功能性交联木薯淀粉微球对Cr^(3+)的吸附行为及吸附动力学研究  

The Adsorption Behavior and Adsorption Kinetics of Cr^(3+) on Functional Crosslinked Cassava Starch Microspheres

作　　者：丁立稳[1] 汤建萍[1] 王雷[1] 

机构地区：[1]江西师范大学化学化工学院,江西南昌330022

出　　处：《江西师范大学学报（自然科学版）》2016年第4期420-423,共4页Journal of Jiangxi Normal University(Natural Science Edition)

基　　金：国家自然科学基金(21301078);江西师范大学校级课题(5498)资助项目

摘　　要：研究了功能性交联木薯淀粉微球(CMS)对环境污水中Cr^(3+)的吸附行为及吸附动力学.实验以功能性交联木薯淀粉微球为吸附载体,考察其对Cr^(3+)的吸附性能,研究了溶液的p H值和吸附温度对吸附效果的影响,分析吸附动力学过程,并计算出吸附方程.实验结果表明:木薯淀粉微球吸附Cr^(3+)的最适合吸附p H值为3.5,在一定范围内,随着吸附温度的升高,吸附量增大;吸附过程主要为液膜扩散为主的单分子层吸附过程.In this paper,the adsorption behavior and adsorption kinetics performance of Cr^（3＋）on the functional crosslinked cassava starch microspheres were studied. In these experiments,using cassava starch microspheres as adsorption carrier,adsorption properties of Cr^（3＋）were investigated,and the effects of solution p H and adsorption temperature on the adsorption efficiency were discussed. Moreover the adsorption kinetics were studied and the adsorption equation was calculated. The results showed that the most suitable p H for the adsorption of Cr^（3＋）on cassava starch microspheres was 3. 5. In a certain range,with the increase of the adsorption temperature,adsorption amount increased. It indicated that the adsorption process was mainly the single-molecular-layer adsorption process dominated by liquid film diffussion.

关 键 词：木薯淀粉微球 CR3+ 吸附动力学 

分 类 号：TS236.9[轻工技术与工程—粮食、油脂及植物蛋白工程]