新型GOT/PVDF改性膜对水中污染物的去除  

Pollutants Removal from Water by a Novel GOT/PVDF Modified Membrane

作　　者：费宇环 苏晨 林振霄 徐云帆 龙明策[1] 邵嘉慧[1] FEI Yuhuan;SU Chen;LIN Zhenxiao;XU Yunfan;LONG Mingce;SHAO Jiahui(School of Environmentol Science and Engineering,Shanghai Jioo Tong University,Shangghai 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：《水处理技术》2018年第8期71-75,共5页Technology of Water Treatment

基　　金：国家重点科技项目水专项(2014ZX07206001);国家自然基金重点项目(21737002)

摘　　要：通过水热反应法制备氧化石墨烯-二氧化钛(GOT)纳米复合材料,再通过浸渍提拉法将GOT负载于聚偏氟乙烯(PVDF)膜表面,得到GOT/PVDF改性膜。考察膜对水溶液中腐殖酸(HA)和大肠杆菌的去除行为,及膜被腐殖酸污染后在紫外光和可见光照射下的自清洁能力。结果表明,与PVDF膜相比,GOT/PVDF改性膜对腐殖酸和大肠杆菌的截留能力增强,膜污染得到抑制,且改性膜被腐殖酸污染后,通过紫外光和可见光的照射分别可实现85.8%和82.2%的通量恢复率,具有良好的自清洁能力。The graphene oxide-titanium dioxide（GOT） nanoparticles were prepared by hydro-thermal method, and coated on the surface of polyvinylidene fluoride（PVDF） membranes by dip-coating method for novel GOT/PVDF modified membranes. Removal of humic acid（HA） and Escherichia coli（E.coli） by modified membranes were investigated, and fouled membranes were examined for self-cleaning property under irradiation of ultra-violet（UV）light and visible light, individually. Results indicated that GOT/PVDF modified membranes performed better in pollutant removal and membrane fouling mitigation than PVDF membranes. The modified membranes fouled by HA attained flux recovery rates of 85.8% and 82.2% after irradiation of UV light and visible light, respectively, indicating its good self-cleaning property.

关 键 词：氧化石墨烯-二氧化钛(GOT) 聚偏氟乙烯膜(PVDF) 光催化 表面改性 膜污染 自清洁 

分 类 号：TQ028.8[化学工程]