安徽农业科学2012，Vol.40Issue(4)：2154-2156,2250,4.
非均相UV/Fenton光催化降解土霉异味研究
Study on Degradation of Musty-earthy Odors by Heterogeneous UV/Fenton Photocatalysis
摘要
Abstract
[Objective] The study aimed to explore the effects of the heterogeneous UV/Fenton photocatalysis on the degradation of the musty-earthy odors. [ Result] By using ion exchange method, the Fe2+ was loaded on the NaY molecular sieve carrier to prepare the catalyst FeY. Under the radiation of different ultraviolet wavelengths, 2 musty-earthy odor materials of 2-Methylisobomeol ( MIB) and trans-1, 10-dimethyl-trans-9-decalol (Geosmin) were degraded by using Fenton reaction, the degradation conditions such as pH and H2O2 were optimized and the MIB and Geosmin were added to the bottom of East Lake for the degradation. [ Conclusion] The FeY loading amount was 352.8 mg/g and the Fe2+ desorption rate was 5. 7%. The heterogeneous UV/Fenton system had the degradation rate of 80. 2% and 84. 9% resp. On MIB and Geosmin under the test conditions as FeY of 28 mg, pH of 6.5, H2O2 of 20 mg/L and reaction time of 60 min. Under the UVA, UVB and UVC wavelengths of 365 ,312 and 256 nm, resp. , the degradation rate of the Photo-Fenton system on MIB and Geosmin were increased with the reduction of the ultraviolet wavelengths and the degradation rate constant of Geosmin was higher than that of MIB. The degradation of MIB and Geosmin added to the natural water of the lake showed that, their degradation rate was obviously lower than that in the pure water sample. [Conclusion] The catalyst prepared in the study, when used in the homogeneous light catalytic system, could not only be recycled, but also expand the application range of pH value in the reaction system.关键词
非均相/UV/Fenton/降解/土霉异味/MIB/GeosminKey words
Heterogeneous/ UV/Fenton/ Degradation/ Musty-earthy odors/ MIB/ Geosmin分类
资源环境引用本文复制引用
刘立明,李林,闪锟,黄应平,宋立荣..非均相UV/Fenton光催化降解土霉异味研究[J].安徽农业科学,2012,40(4):2154-2156,2250,4.基金项目
国家重点基础研究发展计划资助项目(2008CB418101,2008CB418006) （2008CB418101,2008CB418006）
国家自然科学基金资助项目(20807055,U0833604) （20807055,U0833604）
中国科学院知识创新工程青年人才领域前沿项目 （）
