Third phase formation in nitric acid extraction by n-octyl(phenyl)-n,n-diisobutylcarbamoylmethylphosphine oxide

Journal Article · Tue Mar 01 00:00:00 EST 1994 · Solvent Extraction and Ion Exchange; (United States)

DOI:https://doi.org/10.1080/07366299408918219· OSTI ID:7044785

Nagasaki, S; Wisnubroto, D S; Enokida, Y; Suzuki, A ^[1]

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1. Univ. of Tokyo (Japan)

The third phase formation was studied as a function of n-octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO) and tri-n-butyl phosphate (TBP) concentrations and temperature in the extraction of nitric acid. The concentration fractions of CMPO and TBP in the second and the third phases were determined by gas chromatography. Both CMPO and TBP were found to be enriched in the third phase. The concentrations of nitric acid in the second and the third phases relatively agreed with the calculated concentrations based on the extraction equilibrium constants of nitric acid by CMPO and TBP. The extraction of Np with the third phase formation was also discussed. 21 refs., 4 figs., 3 tabs.

• OSTI ID: 7044785
• Journal Information: Solvent Extraction and Ion Exchange; (United States), Vol. 12:2; ISSN 0736-6299
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ACTINIDE COMPOUNDS
SOLVENT EXTRACTION
NEPTUNIUM COMPOUNDS
EQUILIBRIUM
MATHEMATICAL MODELS
TEMPERATURE DEPENDENCE
CMPO
COMPILED DATA
GAS CHROMATOGRAPHY
NITRIC ACID
RADIOACTIVE WASTE PROCESSING
SOLUTIONS
SOLVENTS
TBP
TRUEX PROCESS
BUTYL PHOSPHATES
CHROMATOGRAPHY
DATA
DISPERSIONS
ESTERS
EXTRACTION
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
MANAGEMENT
MIXTURES
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHINE OXIDES
PHOSPHINES
PHOSPHORIC ACID ESTERS
PHOSPHORUS COMPOUNDS
PROCESSING
RADIOACTIVE WASTE MANAGEMENT
SEPARATION PROCESSES
TRANSURANIUM COMPOUNDS
WASTE MANAGEMENT
WASTE PROCESSING
400105* - Separation Procedures
052001 - Nuclear Fuels- Waste Processing