净水技术Issue(1)：83-87,5.
UV／负载TiO2对微量磺胺甲恶唑的氧化降解效能
Performance of Oxidation and Degradation of Trace Sulfamethoxazole (SMX) with UV/Immobilized TiO2
摘要
Abstract
The immobilized TiO2 film loaded on fiberglass meshes was prepared by sol-gel method. Removal efficiency and influencing factors of sulfamethoxazole (SMX)by the combined process of UV and immobilized TiO2 were studied in detail through pilot test. Results show that SMX can be effectively oxidized by the UV/ immobilized TiO2 process and the first order reaction kinetics model can be used to simulate the oxidation process well. To a certain degree,degradation rate is affected by the initial concentration of SMX and water pH. Lower initial concentration and lower water pH both favor the degradation of SMX. The optimum concentration of H2 O2 for the system is found to be 10μg/L when initial concentration of SMX is 300μg/L. Furthermore,the existence of n-butyl alcohol and KI can reduce the degradation rate of the system on SMX. The reason is that n-butyl alcohol and KI compete with SMX for ·OH. The degradation test of actual water samples which the standard SMX is added to shows that SMX in source water is removed more easily than it in biochemical pool of sewage plant.关键词
紫外光催化氧化/负载TiO2/磺胺甲恶唑(SMX)/降解/影响因素Key words
UV catalytic oxidation/immobilized TiO2/sulfamethoxazole (SMX)/degradation/influencing factor分类
资源环境引用本文复制引用
朱浩强,刘成,汪斌,张程..UV／负载TiO2对微量磺胺甲恶唑的氧化降解效能[J].净水技术,2014,(1):83-87,5.基金项目
国家自然科学基金（51378174）；国家科技重大专项 （）
