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Study on Preparation and Performances of Monovalent Ion Selective Homogeneous Cation Exchange Membrane

Authors： Wang Hanmin，GAO Xueli* ，Wang Jian，Xu Jia，GAO Congjie

Units： College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266110,China

KeyWords： Quaternized chitosan; Homogeneous cation exchange membrane; Monovalent ion selective separation; Surface modification; Electrostatic repulsion

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2011,31(5):6-12

Abstract：

In this paper, monovalent ion selective cation exchange membrane was prepared by electrodeposition method using modified material 2-hydroxy-3-trimethyl ammonium propyl chitosan and commercial homogeneous base membrane. Moreover, the effects of preparing conditions on selective separation performance of membrane were discussed, including preparation solution concentration, electrodeposition time and cross-linking system. The relevant characterizations of cation exchange membrane (CEM) were also measured by using various analytical means. The results indicate that the effect of monovalent ion selective CEM on separating monovalent and multi-valent ions could be obviously discovered and electrostatic repulsion is the main reason to explain the selective separation performance.

Funds：

十一五国家科技支撑计划项目（2006BAB04B02），国家自然科学基金项目（21006100）

AuthorIntro：

王汉敏（1986—），女，山东潍坊人，硕士研究生，研究方向为膜法水处理。通讯作者：高学理（1975—），男，浙江人，高级工程师，研究方向为膜法水处理；联系电话：0532-66782723；E-mail：gxl_ouc@126.com。

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