ADSORPTION MECHANISM OF SOME BIVALENTHEAVY METAL CATIONS IN SOLUTIONSUSING MONTMORILLONITE
(1.Department of Environmental Engineering,Tsinghua University,Bei jing 100084；
2.Institute of Chemical Metallurgy, Chinese Academy of Sciences,Bei jing 100080)
2.Institute of Chemical Metallurgy, Chinese Academy of Sciences,Bei jing 100080)
Abstract: The frontier orbital energies of montmorillonite molecule and[Me(H2O)6]2+ (Me=Cu2+,Zn2+,Co2+ and Ni2+)were calculated by INDO method. Results showed that the chemical inter-action between montmorillonite molecule and [Cu(H2O)6]2+ or [Zn(H2O)6]2+ was possible. The exper-imental results of powder X-ray diffraction and isothermal adsorption supported the above-mentioned calculation results.
Key words: montmorillonite INDO method frontier orbital energies isothermal adsorption powder X-ray diffraction heavy metal cations