Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1570018 | Journal of Nuclear Materials | 2006 | 6 Pages |
Abstract
We present the potential use of expanded perlite, a metastable amorphous hydrated aluminium silicate, as a permanent medium for the long-term confinement of cesium. The method requires simply a loading by mixing an aqueous cesium nitrate solution and expanded perlite at 300 K followed by densification by sintering. The formation of pollucite, CsAlSi2O6, a naturally occurring mineral phase, upon careful heat treatment is demonstrated by X-ray diffraction. Leaching tests on the resulting glass-ceramics reveal a very low Cs departure of 0.5 mg m−2 d−1.
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Nuclear Energy and Engineering
Authors
J. Balencie, D. Burger, J.-L. Rehspringer, C. Estournès, S. Vilminot, M. Richard-Plouet, A. Boos,