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Journal of Chemistry
Volume 2014 (2014), Article ID 283496, 7 pages
http://dx.doi.org/10.1155/2014/283496
Research Article

Photodegradation of Trace Trichloronitromethane in Water under UV Irradiation

1School of Civil Engineering, Southeast University, Nanjing 210096, China
2School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang 212013, China
3School of Civil and Environmental Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA

Received 20 February 2014; Revised 4 June 2014; Accepted 24 June 2014; Published 14 July 2014

Academic Editor: Eva Pocurull

Copyright © 2014 Lin Deng 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.

Abstract

This study’s objective was to study the photodegradation of TCNM (trichloronitromethane) in water under UV light. The effects of light intensity, nitrate ions, chloride ions, humic acid, and pH on the photochemical degradation of TCNM were investigated under the irradiation of low pressure mercury lamp (λ = 254 nm, 12 W). The photodegradation rate of TCNM was found to increase with increasing the concentration of nitrate ions, chloride ions, humic acid, pH, and light intensity. The photodegradation of TCNM was examined at pH 6.0 with initial concentrations ( ) of TCNM at 10.0–200.0 µg/L. The overall rate of degradation of TCNM was modeled using a pseudofirst-order rate law. Finally, the proposed mechanism involved in the photodegradation of TCNM was also discussed by analysis. Results of this study can contribute to the development of new source control strategies for minimization of TCNM risk at drinking water and wastewater utilities.