Method for recovering with the aid of a crown compound plutonium (IV) present in solutions, such as aqueous effluents, concentrated solutions of fission products and concentrated solutions of plutonium
US5344624A · kind A · utility
3Cited by
9References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 25, 1992 |
| Grant date | Sep 6, 1994 |
| Priority date | — |
| Expiry date | Aug 25, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/50
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.