Solvent extraction of uranium (VI), thorium (IV) with petroleum sulfoxides (PSO)
- 1. Dept. of Nuclear Science, Fudan Univ., Shanghai (China)
- 2. Dept. of Chemistry, Tongji Univ., Shanghai (China)
Description
The influence of the temperature, as well as the concentrations of nitric acid, petroleum sulfoxides (PSO), salting-out agent and metal ions on the distribution ratio of uranium (VI), thorium (IV) has been systematically studied. It is found that the extraction regularity of PSO is similar to that of DOSO and TBP. Both uranium (VI) and thorium (IV) exhibit the maximum distribution ratios at 5-6 mol/l HNO3 and 3-4 mol/l HNO3, respectively. The extracted compounds are determined to be UO2(NO3)2 · 2PSO and Th(NO3)4 · 3PSO, respectively. The distribution ratios of uranium (VI) and thorium (IV) increase rapidly in the presence of salting-out agent. The extraction enthalpies of uranium (VI) and thorium (IV) with PSO are ΔHu = -26 kJ/mol and ΔHTh = -29 kJ/mol
Additional details
Publishing Information
- Journal Title
- Journal of Nuclear and Radiochemistry
- Journal Volume
- 14
- Journal Issue
- 4
- Journal Page Range
- p. 226-231.
- ISSN
- 0253-9950
- CODEN
- HHHHDH
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 24056326
- Subject category
- S38: RADIATION CHEMISTRY, RADIOCHEMISTRY AND NUCLEAR CHEMISTRY;
- Descriptors DEI
- CONCENTRATION RATIO; DISTRIBUTION FUNCTIONS; ENTHALPY; NITRIC ACID; SALTING-OUT AGENTS; SOLVATION; SOLVENT EXTRACTION; SULFOXIDES; TEMPERATURE DEPENDENCE; THORIUM COMPLEXES; URANYL COMPLEXES
- Descriptors DEC
- ACTINIDE COMPLEXES; COMPLEXES; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; NITROGEN COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC SULFUR COMPOUNDS; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SEPARATION PROCESSES; THERMODYNAMIC PROPERTIES; URANIUM COMPLEXES