Perlite for permanent confinement of cesium.
Fiche publication
Date publication
juin 2006
Auteurs
Membres identifiés du Cancéropôle Est :
Dr BOOS Anne
Tous les auteurs :
Balencie J, Burger D, Rehspringer JL, Estournes C, Vilminot S, Richard-Plouet M, Boos A
Lien Pubmed
Résumé
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, CsAl-Si2O6, 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). (c) 2006 Elsevier B.V. All rights reserved.
Référence
. 2006 Jun 30;352(1-3):196-201.