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Immobilization of Pb in a Geopolymer Matrix (2005)

Perera, Dan S. ; Aly, Zaynab ; Vance, Eric R. ; [et al.]

Oxford, UK : Blackwell Science Inc

Journal of the American Ceramic Society 88 (2005), S. 0

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ISSN: 1551-2916

Source: Blackwell Publishing Journal Backfiles 1879-2005

Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics

Notes: 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.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1111/j.1551-2916.2005.00438.x

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