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Advances in Materials Science and Engineering
Volume 2012, Article ID 510123, 5 pages
Research Article

Optimization of Nano- T i O 𝟐 Photocatalytic Reactor for Organophosphorus Degradation

1Department of Chemical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Hafez Ave., P.O. Box 15875-4413, Tehran, Iran
2Department of Civil Engineering, University of Science and Technology, Tehran, Iran
3Department of Polymer Engineering, Islamic Azad University, Omidiyeh Branch, Khuzestan, Iran

Received 5 January 2012; Revised 14 February 2012; Accepted 20 February 2012

Academic Editor: Guohua Jiang

Copyright © 2012 Ilin Sadeghi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The photocatalytic decontamination of triethyl phosphate (TEP) is studied by the UV/nano-TiO2 process. The nano-TiO2 concentration and pH value for the complete oxidation of TEP were investigated in different concentrations of TEP. The kinetic reaction was calculated for TEP as a function of initial concentration of TEP. Results of adsorptions showed that TEP was adsorbed better in alkalinity pH, and the natural pH had the highest reaction rate for complete degradation. Also, the zero-kinetic order with the lag time as a function of initial concentration of TEP and TiO2 was suggested for oxidation of TEP. The optimized concentration of nano-TiO2 was 400 mg/lit which had the best conversion and the lowest lag time in the reaction.