Aluminum phosphate ceramics for waste storage

Details Aluminum phosphate ceramics for waste storage Aluminum phosphate ceramics for waste storage

G - Physics

21

F

G21F 9/16 (2006.01) B09B 3/00 (2006.01)

Patent

CA 2540250

The present disclosure describes solid waste forms and methods of processing waste. In one particular implementation, the invention provides a method of processing waste that may be particularly suitable for processing hazardous waste. In this method, a waste component is combined with an aluminum oxide and an acidic phosphate component in a slurry. A molar ratio of aluminum to phosphorus in the slurry is greater than one. Water in the slurry may be evaporated while mixing the slurry at a temperature of about 140-200~C. The mixed slurry may be allowed to cure into a solid waste form. This solid waste form includes an anhydrous aluminum phosphate with at least a residual portion of the waste component bound therein.

L'invention porte sur des formes solides de stockage de déchets et des procédés de traitement des déchets, et dans une exécution particulière, sur un procédé de traitement particulièrement adapté au traitement des déchets dangereux selon lequel on mélange les déchets à de l'oxyde d'aluminium et à un composant acide de phosphate pour produire un coulis dans lequel le rapport molaire aluminium/phosphore est supérieur à l'unité. L'eau présente dans le coulis peut être évaporée à une température d'environ 140 à 200 ·C, puis on laisse le coulis durcir, constituant ainsi une forme solide de phosphate anhydre d'aluminium comprenant au moins la partie résiduelle des déchets.

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