The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 02, 1993
Filed:
Dec. 11, 1990
Jacques Foos, Orsay, FR;
Marc Lemaire, Villeurbanne, FR;
Alain Guy, Pontcarre, FR;
Vincent Guyon, Paris, FR;
Rodolphe Chomel, Orange, FR;
Andre Deloge, Bagnols/Ceze, FR;
Pierre Doutreluigne, Bagnols/Ceze, FR;
Henri Le Roy, Equeurdreville, FR;
Cogema-Compagnie Generale des Matieres Nuclearies, Velizy Villacoublay, FR;
Abstract
The invention concerns the recovery of Pu (IV) by using crown compounds. According to the invention, the aqueous solution containing the plutonium (IV) is placed in contact with at least one crown compound, for example DCH 18C6, dissolved in an organic diluting agent, such as benzonitrile. In the case where the solution only contains traces of Pu, it is possible to use a crown compound secured to a solid phase, such as silica. The aqueous solution is a concentrated solution of fission products, an effluent originating from an irradiated nuclear fuel reprocessing installation or a concentrated solution of plutonium with americium.