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Effects of Metals and Metal Oxides on the Leaching of Nuclear Waste Glasses

Published online by Cambridge University Press:  25 February 2011

Aaron Barkatt
Affiliation:
Vitreous State Laboratory, The Catholic University of America, Washington, D.C. 20064
William Sousanpour
Affiliation:
Vitreous State Laboratory, The Catholic University of America, Washington, D.C. 20064
Alisa Barkatt
Affiliation:
Vitreous State Laboratory, The Catholic University of America, Washington, D.C. 20064
Morad A. Boroomand
Affiliation:
Vitreous State Laboratory, The Catholic University of America, Washington, D.C. 20064
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Abstract

The effects of the presence of various metals and metal oxides on the leaching of nuclear waste glasses in water can be considerable even under rapid flow conditions. The systems studied here include SRL TDS-131 glass in the presence of lead and stainless steel, and PNL 76-68 glass in the presence of aluminum, alumina and their mixtures. Lead specifically suppresses dissolved silica, but does not inhibit dissolution of defense waste glass as a whole. Stainless steel specifically reduces the levels of dissolved Ca and Sr. Al and Al2 O3 exercise a general reducing effect on the rates of dissolution of commercial waste glass and the presence of alumina may have a beneficial role in enhancing waste package durability.

Type
Research Article
Copyright
Copyright © Materials Research Society 1984

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References

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