Plutonium and neptunium extraction process
Abstract
Abstract A PROCESS OF SEPARATING PLUTONIUM AND NEPTUNIUM VALUES FROM AQUEOUS ACID WASTE SOLUTIONS CONTAINING THESE AND OTHER VALUES BY ADDING HYDRAZINE TO THE AQUEOUS WASTE SOLUTION TO REDUCE SELECTIVELY THE NEPTUNIUM TO THE TETRAVALENT STATE AND CONTACTING THE SOLUTION WITH A WATER IMMISCIBLE ORGANIC SOLUTION OF DIBUTYLBUTYL PHOSPHONATE TO EXTRACT THE TETRAVALENT NEPTUNIUM AND PLUTONIUM VALUES PLUS ZIRCONIUM, CERIUM AND RUTHENIUM VALUES PRESENT. AFTER SEPARATING THE ORGANIC PHASE FROM THE AQUEOUS WASTE SOLUTION, THE COEXTRACTED ZIRCONIU, CERI- UM AND RUTHERNIUM VALUES ARE SCRUBBED FROM THE ORGANIC PHASE BEFORE STRIPPING THE NEPTUNIUM AND PLUTONIUM VALUES WITH AN AQUEOUS OXALIC ACID STRIPPING SOLUTION.
Inventors
- 👤 Wallace W Schulz
Bibliographic Details
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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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |