改性沸石对Cr(VI)的吸附作用研究  

Research on Adsorption of Cr(VI) Ion by Modified Zeolite

作　　者：施惠生[1] 刘艳红[2] 

机构地区：[1]同济大学先进土木工程材料教育部重点实验室,上海200092 [2]上海工程技术大学材料工程学院,上海201620

出　　处：《建筑材料学报》2006年第4期408-411,共4页Journal of Building Materials

基　　金：国家自然科学基金资助项目(20277027);上海市科委重点项目(032312043-2)

摘　　要：研究了改性沸石对Cr(VI)吸附的影响因素,即研究了溶液酸度、吸附时间、吸附剂用量和Cr(VI)的初始浓度对吸附的影响.结果表明:溶液的pH值是影响吸附的主要因素;离子交换和表面络合反应是主要吸附形式;改性沸石对Cr(VI)的吸附符合Langmiur吸附等温式,属于单分子层吸附.Influencing factors in using modified zeolite to adsorb chromium（VI） ion were investigated. The adsorption was tested under laboratory conditions as a function of pH, shaking time, quantity of modified zeolite and initial metal ion concentration. The results of this research show that the adsorption capacity of modified zeolite strongly depends on pH of solution; and the mechanism is surface complex adsorption, and the adsorption conforms to Langmiur isotherms equation of single molecular layer adsorption.

关 键 词：沸石 Cr(Ⅵ) 吸附 

分 类 号：X799.1[环境科学与工程—环境工程]