Published June 2001 | Version v1
Journal article Metadata-only

Modelling of the extraction of uranium with supercritical carbon dioxide

Creators

  • 1. School of Chemistry, University of Leeds, Leeds LS2 9JT (United Kingdom)
  • 2. Research and Technology, BNFL, Seascale, Sellafield, Cumbria (United Kingdom)
  • 3. Department of Chemistry, University of Idaho, ID (United States)
  • 4. Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki (Japan)

Description

A model is presented for the analysis of the results of extraction of uranium in a flow systems by supercritical fluid modified with tributylphosphate from a nitric acid matrix in which the extraction is not limited by the solubility of the uranium species. The model used is that of diffusion out of a sphere into a medium in which the extracted uranium is infinitely dilute. Although not a completely accurate representation of the liquid-supercritical fluid system, the model is shown to be a reasonable representation and some conclusions discussed. (author)

Additional details

Publishing Information

Journal Title
Journal of Nuclear Science and Technology (Tokyo)
Journal Volume
38
Journal Issue
6
Journal Page Range
p. 433-438
ISSN
0022-3131

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
32041994
Subject category
S11: NUCLEAR FUEL CYCLE AND FUEL MATERIALS;
Descriptors DEI
CARBON DIOXIDE; COMPLEXES; FLOW RATE; NITRIC ACID; OPTIMIZATION; REPROCESSING; SIMULATION; SUPERCRITICAL GAS EXTRACTION; TBP; URANIUM
Descriptors DEC
ACTINIDES; BUTYL PHOSPHATES; CARBON COMPOUNDS; CARBON OXIDES; CHALCOGENIDES; ELEMENTS; ESTERS; EXTRACTION; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; METALS; NITROGEN COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC PHOSPHORUS COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHOSPHORIC ACID ESTERS; SEPARATION PROCESSES; SOLVENT EXTRACTION

Optional Information

Notes
12 refs., 7 figs., 2 tabs.