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標題: The kinetics of photocatalytic degradation of trichloroethylene in gas phase over TiO2 supported on glass bead
作者: Wang, K.H.
Tsai, H.H.
Hsieh, Y.H.
關鍵字: photocatalysis;titanium dioxide;trichloroethylene;heterogeneous photocatalysis;air;oxidation
Project: Applied Catalysis B-Environmental
期刊/報告no:: Applied Catalysis B-Environmental, Volume 17, Issue 4, Page(s) 313-320.
In this investigation, a packed bed filled with coated titanium dioxide glass beads to study the kinetics of photocatalytic degradation of trichloroethylene under irradiation of 365 nm UV light. In the range of 100-500 ml/min of flowrate, the reaction rate for 6 mu M TCE increased with an increasing flowrate upto 300 ml/min, while was not affected by the flowrate at the values higher than 300 ml/min. For moisture in the range of 9.4-1222.2 mu M, the reaction rate of TCE was decreased with an increasing humidity. The adsorbed water on the catalyst surface could compete with the adsorption of TCE on the sites. The reaction rate of 6 mu M TCE increased as the Light intensity increased, and was proportional to the 0.61 order of the light intensity. Among the three L-H bimolecular form models, the experimental data had the best fit for one of models: r = k[K1Cr/(1 + K1Cr + K2Cw)][K4Cw/(1 + K3Cr + K4Cw)] (C) 1998 Elsevier Science B.V. All rights reserved.
ISSN: 0926-3373
DOI: 10.1016/s0926-3373(97)00099-4
Appears in Collections:環境工程學系所

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