D-101大孔吸附树脂对黄花蒿黄酮的吸附热力学和动力学研究  

ADSORPTION THERMODYNAMICS AND KINETICS OF ARTEMISIA ANNUA FLAVONOIDS ADSORBED ON MACROPOROUS ADSORBENT RESINS D101

作　　者：熊利芝[1,2] 李佳焱 王家坚 欧阳文[2] 朱杰英[2] 

机构地区：[1]吉首大学植物资源保护与利用湖南省高校重点实验室,吉首416000 [2]吉首大学生物资源与环境科学学院,吉首416000

出　　处：《离子交换与吸附》2014年第4期334-342,共9页Ion Exchange and Adsorption

基　　金：国家自然科学基金项目(No.51262008;51202087;51364009);湖南省自然科学基金重点项目(No.12JJ2005);湖南省自然科学基金项目(No.14JJ4048);湖南省科技厅工业支撑计划重点项目(No.2012GK2017);湖南省教育厅重点项目(No.12A109);湖南省高校创新平台开放基金项目(No.13K094);植物资源保护与利用湖南省高校重点实验室开放基金(No.JSK201116);返校博士科研资助经费研究项目(No.jsdxxcfxbskyxm201111);湖南省重点学科建设项目(No.JSU0713)

摘　　要：通过静态吸附实验，研究了D-101大孔吸附树脂对黄花蒿黄酮的吸附热力学和动力学过程。结果表明，当温度在298～318K和在实验研究浓度范围内，D-101大孔吸附树脂对黄花蒿黄酮的吸附符合Freundlieh等温吸附方程：△G〈0，吸附过程能自发进行；△H〈0，为放热过程；△S〈0，D-101大孔吸附树脂吸附黄花蒿黄酮的作用大于水的解吸过程，导致熵减。分别采用准一级动力学方程、准二级动力学方程和粒内扩散动力擘模型探讨其吸附特性，研究结果表明，吸附过程符合准二级动力学方程，粒内扩散与膜扩散交互控制黄花蒿黄酮在D-101大孔吸附树脂上的吸附。The adsorption thermodynamics and kinetics of artemisia annua flavonoids absorbedon macroporous adsorbent resins D101 were studied by static adsorption experiments. Theresults showed that the adsorption equilibrium data were agreed with Freundlich adsorptionisotherm well in the temperature range of 298-318K and concentration range in the experiment.Thermodynamic analysis suggested △G〈0, △H〈0 and △S〈0, which indicated the adsorptionprocedure was a spontaneously exothermic reaction with entropy decrease. The adsorption ofartemisia annua flavonoids on the macroporous adsorbent resins D101 could be described wellby Pseudo-second-order rate equation, and the rate-determining step of the adsorption was thecombined action of film diffusion and intraparticle diffusion.

关 键 词：大孔吸附树脂 黄花蒿黄酮 热力学 动力学 

分 类 号：R284.2[医药卫生—中药学]