Abstract: The adsorption of L-arginine on D001 macroporous strong acidic resin was investigated. The results show that the adsorption can be precisely described with the Langmuir and Freundlich equations, the equilibrium of adsorption of L-arginine by D001 resin can be reached in 30 min, and the adsorption ratio decreases with the increase in NH4Cl or NaCl concentration. pH is a parameter which obviously affects the adsorption, and the optimum pH of adsorption of L-arginine from desalted cystine mother liquor is 7~8. The breakthrough of desalted cystine mother liquor through D001 resin and elution curves were also measured, showing that the elution curve is much steeper than the breakthrough curve.

Key words: L-arginine, macroporous strong acidic ion-exchange resin, adsorption

摘要： 考察了D001大孔强酸型阳离子交换树脂对L-精氨酸的吸附. 测定了25oC下的吸附等温线，发现用Langmuir方程和Freundlich方程可以较好地描述L-精氨酸在该树脂上的吸附；D001树脂吸附L-精氨酸约30 min即可达到平衡；氯化铵或氯化钠的存在使吸附率明显下降；pH对吸附影响明显，从胱氨酸母液中吸附L-精氨酸的适宜pH为7~8；同时测定了胱氨酸母液吸附的动态吸附穿透曲线和洗脱曲线，穿透曲线较缓而洗脱峰较集中.

关键词: L-精氨酸, 大孔强酸离子交换树脂, 吸附