Title: Effects of dissolved organic matter in landfill leachate on photodegradation of environmental endocrine disruptors

Authors: Cai Xiang Zhang, Yan Xin Wang

Addresses: MOE Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China. ' MOE Key Laboratory of Biogeology and Environmental Geology, China University of Geosciences, Wuhan 430074, China

Abstract: The direct and indirect photolysis of Environmental Endocrine Disruptors (EEDs) was investigated with and without Dissolved Organic Matter (DOM) extracted from landfill leachates. The results indicate that degradation of EEDs followed a pseudo-first-order. Photosensitised transformation of EEDs occurred because of the light absorption of DOM under sunlight irradiation while distinctive retardation effects were observed under UV/TiO₂ irradiation, which is related to the structure and concentration of DOM. These results reported here have significance not only to the design of a practical photocatalysed oxidation system, but also to the selection of a feasible and effective wastewater treatment technique.

Keywords: DOM; dissolved organic matter; EEDs; environmental endocrine disruptors; photodegradation; TiO2; titanium dioxide; landfill leachate; irradiation; photocatalysed oxidation; wastewater treatment.

DOI: 10.1504/IJEP.2011.039086

International Journal of Environment and Pollution, 2011 Vol.45 No.1/2/3, pp.69 - 80

Published online: 29 Apr 2015 *

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