4. Silica Polyamine Composites: Advanced Materials for Metal Ion Recovery and Remediation

  1. Alaa S. Abd-El-Aziz2,
  2. Charles E. Carraher Jr.3,4,
  3. Charles U. Pittman Jr.5 and
  4. Martel Zeldin6
  1. Edward Rosenberg

Published Online: 27 JAN 2005

DOI: 10.1002/0471712566.ch4

Macromolecules Containing Metal and Metal-Like Elements: Group IVA Polymers, Volume 4

Macromolecules Containing Metal and Metal-Like Elements: Group IVA Polymers, Volume 4

How to Cite

Rosenberg, E. (2005) Silica Polyamine Composites: Advanced Materials for Metal Ion Recovery and Remediation, in Macromolecules Containing Metal and Metal-Like Elements: Group IVA Polymers, Volume 4 (eds A. S. Abd-El-Aziz, C. E. Carraher, C. U. Pittman and M. Zeldin), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/0471712566.ch4

Editor Information

  1. 2

    Department of Chemistry, The University of Winnipeg, Winnipeg, Manitoba, Canada

  2. 3

    Department of Chemistry and Biochemistry, Florida Atlantic University, Boca Raton, Florida, USA

  3. 4

    Florida Center for Environmental Studies, Palm Beach Gardens, FL 33410, USA

  4. 5

    Department of Chemistry, Mississippi State University, Mississippi State, Mississippi, USA

  5. 6

    Department of Chemistry, Hobart and William Smith Colleges, Geneva, New York, USA

Author Information

  1. Department of Chemistry, University of Montana, Missoula, MT 59812, USA

Publication History

  1. Published Online: 27 JAN 2005
  2. Published Print: 4 MAR 2005

ISBN Information

Print ISBN: 9780471682387

Online ISBN: 9780471712565

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Keywords:

  • silica polyamine composites;
  • composites;
  • silica;
  • metal ion recovery;
  • molecular modeling;
  • grafted polymers;
  • remediation;
  • copper ion recovery;
  • mercury ion recovery;
  • chromatography

Summary

The synthesis and applications of a new class of metal sequestering silica-polyamine composite materials is reviewed. The dependence of the properties of these composites on the nature of the silica gel and on the structure of the polymer has been investigated. The average pore size of the silica has been shown to be critical for good performance of the gel while polymer structure and molecular weight has a greater influence on metal selectivity than on capacity. The composites are compared with polystyrene resins and with previously reported silica composites. Molecular modeling studies reveal that the most stable conformations of the grafted polymer are those in which the polymer chains are associated and “balled up.” Applications of these new materials to metal recovery from acid mine drainage; solvent extraction raffinates and acid ore leaches are presented.