Published 2013
| Version v1
Journal article
Contribution of extraction isotherms modeling based on the Mikulin-Sergievskii-Dannus approach to the speciation of plutonium(IV) in TBP 30%/dodecane
Creators
- 1. CEA Marcoule, DEN/DRCP, Bagnols-sur-Ceze (France)
- 2. AREVA NC, BU Recyclage/DIRP/RDP, Paris La Defense (France)
Description
In this study, a thermodynamic model based on Mikulin and Sergievskii-Dannus equations to calculate activity coefficients in both organic and aqueous phases was used to model plutonium(IV), nitric acid and water extraction by 30% TBP in dodecane. The speciation of Pu(IV) in the organic phase was determined via extraction isotherms modeling. The best agreement between experimental and calculated plutonium distribution ratios was obtained by considering two Pu(IV) complexes in the organic phase: Pu(NO3)4(TBP)2 and Pu(NO3)4(TBP)3. (orig.)
Additional details
Publishing Information
- Journal Title
- Radiochimica Acta
- Journal Volume
- 101
- Journal Issue
- 6
- Series
- Special issue: Speciation
- Journal Page Range
- p. 373-377
- ISSN
- 0033-8230
- CODEN
- RAACAP
INIS
- Country of Publication
- Germany
- Country of Input or Organization
- Germany
- INIS RN
- 44080413
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
- Descriptors DEI
- AQUEOUS SOLUTIONS; CHEMICAL STATE; DODECANE; EQUILIBRIUM; ISOTHERMS; ISOTOPE RATIO; NITRIC ACID; ORGANIC SOLVENTS; PLUTONIUM COMPLEXES; PUREX PROCESS; SOLVENT EXTRACTION; TBP; VALENCE
- Descriptors DEC
- ACTINIDE COMPLEXES; ALKANES; BUTYL PHOSPHATES; COMPLEXES; DIMENSIONLESS NUMBERS; DISPERSIONS; ESTERS; EXTRACTION; HOMOGENEOUS MIXTURES; HYDROCARBONS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; MIXTURES; NITROGEN COMPOUNDS; NONAQUEOUS SOLVENTS; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXYGEN COMPOUNDS; PHOSPHORIC ACID ESTERS; REPROCESSING; SEPARATION PROCESSES; SOLUTIONS; SOLVENTS; TRANSURANIUM COMPLEXES