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The Role of Boron in Monitoring the Leaching of Borosilicate Glass Waste Forms

Published online by Cambridge University Press:  26 February 2011

Barry E. Scheetz ,
W. Phelps Freeborn ,
Deane K. Smith ,
Christine Anderson ,
Michael Zolensky  and
William B. White
Barry E. Scheetz
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802
W. Phelps Freeborn
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802
Deane K. Smith
Affiliation:
Department of Geosciences, The Pennsylvania State University, University Park, PA 16802
Christine Anderson
Affiliation:
12 Satellite Lane, Levittown, NY 11756
William B. White
Affiliation:
Materials Research Laboratory, The Pennsylvania State University, University Park, PA 16802 Department of Geosciences, The Pennsylvania State University, University Park, PA 16802
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Abstract

In the absence of any identified solid phase host (other than the original glass), boron has been assumed to accumulate in the fluid during the reaction of borosilicate glass waste forms with aqueous fluids. Using this assumption, it is possible to define a boron index which can be used to monitor the amount of glass that has been dissolved and to provide a worst-case measure of the degradation of the primary glass waste form. Several boron-containing silicate phases have been identified thus invalidating the assumption that boron does not precipitate. The effect is apparently small and the assumption that boron release is a direct measure of degree of alteration of borosilicate glass is still probably a good one.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 44: Symposium N – Scientific Basis for Nuclear Waste Management VIII , 1984 , 129
Copyright
Copyright © Materials Research Society 1985

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References

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