手性阳离子交换膜应用于多级电渗析分离DL-苯甘氨酸  

Multistage electrodialysis for the separation of DL-Phenylglycine by chiral selective cation-exchange membrane

作　　者：王晶石[1] 彭勇[1] 余立新[1] 

机构地区：[1]清华大学化工系,北京100084

出　　处：《膜科学与技术》2008年第2期89-91,共3页Membrane Science and Technology

基　　金：国家自然科学基金(20376039);973项目(2003CB615701)资助

摘　　要：将分离系数为1.05左右的手性阳离子交换膜用于四级电渗析过程分离DL-苯甘氨酸,当电流密度为46 mA/cm2,进料速度为0.2 mL/min时,过程的总体分离系数达到1.20左右,讨论了进料速度、电流密度对分离效果的影响,当进料速度增加或电流密度减小时都不利于分离.Four chiral selective cation- exchange membranes with separation factor of 1.05 for electrodiaiysis resolution of DL - a - phenylglycine have been used in a four - stage electrodialysis setup. When the current density is 46 mA/cm^2 and the feed rate is 0.2 mL/min, the overall separation factor is 1.20. The influences of the feed rate and the current density on separation have been studied. Increase in operating current density or decrease in feed rate can lead to better resolution of DL - α - phenylglycine,

关 键 词：手性选择性 阳离子交换膜 多级电渗析 分离 苯甘氨酸 

分 类 号：X703[环境科学与工程—环境工程]