Process and installation for the decontamination of radioactive nitric effluents containing strontium and sodium
US5702608A · kind A · utility
9Cited by
15References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1996 |
| Grant date | Dec 30, 1997 |
| Priority date | — |
| Expiry date | Feb 5, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S210/912
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a process and an installation for the decontamination of radioactive nitric effluents containing strontium and sodium. According to this process, contacting takes place in 1 of the aqueous effluent with an organic phase incorporating a crown ether such as DCH18C6 and a diluent such as CHCl.sub.3, in order to selectively extract the strontium with respect to the sodium, followed by the reextraction of the strontium in an aqueous solution in 3, followed by fixing in 5 on a cation exchange resin. This leads to a high strontium decontamination level with a very high concentration factor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.