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Control of Oxidation Potential for Basalt Repository Simulation Tests

Published online by Cambridge University Press:  26 February 2011

Carol M. Jantzen  and
George G. Wicks
Carol M. Jantzen
Affiliation:
E. I. du Pont de Nemours and Company, Savannah River Laboratory, Aiken, South Carolina 29808
George G. Wicks
Affiliation:
E. I. du Pont de Nemours and Company, Savannah River Laboratory, Aiken, South Carolina 29808
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Abstract

Borosilicate waste glass durability in simulated repository environments can be assessed by use of static tests in leach vessels fabricated of the representative geomedia. Control of the oxidation potential during the test simulates a basalt repository environment. Under very anoxic conditions (i.e. at negative Eh values), the interactions between basalt and SRP waste glass in silica-saturated basaltic groundwaters are the same as those of basalt and groundwater when no waste glass is present. The lack of significant leaching of ions from the waste glass and the lack of any significant changes in either the leached surfaces of glass or basalt under anoxic conditions suggests that the components of this system are at equilibrium when oxygen is absent.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 44: Symposium N – Scientific Basis for Nuclear Waste Management VIII , 1984 , 29
Copyright
Copyright © Materials Research Society 1985

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