β-环糊精交联聚合物对氯苯的吸附特性  

Adsorption Characteristic of Chlorobenzene in Water by β-Cyclodextrin Cross-Linked Polymer

作　　者：邹东雷[1] 唐抒圆[1] 熊厚峰[1] 唐绍福[1] 李春华[1] 陈鹏[1] 

机构地区：[1]吉林大学地下水资源与环境教育部重点实验室,长春130021

出　　处：《吉林大学学报（地球科学版）》2012年第4期1166-1172,共7页Journal of Jilin University：Earth Science Edition

基　　金：国家'863'计划项目(2008AA06A410)

摘　　要：通过对水中含有微量氯苯的吸附特性研究,考察β-环糊精交联聚合物吸附氯苯的动力学、热力学及连续运行条件下的稳定性和再生性能。实验结果表明:β-环糊精交联聚合物吸附氯苯的过程符合准二级动力学模型,即化学吸附是吸附过程的控制步骤;β-环糊精交联聚合物上的等温吸附符合Langmuir吸附等温模型。在15、25、35℃时最大吸附量分别为23.36、28.17、27.85mg/g;动态模拟实验中,当氯苯质量浓度为10mg/L时,氯苯的去除率大于80%。乙醇作为溶剂可以使吸附饱和的β-环糊精交联聚合物再生。Batch adsorption experiments were carried out for the kinetics and equilibrium of Chlorobenzene （CB） in aqueous solutions using a β-cyclodextrin cross-linked polymer （β-CDP） as adsorbent,and the regeneration capacity of β-CDP. The removal efficiency and the stability of 13 CDP treating Chlorobenzene under continuous operating conditions were simulated. Adsorption data were fitted using the pseudo-first-order, pseudo-second-order kinetic equations, Langmuir and Freundlich model. It was found that the adsorption kinetics followed a pseudo-second order model for CB concentration range studied in the present work, suggesting that the rate-limiting step may be chemisorption. The adsorption data fit the Langmuir isotherm model and the maximum adsorption capacity of CB at 15, 25, 35℃ were 23.36, 28.17, 27.85 mg/g, respectively.

关 键 词：Β-环糊精交联聚合物 氯苯 吸附动力学 等温吸附 

分 类 号：X703.5[环境科学与工程—环境工程]