Efficiency and Mechanism of Degradation of 2-Methylisoborneol(2-MIB) by O3/H2O2 in Water
The research on efficiency and mechanism of removing the odor compound 2-MIB in water is performed by adopting the O3/H2O2 technology. And in particular, the effects of addition manner, mol ratio, pH value of the solution and water quality etc, on the 2-MIB degradation are studied. And the intermediate products in the oxidative degradation of 2-MIB were analyzed by GC/MS. It is found that H2O2 can evidently promote the ozonation of 2-MIB in water by O3. The degrading ratio of 2-MIB is 38.7% with O3 separately oxidizing for 20min, and the degrading ratio of 2-MIB rises to 89.2% by adding adequate H2O2 in the same system. The optimal adding mol ratio of H2O2 to O3 is about 0.6. A small amount of humic acid evidently promotes the degrading ratio of 2-MIB in O3/H2O2 system. However, humic acid of high concentration significantly inhibits the oxidation process. The free radical scavenger, tertiary-butanol obviously inhibits the degradation of 2-MIB in O3/H2O2 system. It is identified that the oxidation products of 2-MIB by GC/MS include 4-Hydroxy-1,7,7-trimethylbicyclo 2.2.1heptan-2-one, 1,7,7-Trimethylbicyclo 2.2.1 heptane-2,5-dione, 1,7,7-Trimethylbicyclo2.2.1 heptan-2 -one etc. The mechanism of the whole oxidation process is deduced.
Xueyan Li Yong Huang Dongtian Wang
School of Environmental Science &Technology Suzhou University of Science and Technology Suzhou, China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）