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

Journal Article · · Solvent Extraction and Ion Exchange; (United States)
; ; ;  [1]
  1. Univ. of Tokyo (Japan)
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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), Journal Name: Solvent Extraction and Ion Exchange; (United States) Vol. 12:2; ISSN 0736-6299; ISSN SEIEDB
Country of Publication:
United States
Language:
English

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ACTINIDE COMPOUNDS
BUTYL PHOSPHATES
CHROMATOGRAPHY
CMPO
COMPILED DATA
DATA
DISPERSIONS
EQUILIBRIUM
ESTERS
EXTRACTION
GAS CHROMATOGRAPHY
HYDROGEN COMPOUNDS
INFORMATION
INORGANIC ACIDS
MANAGEMENT
MATHEMATICAL MODELS
MIXTURES
NEPTUNIUM COMPOUNDS
NITRIC ACID
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC PHOSPHORUS COMPOUNDS
OXYGEN COMPOUNDS
PHOSPHINE OXIDES
PHOSPHINES
PHOSPHORIC ACID ESTERS
PHOSPHORUS COMPOUNDS
PROCESSING
RADIOACTIVE WASTE MANAGEMENT
RADIOACTIVE WASTE PROCESSING
SEPARATION PROCESSES
SOLUTIONS
SOLVENT EXTRACTION
SOLVENTS
TBP
TEMPERATURE DEPENDENCE
TRANSURANIUM COMPOUNDS
TRUEX PROCESS
WASTE MANAGEMENT
WASTE PROCESSING