THE EFFECT OF ACIDITY AND REDUCING AGENTS ON RUTHENIUM SOLVENT EXTRACTION BY TRIBUTYL PHOSPHATE IN THE 25 PROCESS

Technical Report · Wed Dec 15 04:00:00 EST 1954

OSTI ID:4324730

Flanary, J R; Frashier, L D

Results of tracer studies suggest that, in tributyl phosphate extraction processes designed to recover and purify fissionable material, minimum rutherium extraction should be obtained from feeds at least 2 M in nitric acid or at least 1 M acid-deficient. Ruthenium decontamination was decreased by preheating the feed and increased by pretreatment with reducing agents. A pretreatment using 0.06 M ferrous ion and 0.6 M urea with 1 hr simmering at 85 deg C should increase rutherium decontamination about 10-fold in the 25 Process. If other process considerations dictate the use of a lowacid feed, decontamination from rutheninm may be improved by using 3 M nitric acid as the scrubbing soiution. Apparently, the scrubbing process is quite time-dependent; a solvent holdup time of about 15 min may be needed in the scrub section for maximum decontamination. (auth)

• Research Organization: Oak Ridge National Lab., Tenn.
• DOE Contract Number: W-7405-ENG-26
• NSA Number: NSA-12-010475
• OSTI ID: 4324730
• Report Number(s): ORNL-1801(Del.)
• Country of Publication: United States
• Language: English

Related Subjects

ACIDITY
BUTYL PHOSPHATES
CHEMISTRY
DECONTAMINATION
FISSIONABLE MATERIALS
HEAT TREATMENTS
IMPURITIES
IONS
IRON
NITRIC ACID
QUANTITY RATIO
RECOVERY
REDUCTION
RUTHENIUM
SOLVENT EXTRACTION
TBP
TEMPERATURE
TRACER TECHNIQUES
UREA