Tham khảo tài liệu 'insecticides basic and other applications part 4', khoa học tự nhiên, công nghệ sinh học phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Photoremediation of Carbamate Residues in Water 49 Various carbofuran photodegradation processes by ozon UV photolysis Fenton O3 UV UV H2O2 and photo-Fenton upon polychromatic UV irradiation were evaluated Benitez et al. 2002 . For all these reactions the apparent pseudo-first-order rate constants are evaluated in order to compare the efficiency of each process. The most effective process in removing carbofuran from water was the photo-Fenton system UV Fe2 H2O2 with rate constants k from x 10 4 s to x 10 4 s. The degradation of pure carbofuran and commercial product Furadan 4F in acidic aqueous solution upon polychromatic light 300-400 nm by photo-assisted Fenton process has been studied Huston Pignatello 1999 . The complete conversion of x 10-4 M of pure carbofuran and more than 90 TOC reduction in the water solution within 120 min has been achieved. Nitrate and oxalate ions were detected as organic ionic species after the treatment. Also the results show that the adjuvants in Furadan 4F have little or no influence on degradation of carbofuran nor of TOC mineralization. Two different Advanced oxidation processes photo- and electro-Fenton have been used for photodegradation of carbofuran in water Kesraoui Abdessalem et al. 2010 . For the photo-Fenton process TOC removal ratio was influenced by the initial concentration of the pesticides and the amout of Fe3 and H2O2. The TOC measurement indicate an efficient mineralization of 93 and 94 respectively for photo- and electro-Fenton processes after 480 min of treatment. Carbofuran could not be mineralized on AlFe-PILC and Fe-ZSM-5 zeolite catalysts in the heterogeneous photo-Fenton reactions at nm even in the catalytic reaction promoted at high temperature Tomasevic et al. 2007a 2007b . Ethiofenocarb Ethiofencarb IUPAC name x-ethythio-x-tolyl methylcarbamate is systemic insecticide with contact and stomach action. It is applied for control of aphids on pome fruit stone fruit and soft fruit than
