苯丙氨酸和天冬氨酸水溶液的纳滤分离及其过程模拟  

Nanofiltration of L -phenylalanine and L -aspartic acid aqueous solution and its process simulation

作　　者：王晓琳[1] 营爱玲[2] 

机构地区：[1]清华大学化学工程系,北京100084 [2]淮海工学院化学工程系,连云港222000

出　　处：《膜科学与技术》2001年第2期6-9,13,共5页Membrane Science and Technology

基　　金：国家自然科学基金资助项目 !(2 9876 0 18) ;江苏省教委自然科学基金项目 !(99KJB5 30 0 0 3)

摘　　要：选择苯丙氨酸和天冬氨酸水溶液进行了纳滤分离过程研究 ,讨论了不同 pH下氨基酸的透过特性 。The permeation experiments of aqueous solution of amino acids ( L -phenylalanine and L -Aspartic acid) were carried out with nanofiltration membranes. The rejections of phenylalanine and aspartic acid are about 0 and 90%, respectively. The results show that the amino acids having large differences of isoelectric points (p I ) can be separated satisfactorily by adjusting the value of pH. Then the concentration and separation process of phenylalanine and aspartic acid solution was simulated. A batchwise concentration and diafiltration system was designed. The results show that it is feasible to separate phenylalanine and aspartic acid in viewpoint of technology.

关 键 词：纳滤 膜分离 氨基酸 苯丙氨酸 天冬氨酸 水溶液 

分 类 号：TQ028.8[化学工程] TQ922[轻工技术与工程—发酵工程]