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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 6    No. 1    March 1996

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ADSORPTION MECHANISM OF SOME BIVALENTHEAVY METAL CATIONS IN SOLUTIONSUSING MONTMORILLONITE
Xia Harping1,Ke Jiajun2

1.Department of  Environmental Engineering,Tsinghua University,Bei jing 100084;
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

ISSN 1672-7029
CN 43-1423/U

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