Immobilization of Pb in a Geopolymer Matrix

  1. Dan S. Perera*,
  2. Zaynab Aly,
  3. Eric R. Vance†,
  4. Masahiro Mizumo‡

Article first published online: 26 MAY 2005

DOI: 10.1111/j.1551-2916.2005.00438.x

Issue

Journal of the American Ceramic Society

Journal of the American Ceramic Society

Volume 88, Issue 9, pages 2586–2588, September 2005

Additional Information

How to Cite

Perera, D. S., Aly, Z., Vance, E. R. and Mizumo, M. (2005), Immobilization of Pb in a Geopolymer Matrix. Journal of the American Ceramic Society, 88: 2586–2588. doi: 10.1111/j.1551-2916.2005.00438.x

Author Information

  1. Australian Nuclear Science and Technology Organisation, Menai NSW 2234, Australia

  1. †

    **Fellow, American Ceramic Society.

  2. ‡

    ‡Permanent address: School of Mechanical Engineering, Nagaoka University of technology, Nagaoka, Niigata, Japan.

*†Author to whom correspondence should be addressed. e-mail: dsp@ansto.gov.au

Publication History

  1. Issue published online: 26 MAY 2005
  2. Article first published online: 26 MAY 2005
  3. Manuscript No. 20051. Received January 20, 2005; approved February 14, 2005.

SEARCH

SEARCH BY CITATION

ARTICLE TOOLS

View Full Article (HTML) Get PDF (292K)

In a geopolymer matrix prepared by mixing a metakaolinite precursor with a solution of potassium hydroxide and silicate, 1 wt% Pb as the nitrate has been immobilized. Under the United States Environmental Protection Agency test protocol the Pb release was less than 5 ppm, the acceptable limit for landfills in the U.S.A. Electron microscopy showed Pb was present in the major amorphous phase and a minor (∼1 vol%) Ca-rich potassium silicate phase. Heating cured samples to several hundred degrees Centigrade was not significantly advantageous for immobilizing Pb.

View Full Article (HTML) Get PDF (292K)