摘要
通过研究201×7、AB-8、D301R、DAION PA312共4种离子交换树脂对L-丝氨酸的吸附和脱附能力,筛选出最佳树脂为DAION PA312阴离子交换树脂,并确定了最佳的吸附与脱附工艺参数,即吸附条件:上样溶液pH=9,吸附时间为20 min,实际交换容量为94.25 mg/g;脱附条件:洗脱液为0.2 mol/L的磷酸盐缓冲液(pH=5),洗脱流速为0.4 mL/min。结果表明,DAION PA312树脂对L-丝氨酸的吸附量大,吸附时间较短,适用于L-丝氨酸的分离纯化。
By studying the adsorption and desorption ability of four different kinds of ion exchange resins named 201×7,AB-8,D301R and DAION PA312 to L-serine,the better resin named DAION PA312 was selected,and the best adsorption and desorption process parameters were also determined.Adsorption conditions:The sample solution pH=9,the adsorption time was 20 min,the actual exchange capacity was 94.25 mg/g;Desorption conditions:Eluent was 0.2 mol/L of phosphate buffer solution(pH=5),elution flow rate was 0.4 mL/min.The results showed that DAION PA312 had a high adsorption amount and lower adsorption time,which was suitable for the separation and purification of L-serine.
作者
郑桂花
李世尧
张婷
崔雄
张文浩
孙静
邱诚
ZHENG Gui-hua;LI Shi-yao;ZHANG Ting;CUI Xiong;ZHANG Wen-hao;SUN Jing;QIU Cheng(School of Materials and Environmental Engineering,Chengdu Technological University,Chengdu 611730,China;School of Environmental Science and Engineering,Huazhong University of Science and Technology,Wuhan 430074,China)
出处
《湖北农业科学》
2021年第18期133-136,共4页
Hubei Agricultural Sciences
基金
成都工业学院人才引进项目(2020RC007)。
关键词
离子交换树脂
L-丝氨酸
吸附
脱附
分离纯化
ion exchange resin
L-serine
adsorption
desorption
separation and purification
