端氨基树枝状聚合物对Cr(Ⅵ)的吸附性能研究  

Study on adsorption properties of amine-terminated dendritic polymer for hexavalent chromium

作　　者：强涛涛[1] 赵静[1] 任龙芳[1] 王学川[1] 刘景涛 郑书杰 

机构地区：[1]陕西科技大学轻工科学与工程学院,陕西西安710021 [2]西安市市政公用技术应用服务中心,陕西西安710016 [3]天津中石油昆仑燃气有限公司,天津300000

出　　处：《陕西科技大学学报》2017年第3期30-35,41,共7页Journal of Shaanxi University of Science & Technology

基　　金：国家自然科学基金项目(51403120);陕西科技大学研究生创新基金项目

摘　　要：以乙二胺(EDA)和三聚氰氯(CNC)为原料,制备出不同代数的端氨基树枝状聚合物(ADP),并将其应用于Cr(Ⅵ)的吸附性能研究当中.研究结果表明:一至五代的ADP对Cr(Ⅵ)的去除率均大于80%;ADP-3在最佳吸附条件(pH=2、温度45℃、时间3h、吸附剂用量4g/L)对Cr(Ⅵ)的去除率为96%;吸附行为研究结果表明吸附动力学符合拟二级动力学方程,热力学符合Freundlich等温模型.With ethylenediamine （EDA） and cyanuric chloride （CNC） as raw materials to pre-pare the different generations of amine-terminated dendritic polymers （ADP） , which was ap-plied to the investigate of adsorption property in Cr（Ⅵ）. The results showed that the remove rate of Cr（Ⅵ） were all above 80% treated by the tirst to fifth generations move rate of Cr（Ⅵ） was 96% by ADP-3 under the optimum adsorption conditions,in which the pH value was 2 temperature was 45℃, adsorption time was 3 h, and the dosage of adsor-bent was 4 g/L. Furthermore, the adsorption behavior showed that the adsorption process followed Freundlich isothermal and pseudo second-order adsorption model.

关 键 词：端氨基树枝状聚合物 Cr(Ⅵ) 吸附 吸附动力学 吸附热力学 

分 类 号：TQ319[化学工程—高聚物工业]