Published July 1977
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Solvent extraction of irradiated neptunium targets. II. Flowsheet development
Description
Development of a solvent extraction flowsheet for processing 237Np and 238Pu at the Savannah River Plant as a possible replacement for anion exchange processing is described. The major difficulty in solvent extraction processing is maintaining neptunium in the extractable M(IV) or M(VI) valence states prior to extraction. Miniature mixer-settler tests with 7.5 vol percent TBP showed that a sidestream of ferrous sulfamate to reduce Np(V) to Np(IV) in the first bank of mixer-settler contactors greatly decreased loss of neptunium to waste. A nitrite sidestream to catalytically oxidize Np(V) to Np(VI) did not prevent high losses of neptunium
Availability note (English)
MF available from INIS under the Report Number; Available from NTIS., PC A02/MF A01.
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Additional details
Publishing Information
- Imprint Pagination
- 18 p.
- Report number
- DP--1460
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 9351696
- Subject category
- S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS; S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
- Descriptors DEI
- FLOWSHEETS; IRON COMPOUNDS; NEPTUNIUM; NEPTUNIUM 237; ORGANIC SULFUR COMPOUNDS; PLUTONIUM; PLUTONIUM 238; SOLVENT EXTRACTION; SULFONIC ACIDS; TBP
- Descriptors DEC
- ACTINIDE NUCLEI; ACTINIDES; ALPHA DECAY RADIOISOTOPES; BUTYL PHOSPHATES; DIAGRAMS; ELEMENTS; ESTERS; EVEN-EVEN NUCLEI; HEAVY NUCLEI; ISOTOPES; METALS; NEPTUNIUM ISOTOPES; NUCLEI; ODD-EVEN NUCLEI; ORGANIC ACIDS; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; PHOSPHORIC ACID ESTERS; PLUTONIUM ISOTOPES; RADIOISOTOPES; SEPARATION PROCESSES; TRANSITION ELEMENT COMPOUNDS; TRANSURANIUM ELEMENTS; YEARS LIVING RADIOISOTOPES