取代纤维素修饰的吸附树脂对1,2-苯并异噻唑-3-酮(BIT)的吸附研究  

Study on the adsorption of 1,2-benzisothiazolin-3-one(BIT) with the adsorption resins modified with substituted cellulose

作　　者：杨珊珊[1] 刘总堂[2] 邢蓉[2] 吴秀红[2] 费正皓[2] 

机构地区：[1]常州大学环境与安全工程学院,江苏常州213164 [2]江苏省滩涂生物资源与环境保护重点建设实验室,盐城师范学院,江苏盐城224002

出　　处：《计算机与应用化学》2013年第9期992-994,共3页Computers and Applied Chemistry

基　　金：国家自然科学基金资助(21143009和21077087);江苏省"六大人才高峰"项目资助(2011-JY-011);江苏省"333高层次人才工程"资助;江苏省新型环保重点实验室开放课题基金资助(AE201009);江苏省教育厅项目资助(13KJB610016)

摘　　要：通过Friedel-Crafts后交联反应分别制备了乙基纤维素、羟丙基纤维素修饰的超高交联吸附树脂(分别命名为ZT1和ZT2),以Amberlite XAD-4树脂作参照,通过等温吸附实验和吸附动力学实验探讨了修饰后的树脂对水溶液中BIT的吸附性能和机理。结果表明:ZT1、ZT2修饰的树脂比Amberlite XAD-4树脂对水溶液中BIT具有更好的吸附效果,Langmuir和Freundlich方程均能较好拟合修饰树脂对BIT的吸附等温线。ZT1、ZT2修饰的树脂对BIT的吸附以熵推动的自发物理吸附过程为主,吸附过程放热,吸附均符合准一级动力学吸附过程,颗粒内扩散过程是该吸附过程的主要控制步骤。The resins modified with ethyl cellulose （named ZT1） or hydroxy propyl cellulose （named ZT2） during the post-crossing of chloromethyl low crosslinking macroporous polystyrene polymer were prepared and characterized by IR and BET. The adsorption performance of BIT onto ZT1 and ZT2 was studied through static and kinetic adsorption experiment with the commercial Amberlite XAD-4 as a contrast. The results showed that ZT1 and ZT2 resins had better adsorption capability to BIT than that of Amberlite XAD-4. Langmuir and Freundlich isotherm equation can fit the adsorption isotherm of BIT onto ZT1 and ZT2 perfectly. Thermodynamic parameters showed that the adsorption was a mainly spontaneous physical adsorption process driven by entropy and the process was exothermic. The adsorption dynamics of BIT on ZT1 and ZT2 were fitted into first-order dynamics equation, which shows intraparticle diffusion was the rate-determining step in the adsorption process.

关 键 词：BIT 吸附树脂 动力学 热力学 

分 类 号：TQ015.9[化学工程] TP391.9[自动化与计算机技术—计算机应用技术]