荷电膜表面电性能对截留性能的影响  

Effect of Surface Electrical Properties on Rejection Performance of the Charged Membrane

作　　者：李国东[1] 王薇[2] 

机构地区：[1]南开大学滨海学院环境科学与工程系,天津300270 [2]天津膜天膜工程技术有限公司,天津300160

出　　处：《材料导报》2010年第24期63-66,共4页Materials Reports

基　　金：国家重点基础研究发展计划(973计划)(2006CB708602)

摘　　要：研究了流动电位和Zeta电位与无机盐溶液的浓度及测试压力的关系,以及随操作压力、无机盐溶液种类和浓度等因素的变化荷电膜对无机盐溶液截留性能的影响。结果表明,荷电膜由于离子吸附而带有负电荷,在低浓度溶液中荷电膜的表面电学性能对膜的截留性能有重要影响,而在高浓度溶液中荷电膜电性能的影响不大。Effects of the concentration of inorganic electrolyte solutions and operating pressure on the streaming potential（△E） and Zeta potential（ ξ ） are investigated, via testing the △E of charged membrane in various inorganic electrolyte solutions. The effects of the type and the concentration of inorganic electrolyte solutions as well as the operating pressure on the separation performance of membranes （such as observed rejections） are also investigated. The experimental results show that charged membrane is with a negative charge due to adsorption of ions. In the low concentration solution, the surface electrical properties of charged membrane have a major impact on the retention properties. But the impact of the surface electrical properties is not strong in high concentration solution.

关 键 词：荷电膜 流动电位 截留性能 

分 类 号：TQ028[化学工程]