title: The role of UV-irradiation pretreatment on the degradation of 2,4-dichlorophenoxyacetic acid in water.
abstract: The degradation of 2,4-dichlorophenoxyacetic acid (2,4-D) in water by the combination process of UV-irradiation, humic acids and activated sludge treatment has been studied. The photoreaction rate of all irradiated samples was lowest for the sample irradiated at 308 nm (the XeCl excilamp) in the absence and in the presence of humic acids, and highest for the sample irradiated at 222 nm (the KrCl excilamp). Photolysis of 2,4-D has been shown to enhance the subsequent microbial degradation.
authors.affiliation: Tomsk State University, 36, Lenine Ave, Tomsk, 634050, Russia. tchon@phys.tsu.ru
authors.forename: O
authors.initials: O
authors.lastname: Tchaikovskaya
authors.forename: I
authors.initials: I
authors.lastname: Sokolova
authors.forename: G V
authors.initials: GV
authors.lastname: Mayer
authors.forename: E
authors.initials: E
authors.lastname: Karetnikova
authors.forename: E
authors.initials: E
authors.lastname: Lipatnikova
authors.forename: S
authors.initials: S
authors.lastname: Kuzmina
authors.forename: D
authors.initials: D
authors.lastname: Volostnov
mesh_terms: D015084:2,4-Dichlorophenoxyacetic Acid / Q000737:chemistry* / Q000378:metabolism; D001419:Bacteria / Q000378:metabolism*; D001673:Biodegradation, Environmental; D052918:Environmental Restoration and Remediation / Q000379:methods*; D006540:Herbicides / Q000737:chemistry* / Q000378:metabolism; D007700:Kinetics; D010782:Photolysis / Q000528:radiation effects*; D014466:Ultraviolet Rays; D014874:Water Pollutants, Chemical / Q000737:chemistry* / Q000378:metabolism
chemical_list: D006540:Herbicides; D014874:Water Pollutants, Chemical; D015084:2,4-Dichlorophenoxyacetic Acid