大孔吸附树脂吸附染料木素的研究  

Study on Adsorption of Genistein with Macroporous Adsorption Resins

作　　者：熊春华[1] 张晓民[1] 

机构地区：[1]浙江工商大学食品科学生物技术与环境工程学院,浙江杭州310035

出　　处：《湘潭大学自然科学学报》2007年第4期59-62,共4页Natural Science Journal of Xiangtan University

基　　金：浙江省科技计划项目(2006C31029);浙江省高校中青年学科带头人基金;浙江省自然科学基金(201207);浙江省教育厅科学基金资助项目

摘　　要：研究了ADS-7型大孔吸附树脂对染料木素的吸附行为及洗脱条件.结果表明,ADS-7型树脂对染料木素的吸附在pH=5.0的HAc-NaAc介质中最佳,静态饱和吸附容量为54.21 mg/g,用100%的乙醇溶液解吸,一次解吸率为98.77%;测得298 K下的表观吸附速率常数k298=1.42×10-4s-1.等温吸附遵循Freundlich方程,吸附过程的热效应△H=65.28 kJ/mol.The adsorption and elution behavior of ADS -7 macroporous adsorption resin for genistein were investigated. Experimental results showed that ADS - 7 resin has a good adsorption ability for genistein at pH = 5.0 in the HAc - NaAc medium. The statically saturated adsorption capacity is 54.21 mg/g. Genistein adsorbed on the resin can be eluted with 100% C2H5OH and elution percentage is as high as 98.77%. The apparent adsorption rate constant is k 298 = 1.42 ×10^-4s^-1. The adsorption behavior of ADS - 7 resin for genistein obeys the Freundlich isotherm. The enthalpy change ΔH of adsorption is 65.28 k J/mol.

关 键 词：大孔吸附树脂 染料木素 吸附 动力学 热力学 

分 类 号：O654.73[理学—分析化学]