氯丙酸改性壳聚糖对Hg^(2+)的吸附性能研究  

Study on the adsorption behavior of Hg^(2+) by chloropropionic acid modification chitosan

作　　者：李爱阳[1] 

机构地区：[1]湖南工学院化工系,湖南衡阳421002

出　　处：《工业水处理》2009年第7期28-30,共3页Industrial Water Treatment

基　　金：湖南省教育厅科研计划项目(07C030);衡阳市工业科研开发计划项目(06KG59)

摘　　要：研究了改性壳聚糖对重金属Hg2+的吸附特性,包括吸附动力学和吸附等温式,且研究了pH、反应时间对其吸附性能的影响。结果表明:羧乙基壳聚糖对Hg2+的吸附在不同温度下符合Freundlich和Langmuir吸附等温式,吸附过程动力学适合二级反应。当pH为4～6,吸附时间为180min时,羧乙基壳聚糖对Hg2+有较高吸附效果。The adsorption behavior of Hg^2＋ by modification chitosans has been investigated. It includes the related mathematic mode, the results show that thermodynamic data of carboxyethyl-chitosan adsorption Hg^2＋ fit the Freundlich and Langmuir adsorption isotherms at different temperatures. The adsorption process kinetic is suitable for the second-order reaction. When its pH is 4-6 and adsorption time 180 min, the adsorption behavior of Hg^2＋ by carboxyethyl-chitosan is better.

关 键 词：氯丙酸 壳聚糖 吸附等温式 吸附动力学 

分 类 号：X703.1[环境科学与工程—环境工程]