title: [Oxidative efficiency of the system of electrolysis coupled ozonation].
abstract: The oxidation system of electrolysis coupled ozonation (electrolysis-ozonation) was used to degrade 4-chlorophenol (4-CP), and its mechanism was discussed on the basis of kinetic analysis. The experimental results indicated the electrolysis-ozonation system had a significant synergistic effect during degradation of 4-CP. For example, the electrolysis-ozonation had the 4-CP removal rate of 92.7% and the COD removal rate of 64.9% in 900 s, respectively; while electrolysis alone plus ozonation alone only had the 4-CP removal rate of 69.7% and the COD removal rate of 30.1% under the same conditions. The results of H2O2 concentration analysis and photocurrent test showed that the synergistic mechanism of electrolysis-ozonation included two factors: (1) production of *03- at the cathode; (2) H2O2 generation resulting from reduction of dissolved oxygen. The above two factors led to generation of *OH in system effectively.
authors.affiliation: State Key Laboratory Breeding Base of Green Chemistry-Synthesis Technology, College of Chemical Engineering and Materials Science, Zhejiang University of Technology, Hangzhou 310032, China. aixinai@163.com
authors.forename: Qi
authors.initials: Q
authors.lastname: Zhou
authors.forename: Rong
authors.initials: R
authors.lastname: Zhang
authors.forename: Xun-Hua
authors.initials: XH
authors.lastname: Wang
authors.forename: Shao-Ping
authors.initials: SP
authors.lastname: Tong
authors.forename: Chun-An
authors.initials: CA
authors.lastname: Ma
mesh_terms: D002733:Chlorophenols / Q000737:chemistry*; D004563:Electrochemistry / Q000379:methods; D004572:Electrolysis; D007700:Kinetics; D010084:Oxidation-Reduction; D010126:Ozone / Q000737:chemistry*; D014874:Water Pollutants, Chemical / Q000737:chemistry*; D018508:Water Purification / Q000379:methods*
chemical_list: D002733:Chlorophenols; D014874:Water Pollutants, Chemical; C029107:4-chlorophenol; D010126:Ozone