中文摘要：

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46mA／cm^2，进料速度为0．2mL／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．

英文摘要：

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,