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Photo-Fenton degradation of alachlor, atrazine, chlorfenvinphos, diuron, isoproturon and pentachlorophenol at solar pilot plant
by M.I. Maldonado Rubio, W. Gernjak, I. Oller Alberola, J. Blanco Galvez, P. Fernandez-Ibanez, S. Malato Rodriguez
International Journal of Environment and Pollution (IJEP), Vol. 27, No. 1/2/3, 2006

 

Abstract: Homogeneous photocatalysis by photo-Fenton processes has been applied to the degradation of six water-soluble pesticides (alachlor, atrazine, chlorfenvinphos, diuron, isoproturon and pentachlorophenol), considered priority substances by the European Union Water Framework Directive (Directive 2000/60/EC). All tests were performed in a 35-L solar pilot plant with compound parabolic collectors (CPCs) under natural sunlight. The initial concentration tested for all the compounds was 50 mg/L except for those less soluble in water. Two different concentrations of iron were tested, 2 mg/L and 1 mM. All pesticides were successfully degraded and substantially mineralised. Total dechlorination was clearly attained more quickly than 90% of mineralisation in all cases. Several operating parameters, treatment time, hydrogen peroxide consumption and iron concentration, involved in the degradation of the parent compounds and their mineralisation are discussed.

Online publication date: Mon, 24-Jul-2006

 

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