聚丙烯腈基纳滤膜脱盐性能的研究  

Investigation of the desalination property of polyacrylonitrile-based nanofiltration membranes

作　　者：吴永红[1] 谷裕[2] 肖大君 张兵[1] 江园[1] 周佳玲[1] 

机构地区：[1]沈阳工业大学石油化工学院,辽宁辽阳111003 [2]中海油能源发展股份有限公司工程技术分公司,天津300450 [3]中国兵器集团北方华锦化学工业集团公司,辽宁盘锦124021

出　　处：《应用化工》2015年第5期890-892,895,共4页Applied Chemical Industry

基　　金：辽宁省自然科学基金(20102170);辽宁省高等学校优秀人才基金(LJQ2012010);沈阳工业大学学术带头人项目(2011037)

摘　　要：以聚丙烯腈为原料,N,N-二甲基甲酰胺为溶剂制备了纳滤膜,研究了水中离子种类(Na Cl、KCl、Mg Cl2、Mg SO4、Cu Cl2、Cu SO4)、离子浓度与溶液p H值等因素对纳滤膜脱盐性能的影响。结果表明,该纳滤膜对水中Mg SO4和Cu Cl2的截留率最好,达98.34%;随Mg SO4浓度从10 mg/L增至50 mg/L,纳滤膜的截留率在30 mg/L时最高;随p H从1增大至5,纳滤膜的截留效果先减小后增大。Nanofiltration membranes were prepared by using polyacrylonitrile as the raw material, N, N- dimethylformamide as solvent. The effects of ion species （ NaCl, KCl, MgC12, MgSO4, CuC12 and CuSO4 ） in water,ion concentration and pH value of solution on the desalination of nanofiltration membranes were investigated. Results have shown that the present nanofiltration membranes exhibit the best retention for MgSO4 and CuC12, with the value reaching to 98.34%. With the MgSO4 concentration elevating from 10 mg/L to 50 mg/L,the optimum retention rate of nanofiltration membranes appears at 30 mg/L. With the increase of pH from 1 to 5, the retention rate first decreases then increases.

关 键 词：纳滤 离子浓度 截留 PH值 

分 类 号：TQ028.8[化学工程]