花生壳总黄酮的大孔树脂吸附动力学研究

发布时间：2018-05-23 09:58

本文选题：花生壳总黄酮 + 大孔树脂　；参考：《中国油脂》2017年03期

【摘要】：以花生壳为原料,采用乙醇提取花生壳中的总黄酮,并用大孔树脂吸附花生壳总黄酮。研究了吸附过程中温度对吸附量的影响,并绘制静态吸附动力学曲线,根据静态平衡吸附量分别绘制颗粒内扩散、准一级吸附和准二级吸附的3种动力学拟合曲线,并计算3种动力学模型参数。结果表明:温度对大孔树脂吸附花生壳总黄酮的吸附量具有显著性的影响,该过程是一个吸热过程;吸附速率受到液膜扩散和颗粒内扩散共同控制;确定了大孔树脂吸附花生壳总黄酮的准一级吸附动力学模型公式,并通过Arrhenius方程计算得到吸附过程的活化能E_a为7.96 k J/mol,该过程是一个物理过程。
[Abstract]:The total flavonoids from peanut shell were extracted by ethanol, and the total flavonoids were adsorbed by macroporous resin. The influence of temperature on adsorption capacity was studied, and the static adsorption kinetics curve was drawn. According to the static equilibrium adsorption quantity, three kinetic fitting curves of particle diffusion, quasi-first-order adsorption and quasi-second-order adsorption were drawn, respectively. The parameters of three dynamic models were calculated. The results showed that temperature had a significant effect on the adsorption of total flavonoids from peanut shell by macroporous resin, which was an endothermic process, and the adsorption rate was controlled by both liquid film diffusion and intragranular diffusion. The quasi-first-order adsorption kinetic model formula of macroporous resin for adsorption of total flavonoids from peanut shell was established, and the activation energy of adsorption process was calculated by Arrhenius equation. The activation energy E _ (a) of the adsorption process was 7.96kJ / mol, which was a physical process.
【作者单位】：蚌埠学院食品与生物工程学院;南京农业大学食品科技学院;
【基金】：安徽省教育厅自然科学研究重点项目(KJ2013A182) 高校领军人才引进与培育计划项目蚌埠学院学术技术带头人及后备人选项目安徽省质量工程卓越工程师培养计划项目
【分类号】：TQ28;O647.3

【相似文献】