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Study of simulated HLW-glass leaching behavior under low oxygen repository condition

Published online by Cambridge University Press:  21 March 2011

Zhang Hua  and
Luo Shanggeng
Zhang Hua*
Affiliation:
Radiochemistry Department, China Institute of Atomic Energy, P.O.Box 275(93), Beijing, 102413, P.R.China
Luo Shanggeng
Affiliation:
Radiochemistry Department, China Institute of Atomic Energy, P.O.Box 275(93), Beijing, 102413, P.R.China
*
Corresponding author: Tel: +86-010-69357445; Fax: +86-010-69358509 E-mail: nzhangh@yahoo.com.cn
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Abstract

Many countries have recognized vitrification as the suitable solidification method for conditioning high level radioactive waste before they are isolated from biosphere in geologic disposal. This paper studies the leaching behavior of a simulated HLW-glass (90Nd/10) under low oxygen repository condition during 1.5 years. The leaching results showed that the glass was corroded less under low oxygen condition than under ambient atmosphere. XRD analyses showed some little diffraction peak appeared on the leached glass surface at 150°C. At the same time, no diffraction peak appeared on the leached glass surface at 90°C. The secondary products formed on the surface of the leached glass contained mainly Si, Al, Ca and Fe.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 932: Symposium – Scientific Basis for Nuclear Waste Management XXIX , 2006 , 81.1
Copyright
Copyright © Materials Research Society 2006

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References

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