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在静态吸附的基础上,建立了S-8树脂吸附姜黄素类化合物的等温方程和静态吸附动力学方程,发现其静态吸附规律符合Langmuir方程模型和准二次动力学模型。构建了动态吸附的传质方程,对动态吸附过程中的传质区长度与总传质系数进行探究。采用单因素试验确定了S-8树脂对姜黄素类化合物的纯化工艺,姜黄提取液直接配制上样,上样液乙醇浓度60%,上样流速2BV/h,上样量5BV;经水洗后,用无水乙醇洗脱,洗脱流速4BV/h,洗脱量为5BV。经验证,该工艺稳定,平均回收率为88.04%,姜黄素类化合物纯度从16.88%升至42.16%,表明S-8树脂适合用于初步纯化姜黄素类化合物。
On the basis of static adsorption, the isothermal equation and static adsorption kinetics equation of curcumin adsorbing S-8 resin were established, and the static adsorption law was found to be in accordance with the Langmuir equation and quasi-secondary kinetic model. The mass transfer equation of dynamic adsorption was constructed, and the length of mass transfer zone and total mass transfer coefficient in the dynamic adsorption process were explored. The purification process of curcuminoids by S-8 resin was determined by single factor experiment. The turmeric extract was prepared directly. The ethanol concentration of the sample solution was 60%, the sample flow rate was 2BV / h and the sample volume was 5BV. , Eluted with absolute ethanol, elution flow 4BV / h, elution volume of 5BV. The results showed that the process was stable, the average recovery was 88.04%, the purity of curcuminoids increased from 16.88% to 42.16%, which indicated that S-8 resin was suitable for the preliminary purification of curcuminoids.