Alkali metal ions through glass: a possible radioactive waste management application

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Date

1996

Journal Title

Journal ISSN

Volume Title

Publisher

Texas A&M University

Abstract

Early studies show that some types of glass can become conductors of electricity at higher temperatures. The nature of the conductance was shown to be ionic. The studies also showed that, due to structural properties within the glass, the ionic conduction was selective. This fact motivated the present investigation of the conductive properties of tertiary glasses (S'02, CaO, and Alkali metal oxide). The objective of this research was to test the feasibility of the ionic conduction process as a method of separating radioactive cesium (stored as a nitrate) from high level radioactive waste. This objective was not completely met because of mechanical failures with the special cesium glass. The focus was then made on learning more about soda-lime glass for predictions of how a similar cesium glass will react. The glass was placed under two conditions, constant temperature or constant voltage. Two properties were measured, current and resistance. The current is a measure of how much "work" the glass is doing, and the resistance can gauge internal changes of the glass. The known relationship of glass resistance versus temperature was found to not be completely correct. A previously undocumented relationship between resistance and voltage was found, and corrections to the equation were made,

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Keywords

health physics., Major health physics.

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