LUO Shi-di1,LIU Zhi-rong2,ZHOU Li-min2,WEI Peng2 (1.College of Science,Guangdong Ocean University,Zhanjiang 524025,China;2.Department of Applied Chemistry,East China University of Technology,Fuzhou 344000,China)The adsorption experiments of Ni2+,Cu2+,Cd2+,Ce4+,Eu3+,Dy3+,Lu3+ on peat were investigated.The polarizing index,covalent index and adsorption index were used to indicate the different structure of heavy metallic ions.The cluster analysis showed that the seven kinds of heavy metal ions can be divided into five groups.The saturated adsorption capacity of heavy metal ions deduced from better Langmuir isotherm equation decreased in the order: Cu2+,Ni2+,Cd2+,Lu3+,Ce4+,Dy3+,Eu3+.The adsorption index was correlated to the saturated adsorption capacity of heavy metal on peat excellently and model between the saturated adsorption capacity of heavy metals on peat and adsorption index was established too.
2008 03 No.55 [Abstract][OnlineView][Download 244K]