Fractal-like adsorption kinetics of Pb^(2+) in rocks

查看全文 作　　者：XU [1]Longjun;ZHOU [1]Zhengguo;LIU [1,2]Chenglun;XIAN [1]Xuefu

机构地区：[1]Key Laboratory for the Exploitation of Southwestern Resources and Environmental Disaster Control Engineering of Ministry of Education, Chongqing University, Chongqing 400044, China;[2]College of Chemistry and Chemical Engineering, Chongqing University, 400044, China

出　　处：《Chinese Journal Of Geochemistry》索引2008年第27卷第2期,共4页

摘　　要：The adsorption kinetics of Pb2+ in rocks has been studied using ion selective electrodes and atomic absorption spectrophotometer. The results showed that the adsorption process is a fractal-like reaction. The adsorption rate was relatively high before 30 minutes, and then dropped. The saturated adsorption capacity (a) of Pb2+ and kinetic parameters (b, α , D and k) increased with increasing initial concentrations of Pb2+. These parameters (except a) decreased while Na+ was present in the solution. Furthermore, the smaller the rocks were in grain size, the bigger these kinetic parameters would be, though the parameter a was almost constant. 关键词：动力学吸附作用角砾岩砂岩

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Fractal-like adsorption kinetics of Pb^(2+) in rocks

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