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Confining caesium in expanded natural Perlite

Rehspringer, Jean Luc and Balencie, J. and Vilminot, Serge and Burger, Didier and Boos, Anne and Estournès, Claude Confining caesium in expanded natural Perlite. (2007) Journal of the European Ceramic Society, vol. 27 (n° 2 - 3). pp. 619-622. ISSN 0955-2219

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Official URL: http://dx.doi.org/10.1016/j.jeurceramsoc.2006.04.118

Abstract

We present the potential use of expanded perlite, a metastable amorphous hydrated aluminum silicate, as a permanent medium for the long-term confinement of caesium. A simple loading by mixing an aqueous caesium nitrate solution and expanded perlite at 300K followed by thermal annealing leads to 96% sintering. The formation of pollucite, CsAlSi2O6, a naturally occurring mineral phase, appears as the crystalline phase embedded in a glassy phase. Leaching tests on the resulting glass-ceramics reveal a very low Cs departure of 0.5 mgm−2 day−1. This simple method seems to be a good way to permanently confine caesium issued from recycled nuclear waste.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Journal of the European Ceramic Society website : http://www.sciencedirect.com/science/journal/09552219
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Other partners > Université Louis Pasteur-Strasbourg I - ULP (FRANCE)
Laboratory name:
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Deposited By: Celine Cabaup

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