THE SOLVENT EXTRACTION OF NITROSYLRUTHENIUM BY TRILAURYLAMINE IN NITRATE SYSTEM. Summary Report for the Period, July 1, 1960 to March 31, 1962

Technical Report · Fri Jun 01 00:00:00 EDT 1962

OSTI ID:4819049

Skavdahl, R E; Mason, E A

An investigation of the solvent extraction characteristics of the nitro and nitrato complexes of nitrosylruthenium in nitric acid- sodium nitrate aqueous media was conducted. As the organic extractant phase, a solution of trilaurylamine (TLA) in toluene was utilized. In addition to the usual process parameter variation tyne of experiment, a rapid dilution type of experiment was used extensively to determine qualitative and semiquantitative results regarding the degree of extractability and concentration of the more extractable species of the nitrato complexes of nitrosylruthenium. It was found that the acids of the tetra-nitrato and pentanitrato complexes were the more extractable species for that set of complexes and that the acid of the penta-nitrato complex was the more extractable of the two. It was observed that for freshly prepared solutions, the dinitro complex of nitrosylruthenium was much more extractable than the gross nitrato complexes solutions. Nitro complexes in general, and the dinitro complex in particular, may be the controlling agent in ruthenium decontamination of spent nuclear fuel processed by solvent extraction methods. The experimental results from both sets of complexes could be more meaningfully correlated on the basis of unbound nitric acid concentration in the organic phase than on the basis of nitric acid concentration in the aqueous phase. The extraction of nitric acid by TLA from nitric acid-sodium nitrate aqueous solutions was investigated and the results correlated on the basis of activity of the undissociated nitric acid in the aqueous phase. (auth)

• Research Organization: Massachusetts Inst. of Tech., Cambridge
• DOE Contract Number: W-7405-ENG-26; SUBCONTRACT 1327
• NSA Number: NSA-16-023791
• OSTI ID: 4819049
• Report Number(s): TID-16139; MITNE-20
• Resource Relation: Other Information: For Oak Ridge National Lab., Tenn. Orig. Receipt Date: 31-DEC-62
• Country of Publication: United States
• Language: English

Related Subjects

CHEMISTRY
ACIDS
AMINES
BURNUP
CONCENTRATION
DECONTAMINATION
FUELS
LAURIC ACID
MEASURED VALUES
NITRATES
NITRIC ACID
NITROGEN COMPOUNDS
NITROGEN OXIDES
NITROSYL RADICALS
ORGANIC ACIDS
QUANTITATIVE ANALYSIS
QUANTITY RATIO
RUTHENIUM COMPLEXES
RUTHENIUM COMPOUNDS
SEPARATION PROCESSES
SODIUM NITRATES
SOLUTIONS
SOLVENT EXTRACTION
TESTING
TOLUENE
WATER