Radium removal from aqueous media using zeolite materials
US9908788B1 · kind B1 · utility
1Cited by
73References
2Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 10, 2014 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Dec 31, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2303/14
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Systems and methods are provided for the removal and disposal of radium form an aqueous medium. The systems and methods include the removal of radium from a source by contact with either natural or synthetic zeolite. The spent zeolite is monitored for radiation levels and replaced with fresh zeolite when the level of radioactivity reaches approximately 9,000 pCi/g. Spent zeolite is disposed of at a low-level radioactive waste site. A system for monitoring and maintaining radium removal and disposal by an off-site provided is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.