US4277345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the recovery of uranium dissolved in sea water
Assignee: Forschungszentrum Jülich
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Filing: 1979-12-04
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Granted: 1981-07-07
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Expires: 1999-12-04
Abstract
Abstract A method for recovering uranium ions from sea water utilizing an adsorbentatrix. The materials contained in the matrix comprise biologically recent humic acids. Matter which serves as carrier material for the humic acids is present in the dry state up to 99% by weight.
Inventors
- 👤 Dieter Heitkamp
- 👤 Klaus Wagener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:55
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/28; C02F1/286; B; B01; B01J; B01J20/00; B01J20/22; B01J20/24; C22; C22B; C22B3/00; C22B3/18; C22B60/00; C22B60/02; C22B60/0204; C22B60/0217; C22B60/0252; C22B60/0256; C02F2101/00; C02F2101/006; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A method of concentrating uranium ions naturally occurring in sea water having a pH of 8.3, the method comprising the steps of: suspending in the sea water an adsorbent matrix of humic acids and carrier material, said matrix being in the form of natural, biologically recent, chemically untreated black peat granules ranging in diameter from 0.1 mm to 10 mm said matrix being contained by a structure which admits sea water but retains the granules, the matrix having a degree of decomposition in the range of thirty-five percent to fifty-five percent, and the carrier material comprising up to ninety-nine percent of the matrix by weight; providing relative motion between the matrix and sea water to adsorb the uranium ions onto the matrix and to thereby concentrate the uranium ions for subsequent removal.
Claim 2
Independent Claim
132 words
A method of concentrating uranium ions naturally occurring in sea water having a pH of 8.3, the method comprising the steps of: suspending in the sea water an adsorbent matrix of humic acids and carrier material, said matrix being in the form of natural, biologically recent, chemically untreated black peat granules ranging in diameter from 0.1 mm to 10 mm said matrix being contained by a structure which admits sea water but retains the granules, the matrix having a degree of decomposition in the range of thirty-five percent to fifty-five percent, and the carrier material comprising up to ninety-nine percent of the matrix by weight; providing relative motion between the matrix and sea water to adsorb the uranium ions onto the matrix and to thereby concentrate the uranium ions for subsequent removal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-06 | 1985-01-05 | 1985-07-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-06 | 1989-01-05 | 1989-07-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-06 | 1993-01-05 | 1993-07-07 | $7700.00 | Window Closed / Lapsed |