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Degradation of diethyl phthalate (DEP) in aqueous solution using TiO2/UV process

Abstract Diethyl phthalate (DEP) has been classified as an endocrine disruptor pollutant. The degradation of DEP C12H14O4, in aqueous solution by TiO2-UV process was optimized using high pressure mercury lamp. Effects of TiO2 dosage and type, and pH values on the degradation of DEP by TiO2/UV process were investigated. The optimal TiO2 dosage and pH value for the DEP degradation were 1 g l−1 and 7.0, respectively using TiO2 P25. The degradation rate of DEP by TiO2/UV process under optimal conditions reach 78.6% and could be fitted first-order kinetics.