大孔树脂对喹乐霉素的静态吸附研究

The static adsorption of quinoxalone with macroporous resins

摘要:

本研究考察了9种不同极性的大孔树脂对喹乐霉素的静态吸附解吸效果，探讨了吸附过程中树脂静态吸附动力学和25℃时的等温吸附过程，并用Langmuir与Freundlieh方程分别对吸附过程进行了拟合。研究结果表明，XAD16 和HPD-100对喹乐霉素的吸附量均高于600 μg/g干树脂，解吸率均达到70％以上。比较XAD-16和D101两种树脂等温吸附两种方程的相关系数，Langmuir方程为0.9726和0.9871，Freundlich方程为0.8879和0.9412。因此，D101树脂对喹乐霉素的吸附解吸作用最好，吸附量达到976 μg/g干树脂，吸附过程更易发生，更适用于从标桩菌WXNXJ-B发酵液中吸附并解吸喹乐霉素。

Abstract:

Nine macroporous resins with different polarities were evaluated for the static adsorption of quinoxalone. Adsorption kinetics curves and adsorption isotherm of quinoxalone were studied at 25℃ and the process of adsorption was simulated with Langmuir and Freundlich equations. The results showed that XAD16 and HPD-100 resins displayed higher adsorption and desorption performance for quinoxalone than the other resins. Their adsorption capacity and desorption ratio were higher than 600 μg/g dry resin and 70%, respectively. Comparing the correlation coefficient of Langmuir and Freundlich equation, .the former were 0.9726 and 0.9871,respectively; the latter were 0.8879 and 0.9412, respectively。So, D101 was the better and the adsorption capacity arrived to 976 μg per gram dry resin. It was concluded that D101 resin was the ideal macroporous resin for the adsorption of quinoxalone from the fermentation broth of myxobacteria Stigmatella WXNXJ-B.