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Acta Physico-Chimica Sinica  2001, Vol. 17 Issue (11): 1000-1005    DOI: 10.3866/PKU.WHXB20011109
Kinetics Modeling Study on Continuous Circulative Flow Immobilized Photocatalytic Reactor
Fan Shan-Hu;Yu Xiang-Yang;Zhan She-Xia;Chen Liu-Ping;Gu Xi-Lan;Li Yu-Guang;Shi Zhong-Bing
College of Chemistry and Chemical Engineering,Zhongshan University,State Key Laboratory of Ultrafast Laser Spectroscopy Zhongshan University,Guangzhou 510275;Research Institute of Environmental Protection Sciences of Guangzhou,Guangzhou 510300
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Abstract  The kinetic process in a tubular continuous-flow photo-reactor equiped with titanium dioxide immobilized on glass fiber-net has been studied by using methyl orange as a model reactant.The process has been described carefully,and modeled by using dynamic partial differential equation.Since the solution of the equation was complicated,the numerical solution has been undertaken by using a fourth-order Runge-Kutta scheme.The results show that the mathematical simulated values are consistent with the experimental data.Under the condition of different treated reactant amount the actual reaction rate constant k is approximately identical,but the apparent reaction rate constant kapp decreases with increasing treatment of reactant amount.The initial concentration has a great influence upon the rate constant.Below 15 μmol•L-1 of the initial concentration the rate constant tends to be a constant.In the range of 15~150 μmol•L-1,the influence of the initial concentration on the reaction rate constant can be expressed as:lnk=-0.48lnc0+1.42.The dependence of reaction rate constant on UV irradiation intensity is k∝I 0.5.The pH of initial solution is an important factor in the photocatalysis reaction.

Key wordsImmobilized bed      Photocatalysis      Kinetics      Mathematical simulation     
Received: 29 April 2001      Published: 15 November 2001
Corresponding Authors: Li Yu-Guang     E-mail:
Cite this article:

Fan Shan-Hu;Yu Xiang-Yang;Zhan She-Xia;Chen Liu-Ping;Gu Xi-Lan;Li Yu-Guang;Shi Zhong-Bing. Kinetics Modeling Study on Continuous Circulative Flow Immobilized Photocatalytic Reactor. Acta Physico-Chimica Sinica, 2001, 17(11): 1000-1005.

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