离子交换纤维对阿魏酸的吸附和解吸研究

Study on performances of ion exchange fiber adsorbing and desorbing ferulic acid

目的 测定自制的强碱性离子交换纤维对阿魏酸的吸附和解吸的性能。方法 采用测定静态吸附速率曲线及测定30. 8K的吸附等温线的方法 ,并对不同入口浓度和不同流速下 ,阿魏酸在固定床吸附柱上的动态吸附过程进行了研究。结果 离子交换纤维对阿魏酸的静态饱和吸附量为 180 . 4mg·g-1(干纤维 ) ,用少量甲醇和稀盐酸即可将吸附在纤维上的阿魏酸完全解吸。结论 离子交换纤维对阿魏酸的吸附速率远大于D2. 96离子交换树脂对阿魏酸的吸附速率 ,是提纯和分离阿魏酸的一种新型离子交换剂。

OBJECTIVE: To determine the adsorption and desorption characteristics of self-prepared strong anion exchange fiber for ferulic acid. METHODS: Determination of static adsorption velocity curve and adsorption isotherms at 308K, and the dynamic adsorption process of ferulic acid on fixed bed adsorption column at different initial concentration and different flow speed were studied. RESULTS: Static saturated adsorption capacity of ion exchange fiber for ferulic acid was 180.4 mg&middotg-1(dry fiber), ferulic acid adsorbed on the fiber was desorbed absolutely by a small quantity of methanol and watery hydrochloric acid. CONCLUSION: Adsorption velocity of ion exchange fiber for ferulic acid was faster than D296 ion exchange risin. Ion exchange fiber is a new ion exchange reagent for extracting and separating ferulic acid.