Abstract
Photocatalytic oxidation of pesticides in aqueous media irradiated by UV light is a rapidly growing field of research. Therefore, the treatment technology for degradation of propoxur (an insecticide) using titanium dioxide coated on the supports such as activated carbon, zeolite, brick, quartz and glass beads, was performed in this research. Results show that GAC/TiO 2 is the best complexing agent for oxidizing propoxur because of its adsorption properities.The others follow the sequence: plain TiO 2 > glass beads > zeolite > brick > quartz. The degradation rate of propoxur with plain TiO 2 is higher than that with TiO 2/GAC complexing agent.But the mineralization rate of propoxur with plain TiO 2 is lower than that with TiO 2/GAC complexing agent. However, it can be concluded that using GAC as the support can improve the photocatalytic efficiency
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