γ-射线辐照催化降解水溶液中萘普生  

CATALYTIC DEGRADATION OF NAPROXEN IN AQUEOUS SOLUTIONS BY GAMMA-RAY IRRADIATION

作　　者：郑宾国[1,2] 牛俊玲[2] 郑正[3] 张继彪[3] 罗兴章[3] 赵永富[1] 王家齐[1] 

机构地区：[1]南京大学环境学院,污染控制与资源化研究国家重点实验室,南京210046 [2]郑州航空工业管理学院资源与环境研究所,郑州450015 [3]复旦大学环境科学与工程系,上海200433

出　　处：《环境化学》2011年第12期2022-2025,共4页Environmental Chemistry

基　　金：国家自然科学基金项目(11075039);国家“十一五”重大水专项(2008ZX07101-004)资助

摘　　要：利用60Co产生的γ-射线辐照水溶液中萘普生,研究了萘普生的降解特性.通过测定辐射后萘普生的浓度,探讨了吸收剂量、溶液pH、不同添加物(H2O2,CO23-,t-BuOH)对萘普生降解效果的影响.结果表明,γ-射线辐照能有效催化降解水溶液中的萘普生,降解过程符合准一级动力学方程.萘普生浓度为23.6 mg.L-1,吸收剂量为1.0 kGy时,萘普生去除率可达98%;0.5%H2 O2促进了辐照对萘普生的催化降解,而1.5%H2O2抑制了萘普生的降解;CO32-和t-BuOH抑制了辐照对萘普生的催化降解.Catalytic degradation of naproxen in aqueous solution by ~~Co gamma-ray irradiation was studied. lhe influence of absorption dose, solution pH, the presence of additives （H202, CO^- and t-BuOH） on the degradation of naproxen were investigated. The results showed that gamma-ray irradiation was able to degrade naproxen in aqueous solutions successfully, and the radiolytic degradation of naproxen was in accordance with the pseudo-first-order kinetic model. When naproxen concentration of 23.6 mg＂ L-1 and an absorption dose of 1.0 kGy were chosen, naproxen degradation rate was 98%. The presence of 0.5% H^O2 enhanced the degradation process,however, 1.5% H202 additive inhibited the degradation of naproxen. Additives such as CO^- and t-BuOH also inhibited the degradation process.

关 键 词：萘普生 γ-射线 辐照 催化降解 

分 类 号：X52[环境科学与工程—环境工程]