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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received June 19, 2009
Accepted July 28, 2009

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 unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Photo-catalytic degradation of rhodamine B using microwave powered electrodeless discharge lamp

Jeong-Seok Chae Dong-Suk Jung Yeong-Seon Bae Sung Hoon Park Do-Jin Lee¹ Sun-Jae Kim² Byung Hoon Kim³ Sang-Chul Jung^†

Department of Environmental Engineering, Sunchon National University, Sunchon 540-742, Korea ¹Department of Agricultural Education, Sunchon National University, Sunchon 540-742, Korea ²Department of Nano Science and Technology, Sejong University, Seoul 143-747, Korea ³Department of Dental Materials, School of Dentistry, MRC Center, Chosun University, Gwangju 501-759, Korea

jsc@sunchon.ac.kr

Korean Journal of Chemical Engineering, February 2010, 27(2), 672-676(5), 10.1007/s11814-010-0060-7

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Abstract

A microwave discharge electrodeless lamp (MDEL) was used as the light source for microwave assisted TiO2 photo-catalysis to degrade rhodamine B. A MDEL filled with low pressure mercury gas has been developed for the photo-catalytic treatment of water pollutants over TiO2 balls. TiO2 balls produced by the chemical vapor deposition method were used. The degradation reaction rate was shown to be higher with higher microwave intensity and with a larger amount of O2 gas addition. The effect of addition of H2O2 was not significant when photo-catalysis was used_x000D_ without additional microwave irradiation or when microwave was irradiated without the use of photo-catalysts. When H2O2 was added under simultaneous use of photo-catalysis and microwave irradiation, however, considerably higher degradation reaction rates were observed. This result suggests that there is a synergy effect when the constituent techniques are applied together.

Keywords

Photo-catalyst Microwave UV Dye Chemical Vapor Deposition

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