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利用Langmuir、Freundlich、Temkin-Pyzhev和Dubinin-Radushkevich等温线模型,以及准一级动力学、准二级动力学、粒子内扩散、Boyd和Elovich模型,对驼血多肽在大孔吸附树脂上的吸附行为进行了系统研究。吸附等温线研究表明,驼血多肽分子在大孔吸附树脂上的吸附等温线属于Brunauer吸附等温线分类中的类型II;该吸附过程属于多层吸附过程,且属于简单的物理吸附,但其吸附作用力相对较弱。吸附动力学研究表明,驼血多肽在AUKJ-1的吸附过程属于慢吸附类型,可以很好的地利用准二级动力学模型进行拟合,受到外部传质和粒子内扩散的共同控制,有明显的活化能变化。该研究结果可为使用大孔吸附树脂分离纯化驼血多肽的工艺研究提供理论指导和技术支持,为驼血产品的深度开发和综合利用提供科学依据。
The Langmuir, Freundlich, Temkin-Pyzhev and Dubinin-Radushkevich isotherm models and the adsorption of the camelid polypeptide on the macroporous resin were studied by quasi-first-order kinetics, quasi-second order kinetics, intramolecular diffusion, Boyd and Elovich model Conducted a systematic study. Adsorption isotherms showed that the adsorption isotherm of camelid polypeptide on macroporous resin belonged to type II in the Brunauer adsorption isotherm classification. The adsorption process belongs to the multilayer adsorption process and belongs to the simple physical adsorption. However, the adsorption The force is relatively weak. Adsorption kinetics studies show that the adsorption process of AUKJ-1 is a slow adsorption type, which can be well fitted by quasi-second-order kinetic model and controlled by external mass transfer and intra-particle diffusion. There are Significant changes in activation energy. The results of this study can provide theoretical guidance and technical support for the process of separation and purification of camelid polypeptide by macroporous adsorption resin and provide a scientific basis for the further development and comprehensive utilization of camelid products.