title: Degradation of 2,4-dichlorophenoxyacetic acid in water by ozone-hydrogen peroxide process.
abstract: This study reports an investigation into the degradation of 2,4-dichlorophenoxyacetic acid in bubble contactor column by O3/H2O2 process, which is widely used as a principal advanced oxidation process. The degradation of 2,4-dichlorophenoxyacetic acid was studied under different H2O2/03 molar ratio and pH value. Meanwhile, TOC removal was investigated both in distilled water and tap water. The influences of ozone transfer and consumed hydrogen peroxide were also discussed. The degradation products and oxidation intermediates were identified by GC-MS and LC-MS. A possible reaction mechanism was thus proposed.
authors.affiliation: School of Municipal and Environmental Engineering, Harbin Institute of Technology, P.O. Box 2627, Harbin 150090, China. yuyinghui111@yahoo.com.cn
authors.forename: Ying-hui
authors.initials: YH
authors.lastname: Yu
authors.forename: Jun
authors.initials: J
authors.lastname: Ma
authors.forename: Yan-jun
authors.initials: YJ
authors.lastname: Hou
mesh_terms: D015084:2,4-Dichlorophenoxyacetic Acid / Q000737:chemistry*; D002851:Chromatography, High Pressure Liquid; D008401:Gas Chromatography-Mass Spectrometry; D006861:Hydrogen Peroxide / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D015394:Molecular Structure; D010084:Oxidation-Reduction; D010126:Ozone / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D014867:Water; D015084:2,4-Dichlorophenoxyacetic Acid; D010126:Ozone; D006861:Hydrogen Peroxide