Patent ID: 6399848
Filing Date: 2002-06-04
Classification: A62D,B09B,C04B,G21F,Y02W

Abstract:
A method of encapsulating a hazardous waste material or components thereof, the method comprising:adding the hazardous waste material to a settable composition, the composition comprising a calcium carbonate, a caustic magnesium oxide and an additive, and wherein the additive is an organic acid selected from the group consisting of citric acid, lemon acid, acetic acid, glycolic acid, oxalic acid, and other di or poly carboxylic acids, tartaric acid, salicylic acid, ethylenediamine tetra acetic acid (EDTA) and other tetra acids; forming a slurry; and allowing the slurry to set to encapsulate the hazardous waste material or components thereof, the additive accelerating the formation of strong binding agents and assisting the recrystallisation of the composition to make it set.