Patent US4120933A successfully refreshed from Google Patents.
US4120933A
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Decontamination of plutonium from water with chitin
Assignee: United States Department of Energy
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Filing: 1977-09-27
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Granted: 1978-10-17
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Expires: 1997-09-27
Abstract
Abstract The invention relates to a process for decontaminating or removing radionuclides from aqueous solution.
Inventors
- 👤 Gary L. Silver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:49
CPC Classifications
C; C01; C01G; C01G56/00; C01G56/001; C02; C02F; C02F1/00; C02F1/28; C02F1/286; G; G21; G21F; G21F9/00; G21F9/04; G21F9/06; G21F9/12; C02F2101/00; C02F2101/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A process for removing at least an 80% portion of plutonium from an aqueous solution containing said plutonium comprising; adding to said aqueous solution a buffer solution to provide a pH in the range of about 5 to about 10, thereafter contacting said resulting solution with comminuted chitin, subsequently agitating said solution, thereafter separating the solution from the chitin, and finally incinerating the chitin to produce an ash containing a portion of said plutonium.
Claim 2
Dependent Claim
74 words
A process for removing at least an 80% portion of plutonium from an aqueous solution containing said plutonium comprising; adding to said aqueous solution a buffer solution to provide a pH in the range of about 5 to about 10, thereafter contacting said resulting solution with comminuted chitin, subsequently agitating said solution, thereafter separating the solution from the chitin, and finally incinerating the chitin to produce an ash containing a portion of said plutonium.
References Cited (Backward Citations)
US3791981A
Cited
US3763049A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-16 | 1982-04-17 | 1982-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-16 | 1986-04-17 | 1986-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-16 | 1990-04-17 | 1990-10-17 | $7700.00 | Window Closed / Lapsed |