Enhancing the separation performance by introducing bioadhesive bonding layer in composite pervaporation membranes for ethanol dehydration

作     者：吴洪 周田田 李宪实 赵翠红 姜忠义 

作者机构：Key Laboratory for Green Chemical Technology School of Chemical Engineering and Technology Tianjin University Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Tianjin Key Laboratory of Membrane Science and Desalination Technology Tianjin University 

出 版 物：《Chinese Journal of Chemical Engineering》 (中国化学工程学报（英文版）)

年 卷 期：2015年第23卷第2期

页      面：372-378页

核心收录：

学科分类：081702[工学-化学工艺] 081704[工学-应用化学] 08[工学] 0817[工学-化学工程与技术] 081701[工学-化学工程] 

基　　金：Supported by the New Century Excellent Talents in University(NCET-10-0623) the National Natural Science Foundation for Distinguished Young Scholars(21125627) the National Basic Research Program of China(2009CB623404) State Key Laboratory for Modification of Chemical Fibers and Polymer Materials(Dong Hua University) 

主　　题：Pervaporative ethanol dehydration Composite membrane Bonding layer Bioadhesive Guar gum 

摘      要：A high performance composite membrane was prepared under the inspiration of bioadhesion principles for pervaporative dehydration of ***(CS)and polyacrylonitrile(PAN)ultrafiltration membranes were used as the active layer and the support layer,*** gum(GG),a natural bioadhesive,was introduced as the intermediate bonding layer to improve the separation performance and stability of the fabricated CS/GG/PAN composite *** contact angle of the GG layer was just between those of the CS layer and the PAN layer,minimizing the difference of hydrophilicity between the active layer and the support *** peeling strength of the composite membrane was significantly enhanced after the introduction of the GG *** effects of preparation conditions and operation conditions including GG concentration,operating temperature and ethanol concentration in feed on the pervaporation performance were *** as-fabricated CS/GG/PAN composite membrane showed the optimum performance with a permeation flux of up to804 g·m-2·h-1and a separation factor higher than ***,the composite membranes exhibited a desirable long-term operational stability.