纳米SiO_2对聚丙烯腈平板膜性能的影响  

Effect of Nano-sized SiO_2 on Properties of PAN Flat Membrane

作　　者：安莹[1] 王志伟[2] 胡晓丰[1] 王盼[2] 吴志超[2] 

机构地区：[1]上海电力学院环境与化学工程学院,上海200090 [2]同济大学环境科学与工程学院污染控制与资源化研究国家重点实验室,上海200092

出　　处：《中国给水排水》2014年第7期74-77,共4页China Water & Wastewater

基　　金：上海市科学技术委员会科研计划项目(11231200400);上海高校青年教师培养资助计划项目(sdl11002);上海电力学院科研基金资助项目

摘　　要：考察了溶剂配比、聚合物浓度对聚丙烯腈(PAN)微滤膜纯水通量、污染速率和孔隙率的影响,并将无机纳米SiO2与PAN材料共混制备无机/有机共混膜,研究了共混膜的基本特性和抗有机污染特性。结果表明,当溶剂A与B的配比为3∶2、PAN浓度为13%时,PAN微滤膜成膜性能较优;纳米SiO2的添加可使PAN微滤膜的纯水通量提高1.3倍、孔隙率增加9.8%、污染速率降低74%,并且对强疏水性和中性亲水性有机污染物的抗污染能力得到增强。The effects of polyacrylonitrile （PAN） concentration and the solvent ratios on mem- brane pure water flux, fouling rate and porosity were investigated. An organic-inorganic blend membrane was prepared by blending inorganic nano-sized SiO2 and PAN. The characteristics of blend membrane and its resistance to organic fouling were studied. Experimental results indicated that when the solvent A ： B = 3 ： 2 and PAN = 13% , the properties of PAN membranes were superior. The addition of nano-sized SiO2 in PAN membrane could improve the pure water flux by 1.3 times, increase the porosity by 9.8% and decrease the fouling rate by 74%. The resistance of the membrane to fouling by strong hydrophobic and neutral hydrophilic parts of organic compounds was enhanced.

关 键 词：聚丙烯腈 纳米SIO2 微滤膜 膜特性 膜污染 

分 类 号：X703[环境科学与工程—环境工程]