摘要
研究了大孔吸附树脂对绞股蓝多糖的吸附热力学和动力学特征。采用紫外可见分光光度法测定了不同温度下的吸附等温线和吸附动力学曲线。结果表明:吸附平衡数据符合Langmuir方程、二级动力学模型、Boyd液膜扩散方程和Kannan-Sundaram颗粒内扩散方程,相关性均良好。该吸附过程为熵增加的非自发的吸热过程。吸附速率主要由颗粒内扩散控制。
The adsorptive thermodynamics and dynamics characteristics of Gynostemma polysaccharide on macroporous resin was studied.UV-visible spectrophotometry was used to detect the adsorptive equilibrium curve and adsorptive dynamic curve at different temperatures.The results showed that the adsorptive balance data were correlated well to Langmuir equation,second-order kinetic equation,Boyd film diffusion equation and kannan-sundaram equation.The relativities among them were all good.This adsorptive procedure was a non-spontaneous endothermic process of increased entropy.The rate of adsorption was mainly controlled by the intra-particle diffusion.
出处
《食品与发酵工业》
CAS
CSCD
北大核心
2012年第1期72-76,共5页
Food and Fermentation Industries
基金
辽宁省自然科学基金项目(201102091)
辽宁科技大学示范性开放实验室项目(2011006)
辽宁科技大学大学生科研训练项目(第七期)
关键词
绞股蓝多糖
大孔吸附树脂
吸附动力学
吸附热力学
Gynostemma polysaccharide
macroporous adsorption resin
dynamics
thermodynamics
