Author/Authors :
Balencie، نويسنده , , J. and Burger، نويسنده , , D. and Rehspringer، نويسنده , , J.-L. and Estournès، نويسنده , , C. and Vilminot، نويسنده , , S. and Richard-Plouet، نويسنده , , M. and Boos، نويسنده , , A.، نويسنده ,
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.
