Lee SW, Lee CH, Kim DH, Park YS, Song SK, Environ. Sci., 10(S4), 157 (2001)
Nam WS, Kim JM, Han GY, Chemosphere, 47, 1019 (2002)
Nigam P, Banat IM, Singh D, Marchant R, Process Biochem., 31(5), 435 (1996)
Ollis DF, Pelizzetti E, Environ. Sci. Technol., 25, 1523 (1991)
Pozzo RL, Giombi JL, Baltanas MA, Cassano AE, Catal. Today, 62(2-3), 175 (2000)
Tang W, An H, Chemosphere, 31, 4157 (1995)
Turchi CS, Ollis DF, J. Catal., 122(1), 178 (1990)
Wang W, Ku Y, Chemosphere, 50, 999 (2003)
