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当前位置: 首页 > 文章 > 固定化假丝酵母脂肪酶对光皮树油的吸附性能 中南林业科技大学学报 2014,34 (2) 117-121
Position: Home > Articles > Adsorption kinetics of immoblized candida lipase to Swida wilsoniana oil Journal of Central South University of Forestry & Technology 2014,34 (2) 117-121

固定化假丝酵母脂肪酶对光皮树油的吸附性能

作  者：
肖志红;吴红;李昌珠;张爱华;刘汝宽;吴晓芙
单  位：
中南林业科技大学;湖南省林业科学院
关键词：
光皮树油;固定化假丝酵母脂肪酶;多孔高分子微球;吸附平衡;吸附动力学
摘  要：
通过TEM、比表面孔分布测定仪等对含环氧基团的聚合物载体(GHD)性能进行了表征。以GHD为载体,制备了固定化假丝酵母脂肪酶。研究了光皮树油在固定化假丝酵母脂肪酶(I-CRL)上的吸附行为,从吸附平衡和吸附动力学角度探讨了吸附机理。结果表明,光皮树油在I-CRL上的等温吸附过程符合Langmiur方程,为单分子层吸附。实验数据能很好的拟合二级动力学吸附方程,当采用聚合物GHD(40)为载体,初始光皮树油浓度(Ce)为210 mg/g,在温度为325 K,330 K,335 K时,由Arrhenius公式求得的表观活化能Ea为30.44 kJ/mol,吸附过程为吸热反应。
译  名：
Adsorption kinetics of immoblized candida lipase to Swida wilsoniana oil
作  者：
XIAO Zhi-hong;WU Hong;LI Chang-zhu;ZHANG Ai-hua;LIU Ru-kuan;WU Xiao-fu;Central South University of Forestry and Technology;Hunan Academy of Forestry;
关键词：
Swida wilsoniana oil;;immobilized candida lipase;;porous polymer micro-sphere;;adsorption equilibrium;;adsorption kinetics
摘  要：
A polymeric carrier(GHD) supported with epoxy groups was characterized by TEM and Micromeritics ASAP 2010(a kind of specifi c surface pore distribution analyzer). The immobilized candida lipase(I-CRL) was prepared with GHD as the carrier, further the adsorption performance of Swida wilsoniana oil on I-CRL was studied, and the adsorption mechanisms were investigated from the angles of adsorption equilibrium and kinetic. The results show that the isothermal adsorption of S. wilsoniana oil on I-CRL well agreed with that of Langmiur isothermal model, indicating that the adsorption of S. wilsoniana oil oil on I-CRL was a monolayer adsorption. The experimental data fi tted well to the second-order kinetic model in the case that GHD(40) as carrier and the initial Ce was 210 mg/g. At the meantime, the apparent activation energy(Ea= 30.44 kJ/mol) can be calculated based on Arrhenius equation by the data obtained at 325 K, 330 K and 335 K. The adsorption of Swida wilsoniana oil on I-CRL was proved to be an endothermic reaction.

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