Distribution of thorium during full loading of carboxylic acid cation exchange resins with uranium from nitrate solutions at 30 and 40/sup 0/C
The recycle of /sup 233/U for the refabrication of fuel elements for a high-temperature gas-cooled reactor will require an assessment of chemical specifications for impurities in the uranyl nitrate product stream from the fuel reprocessing facility. The behavior of thorium, as an impurity in this simulated process stream, was investigated under equilibrium conditions during full loading of carboxylic acid cation exchange resins with uranium. Mathematical correlations of the data indicate a complex metathetical reaction for thorium distribution between the two phases. Activity coefficient ratios for thorium distribution were calculated by a simple empirical relationship with thorium concentrations in the aqueous phase over the nitrate ion concentration range of approx. 0.2 to 2.0 N. Estimates of thorium behavior and its separation from uranium can be calculated from these values and derived constants for the reaction system. In all tests, thorium was preferentially absorbed on the resin with separation factors, relative to uranium concentrations, greater than unity.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6442310
- Report Number(s):
- ORNL/TM-6613
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
050800* -- Nuclear Fuels-- Spent Fuels Reprocessing
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTINIDES
ALPHA DECAY RADIOISOTOPES
CORRELATIONS
ELEMENTS
EVEN-ODD NUCLEI
FUEL CYCLE
GAS COOLED REACTORS
GRAPHITE MODERATED REACTORS
HEAVY NUCLEI
HTGR TYPE REACTORS
ION EXCHANGE MATERIALS
ISOTOPES
METALS
NUCLEI
RADIOISOTOPES
REACTORS
SEPARATION PROCESSES
SIMULATION
THORIUM
THORIUM CYCLE
URANIUM
URANIUM 233
URANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTINIDES
ALPHA DECAY RADIOISOTOPES
CORRELATIONS
ELEMENTS
EVEN-ODD NUCLEI
FUEL CYCLE
GAS COOLED REACTORS
GRAPHITE MODERATED REACTORS
HEAVY NUCLEI
HTGR TYPE REACTORS
ION EXCHANGE MATERIALS
ISOTOPES
METALS
NUCLEI
RADIOISOTOPES
REACTORS
SEPARATION PROCESSES
SIMULATION
THORIUM
THORIUM CYCLE
URANIUM
URANIUM 233
URANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES