Ruthenium recovery process by solvent extraction
AssigneeCommissariat a l'Energie Atomique
InventorsRichard Fitoussi, Sylvie Lours, Claude Musikas
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Abstract
Process for the recovery of the ruthenium present in an aqueous nitric solution, wherein the ruthenium is extracted in an organic solvent by contacting the nitric solution with an organic phase comprising an organophosphorous compound having at least one electron donor sulphur atom in the presence of a compound able to displace NO.sup.+ ions of the ruthenium complexes present in the nitric solution. Application to the recovery of ruthenium contained in a nitric solution obtained by dissolving irradiated fuel elements.
Claims9
A process for the recovery of the ruthenium present in an aqueous nitric solution, wherein the ruthenium is extracted in an organic solvent by contacting the nitric solution with an organic phase comprising a dialkyldithiophosphoric acid in the presence of a compound able to displace NO.sup.+ ions of the ruthenium complexes present in the nitric solution, and separating said organic phase containing the extracted ruthenium from said nitric solution.
Dependencies are inferred from the claim text.