Detoxification
AssigneeStablex A.G.
InventorChristopher Lee Chappell
Life of this patent
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Abstract
A process which comprises treating hazardous waste with an aluminium silicate or aluminosilicate and with a Portland cement in the presence of water to form a slurry and allowing the slurry to set into rock and a crystal matrix having encapsulated therein a hazardous waste and having a permeability of less than 1 .times. 10.sup.-4 cm. sec.sup.-1 and a compressive strength 28 days after preparation of 100 to 1000 psi.
Claims9
A process for detoxifying a hazardous essentially liquid waste which process comprises forming a flowable essentially aqueous slurry containing at least 20% water by mixing with the said waste while in essentially liquid form a material comprising Portland cement powder and an aluminum silicate powder or alumino-silicate powder or a mixture of said powders, said slurry thereafter setting into a detoxified frigid rock-like mass.
Dependencies are inferred from the claim text.