Kinetics of quinoline degradation by O3/UV in aqueous phase.
The kinetics of quinoline degradation by O3/UV in aqueous phase was studied in this paper. It was found that the stoichiometric factor for the number of ozone molecule consumed by per quinoline molecule was 1. The second-order rate constants at 15 degrees C for the direct reaction of quinoline with ozone and that for the reaction of quinoline with *OH were determined to be 51.0 and 7.24 x 10(9) M(-1)s(-1), respectively. In O3/UV reaction system, *OH was the more important oxidant to degrade quinoline than ozone. For a comparison, in O3 reaction system, the relative importance of the two oxidants depended on the pH value greatly. To make the degradation of quinoline more practical, improvement of the concentration of *OH is more feasible.
Wang
Xiaomao
X
Department of Environmental Science and Engineering, Environment Simulation and Pollution Control State Key Joint Laboratory, Tsinghua University, Beijing 100084, People's Republic of China. xhuang@tsinghua.edu.cn
Huang
Xia
X
Zuo
Chenyan
C
Hu
Hongying
H
D017665:Hydroxyl Radical / Q000737:chemistry; D007700:Kinetics; D010084:Oxidation-Reduction; D010126:Ozone / Q000737:chemistry*; D010782:Photolysis / Q000528:radiation effects; D011804:Quinolines / Q000737:chemistry*; D014466:Ultraviolet Rays; D014867:Water / Q000737:chemistry
D011804:Quinolines; D014867:Water; D017665:Hydroxyl Radical; D010126:Ozone; C037219:quinoline