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

Publication history: Received September 30, 2003
Accepted February 10, 2004

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-degradation Characteristics of TCE (Trichloroethylene) in an Annulus Fluidized Bed Photoreactor

Tak Hyoung Lim Sang Done Kim^†

Department of Chemical & Biomolecular Engineering and Energy & Environment Research Center, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea

kimsd@kaist.ac.kr

Korean Journal of Chemical Engineering, July 2004, 21(4), 905-909(5), 10.1007/BF02705538

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Abstract

The effects of gas velocity, annulus gap on solid (ε_s) and gas phase holdups (ε_g), UV light transmittance and photocatalytic reduction of TCE (trichloroethylene) over TiO₂/silica gel photocatalyst have been determined in an annulus fluidized bed photoreactor. The optimum TCE reduction efficiency exhibits at ε_s/ε_g of 0.48, annulus gap of 8 mm and UV light transmittance around 0.20. The most pronounced effects on TCE conversion are found to be gas velocity (U_g) and annular gap in the photoreactor.

Keywords

Gas Velocity Annulus Gap Annulus-fluidized Bed TCE Reduction

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