大孔树脂对白葡萄酒中异戊醇的吸附动力学研究

该研究通过比较D101、D204、AB-8、X-5四种大孔树脂对白葡萄酒中异戊醇的吸附效果，选取最佳大孔树脂，并从动力学的角度对其吸附及解吸特性进行研究。结果表明，D101大孔树脂振荡吸附效果最佳，对异戊醇的吸附率达53%，其在体积分数为60%的乙醇中解吸48 h时对异戊醇的解吸率最高，达77%，具有良好的可重复利用性。D101大孔吸附树脂对白葡萄酒中异戊醇的吸附符合Langmuir吸附等温模型，可用准一级动力学吸附模型描述。采用流速为2 mL/min的体积分数为60%的乙醇对D101大孔树脂进行动态解吸时，36 h可达到最佳解吸效果，最大解吸率为84%。

Adsorptive kinetics of isopentanol from white wine by macroporous resins

The adsorption effect of isopentanol in white wine was compared among macroporous resins D101, D204, AB-8, and X-5 to select the optimal macroporous resin, and their adsorption and desorption characteristics from the point of view of kinetics were studied. The results showed that the oscillation adsorption effect of macroporous resin D101 was the optimal, the adsorption rate of isopentanol was 53%, and the desorption rate of isopentanol in 60% ethanol at 48 h was the highest of 77%, which had good reusability. The adsorption of isopentanol in white wine by macroporous adsorption resin D101 conformed to Langmuir adsorption isothermal model, which could be used for quasi-first-order kinetic adsorption profile. When the macroporous resin D101 was dynamically desorbed with 60% ethanol at a flow rate of 2 ml/min, the optimal desorption effect could be achieved, and the maximum desorption rate was 84%.