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http://dx.doi.org/10.5322/JES.2002.11.6.589

Photodegradation of Organophosphorous Pesticides using TiO2 Photocatalyst Coated on Glass Plates in Circular Reactor  

류성필 (제주대학교 환경공학과)
오윤근 (제주대학교 환경공학과)
Publication Information
Journal of Environmental Science International / v.11, no.6, 2002 , pp. 589-596 More about this Journal
Abstract
Photocatalytic degradation of chlorpyrifos and diazinon, which are extensively used as an organophosphorous pesticide in the agriculture field, has been investigated with UV-radiated TiO$_2$ in aqueous phase. Photodegradation rate was increased with increasing pH of the solution. The removal efficiencies of chlorpyrifos and diazinon were 100% after 200 min in pH 9. Photodegradation followed a pseudo-first-order reaction. The rate constants of chlorpyrifos and diazinon were 0.0160min$\^$-1/ and 0.0180min$\^$-1/, respectively. NO$_3$$\^$-/, PO$_4$$\^$3-/, SO$_4$$\^$2-/ and Cl$\^$-/ were found as end products on the photocatalytic degradation of chlorpyrifos and diazinon with TiO$_2$/UV.
Keywords
TiO$_2$/UV; AOP; Chlorpyrifos; Diazinon;
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