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
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Chen, L. C. and Chou, T. C., “Kinetics of Photodecolorization of Methyl Orange Using Titanium Dioxide as Catalyst,”Ind. Eng. Chem. Res.,32, 1520 (1993).
Huang, C. P., Dong, C. and Tang, Z., “Advanced Chemical Oxidation: Its Present Role and Potential Future in Hazardous Waste Treatment,”Waste Manage, 13(5-7), 361 (1993).
Jardim, W. F., Moraes, S. G. and Takiyama, M.M. K., “Photocatalytic Degradation of Aromatic Chlorinated Compounds Using TiO2: Toxicity of Intermediates,”Water Res., 31(7), 1728 (1997).
Kim, J.H., “Photooxidative Degradation of Rhodamine B using TiO2,” M. S. thesis, Pusan National University, 34–64. Korea (2001).
Lee, J. C., Kim, M. S., Kim, C.K., Chung, C.H., Cho, S. M., Han, G.Y., Yoon, K. J. and Kim, B.W., “Removal of Paraquat in Aqueous Suspension of TiO2 in an Immersed UV Photoreactor,”Korean J. Chem. Eng.,20, 862 (2003).
Na, Y. S., Lee, T.K., Lee, S.W., Lee, C.H., Kim, D.H., Park, Y. S. and Song, S. K., “A Comparison of Efficiency of Decolorizing Rhodamine B using Lab-scale Photocatalytic Reactor: Slurry Reactor, IWCR and PFBR,”Environmental Sciences, 10(S-4), 157 (2001).
Nam, W. S., Kim, J. M. and Han, G.Y., “Photocatalytic Oxidation of Methyl Orange in a Three-phase Fluidized Bed Reactor,”Chemosphere,47, 1019 (2002).
Nigam, P., Banat, I.M., Singh, D. and Marchant, R., “Microbial Process for the Decolorization of Textile Effluent Containing Azo, Diazo and Reactive Dyes,”Process Biochemistry, 31(5), 435 (1996).
Ollis, D. F. and Pelizzetti, E., “Destruction of Water Contaminants,”Environ. Sci. Technol.,25, 1523 (1991).
Pozzo, R. L., Giombi, J. L., Batanas, M.A. and Cassano, A. E., “The Performance in a Fluidized Bed Reactor of Photocatalysts Immobilized onto Inert Supports,”Catalysis Today,62, 175 (2000).
Tang, W. and An, H., “UV/TiO2 Photocatalytic Oxidation of Commercial Dyes in Aqueous Solutions,”Chemosphere,31, 4157 (1995).
Turchi, C. S. and Ollis, D. F., “Photocatalytic Degradation of Organic Water Contaminants: Mechanisms Involving Hydroxyl Radical Attack,”J. Catal., 122(1), 178 (1990).
Wang, W. and Ku, Y., “The Light Transmission and Distribution in an Optical Fiber Coated with TiO2 Particles,”Chemosphere,50, 999 (2003).
Author information
Authors and Affiliations
Corresponding author
Additional information
This paper is dedicated to Professor Hyun-Ku Rhee on the occasion of his retirement from Seoul National University.
Rights and permissions
About this article
Cite this article
Na, YS., Kim, DH., Lee, CH. et al. Photocatalytic decolorization of rhodamine B by fluidized bed reactor with hollow ceramic ball photocatalyst. Korean J. Chem. Eng. 21, 430–435 (2004). https://doi.org/10.1007/BF02705432
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF02705432