Selective regeneration of isotope-specific media resins in systems for separation of radioactive isotopes from liquid waste materials
US9365911B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 26, 2013 |
| Grant date | Jun 14, 2016 |
| Priority date | — |
| Expiry date | Nov 9, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21F9/305
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Processes, systems, and methods for selectively regenerating an ion exchange resin generally comprises washing the ion exchange resin with an elution agent that encourages only selected contaminants, and especially selected radioactive isotopes, to disengage or decouple from the resin and enter solution in the elution agent, which thereafter is identified as the elution agent solution. The elution agent solution is then passed through a column of isotope-specific media (ISM). When the selected radioactive isotopes within the elution agent solution come into contact with the constituent media isotopes of the ISM, the selected radioactive isotopes are retained on the reactive surface areas of the ISM or within the interstitial spaces of the porous structures of the constituent media isotopes of the ISM. In some embodiments, the constituent media isotopes of the ISM are embedded, impregnated, or coated with the specific radioactive isotope that the particular ISM are adapted to separate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.