THE EFFECT OF ACIDITY AND REDUCING AGENTS ON RUTHENIUM SOLVENT EXTRACTION BY TRIBUTYL PHOSPHATE IN THE 25 PROCESS
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.)
- Resource Relation:
- Other Information: Decl. with deletions Mar. 6, 1958. Orig. Receipt Date: 31-DEC-58
- Country of Publication:
- United States
- Language:
- English
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