Removal of Malathion from Various Waters by Advanced Oxidation Processes

Fadaei, A.M. and Kargar, M. (2015) Removal of Malathion from Various Waters by Advanced Oxidation Processes. Journal of the Chemical Society of Pakistan, 37 (1).

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Abstract

Summary: The degradation of malathion was investigated under various conditions, including ultrasound (US) irradiation, ultraviolet (UV) irradiation, and the combination of US/UV, UV/ZnO, UV/H2O2, and US/UV/ZnO/H2O2. In addition, the effect of the operational parameters, such as the initial concentration of the catalyst, the initial malathion concentration, the initial salt concentration (NaHCO3 and Na2SO4), and pH, were studied. Analyses were performed by a gas chromatographymass spectroscopy instrument. The k values were in the following order: US/UV/H2O2/ZnO > US/UV > UV/ZnO> UV/H2O2 > UV > US. ZnO concentration of 100 mg/l, malathion initial concentration of 200 µg/l, H2O2 concentration of 30 mg/l, pH of 9, and irradiation time of 105 min were the optimum conditions for degrading malathion by the US/UV/H2O2/ZnO system. Additionally, the optimized parameters were also tested for the treatment of an actual water sample containing the pesticide. As a result, the efficiency of the US/UV/H2O2/ZnO system was higher in the distilled water sample than in the actual water sample.

Item Type: Article
Uncontrolled Keywords: Malathion; Advanced oxidation processes; Water.
Subjects: WA Public Health > Public Health Education WA.18 > WA 30 Social, Economic, and Environmental factor in public health
WA Public Health > WA 30 Social, Economic, and Environmental factor in public health
Divisions: Faculty of Health > Department of Environmental Health
Depositing User: zahra bagheri .
Date Deposited: 12 Dec 2017 08:52
Last Modified: 12 Dec 2017 08:52
URI: http://eprints.skums.ac.ir/id/eprint/6597

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