表面改性GOT/PVDF超滤膜的制备及对水中微污染物的去除  

Fabrication of surface modified GOT/PVDF ultrafiltration membrane and its removal of micro-pollutants from aqueous solution

作　　者：刘立言 裴杨 龙明策[1] 邵嘉慧[1] 何义亮[1] LIU Liyan PEI Yang LONG Mingce SHAO Jiahui HE Yiliang(School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, Chin)

机构地区：[1]上海交通大学环境科学与工程学院,上海200240

出　　处：《环境工程学报》2017年第10期5381-5386,共6页Chinese Journal of Environmental Engineering

基　　金：国家自然科学基金资助项目(21277090);国家重点科技项目水专项(2014ZX07206001)

摘　　要：以氧化石墨烯-二氧化钛(GOT)纳米复合物作为亲水化改性剂,通过动态过滤法对聚偏氟乙烯(PVDF)超滤膜进行改性,得到GOT/PVDF改性膜。分别选用腐殖酸(HA)、磺胺嘧啶(SDZ)作为水中微污染物的代表物质,研究了改性膜在不同光照条件下对HA及SDZ的去除行为,同时考察了膜表面GOT的稳定性。结果表明:GOT/PVDF改性膜能提高对水中天然有机物的去除并控制膜污染;在光催化条件下,GOT/PVDF膜能够去除98.3%的SDZ,远高于黑暗条件下31.8%的去除率。The graphene oxide-TiO_2 （GOT）/polyvinylidene fluoride （PVDF） ultrafiltration membranes were fabricated by coating GOT on PVDF membrane surface via dynamic filtration method.Humic acid （HA） and sulfadiazine （SDZ） were chosen as representatives of micro-pollutants in aqueous solution.The removal and membrane fouling of GOT/PVDF membranes were investigated during filtration of HA and SDZ under different light conditions.The stability of GOT on membrane surface was also studied.Results indicated that GOT/PVDF membrane could improve the removal of humic acid and reduce membrane fouling simultaneously.In photocatalytic ultrafiltration,98.3% of SDZ was removed with GOT/PVDF membrane,which is much higher than the removal rate of 31.8% under dark condition.

关 键 词：表面改性 超滤 光催化 膜污染 微污染物 

分 类 号：X703.1[环境科学与工程—环境工程]