Encapsulated ion-exchange resin and a method for its manufacture
OwnerLars O. Hoglund, Hubert R. Eschrichinventors
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Abstract
A method for long-term storage of radioactive waste in a solid bitumen is here taught. A granular ion-exchange resin (including radioactive ions) is mixed with a bitumen and water emulsion to produce a swollen aqueous product for encapsulation. The method is carried out at room temperature and optionally includes a cationic emulsion having a pH value of less than 4. The emulsion has a water content form 15-50% by weight and preferably is saturated with the water.
Claims8
A solid bitumen product for long term storage of radioactive waste and having encapsulated therein a granular ion-exchange resin, said ion-exchange resin being at least partially saturated with radioactive ions the product characterized in that the ion-exchange resin is in a swollen aqueous form.
A method for producing a solid bitumen product for long term storage of radioactive waste having encapsulated therein a granular ion-exchange resin including radioactive ions, the method characterized by mixing the ion-exchange resin with a bitumen and water emulsion, and by adding the ion-exchange resin to the emulsion in an amount at which the break point of the emulsion is reached and the mixture is transformed to a solid product in which the ion-exchange resinis present in a swollen aqueous form.
Dependencies are inferred from the claim text.