黄芪中药渣碳化吸附剂对水中阿莫西林的吸附特性研究

Study on the Adsorption Characteristics of Amoxicillin in Water by the Astragalus Traditional Chinese Medicine Residue Carbonization Adsorbent

将黄芪中药渣高温焙烧,得到黄芪中药渣碳化吸附剂,进行水中阿莫西林的吸附特性研究,考察黄芪中药渣碳化吸附剂的不同添加量、阿莫西林的初始浓度、阿莫西林的初始pH值和吸附时间等吸附实验条件,研究结果表明:在常温下,阿莫西林溶液的初始浓度为100.0 mg/L、初始溶液的pH值为3.05、黄芪中药渣碳化吸附剂的添加量为3.0 g/L、吸附时间为90 min的条件下,黄芪中药渣碳化吸附剂对水中阿莫西林的吸附效果最佳,吸附率可达86%,吸附量为28.6 mg/g。动力学实验结果表明伪二级动力学模型能更好地描述黄芪中药渣碳化吸附剂对水中阿莫西林的吸附动力学,说明吸附过程中存在一些结合反应。

The astragalus traditional Chinese medicine residuecarbonization adsorbent was obtained by calcining the astragalus traditional Chinese medicine residue at high temperature,and the adsorption characteristics on adsorption of amoxicillin in water were studied.The adsorption experimental conditions,such as the different addition amount of the astragalus traditional Chinese medicine residue carbonization adsorbent,the initial concentration of amoxicillin,the initial pH value of amoxicillin and the adsorption time,were mainly investigated.The results showed that under normal temperature the initial concentration of amoxicillin solution was 100.0 mg/L,the initial pH of solution was 3.05,the addition amount of astragalus traditional Chinese medicine residuecarbonization adsorbent was 3.0 g/L,and the adsorption time was 90 min.The adsorption effect of the astragalus traditional Chinese medicine residue carbonization adsorbent on amoxicillin in water was the best,the adsorption rate was 86%,and the adsorption amount was 28.6 mg/g.The results of kinetic experiments show that the pseudo second order kinetic model can better describe the adsorption kinetics of amoxicillin in water by astragalus traditional Chinese medicine residue carbonization adsorbent,indicating that there are some binding reactions in the adsorption process.