零价铁法去除水体中萘普生:作用机制及产物毒性研究  

Removal of Naproxen from Water by Zero-valent Iron: Research on the Mechanism and Products Toxicity

作　　者：林龙利 刘国光[3] 张宇 翟先先 刘璟颢 张能 

机构地区：[1]贵州工程应用技术学院化学工程学院,贵州毕节551700 [2]贵州省煤基新材料工程中心,贵州毕节551700 [3]广东工业大学环境科学与工程学院,广州510006

出　　处：《工业安全与环保》2016年第2期12-15,共4页Industrial Safety and Environmental Protection

基　　金：国家自然科学基金(21377031);贵州省科学技术基金(黔科合J字[2013]2005号);贵州省高校优秀科技创新人才支持计划(黔教合KY字[2013]150);贵州省普通高等学校煤化工过程装备与控制创新团队项目(黔教合人才团队字[2015]73);毕节学院高层次人才科学研究项目(院科合字G2013005号)

摘　　要：为了探索水体中非甾体类药物处理新技术,对铁屑降解水体中萘普生的影响因素、作用机制和产物毒性进行了研究。首先考察了铁屑投加量、p H值、萘普生初始浓度及作用时间对降解效果的影响,确定了铁屑投加量为2.5 g/L,p H值为2.0,萘普生质量浓度为10.0 mg/L的反应条件有利于零价铁对萘普生有效降解,反应150 min去除率可达89.2%;然后对零价铁降解萘普生的反应机制进行研究,结果表明零价铁主要是通过腐蚀产物(新生态氢[H])直接还原作用,促使萘普生转化为其他物质;发光菌毒性实验表明萘普生转化为较母体具有更高生物风险的中间产物。In order to explore new processing technologies of non- steroidal drugs,the degradation of naproxen from aqueous solution by iron scraps has been studied,which includes influence factors,mechanism and toxicity evaluation of product. Firstly,the effects of dosages of iron scraps,p H value,initial concentration of naproxen and reaction time on degradation efficiency of naproxen are investigated,finding out that the removal rate of naproxen comes to 89. 2% in 150 mins when the the initial concentration of naproxen is 10. 0 mg / L,the dosage of iron scraps is 2. 5 g / L and p H is 2. 0. Then,the degradation mechanism of naproxen using iron scraps is studied,the results demonstrate that naproxen can be degraded effectively by iron scraps and naproxen is converted into other substances by the reduction of iron corrosion products（ [H]）. Finally,the toxicity evaluation illustrates that naproxen is formed into some intermediate products,more toxic than naproxen itself.

关 键 词：铁屑 萘普生 发光菌 毒性 

分 类 号：X52[环境科学与工程—环境工程]