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Separation of high activity nuclear waste into chemically similar fractions. First annual report

Technical Report ·
OSTI ID:6068286
This report summarizes the research performed on the following tasks: (1) Removal of cesium and strontium from acidic waste, (2) Platinum-group metal removal from acidic waste (palladium, rhodium and ruthenium), and (3) rare earth and actinide removal as a group from acidic waste. The elements are to be removed from a commercial nuclear fuel reprocessing liquid waste stream after separation of uranium and plutonium and before the solidification process that encapsulates the residual fission products in a solid permanent underground storage. It is of course understood that the recovery and purification of uranium and plutonium would be the principal reason for commercial reprocessing. The major accomplishment of the project has been the identification of two crown compounds (macrocyclic-polyethers) the first specific for cesium extraction and the second specific for strontium extraction in an organic matrix solution containing TBP, kerosene and liquid anion exchanger Didodecyl naphthalene Sulfonic Acid (DNS). Platinum group metal solvent extraction work has also focused on the removal of Pd from solutions of HNO/sub 3/ and HCl. Three crown compounds and two liquid anion exchange reagents were evaluated in an organic phase consisting primarily of TBP and kerosene. 10 figures, 8 tables.
Research Organization:
South Carolina Univ., Columbia (USA). Dept. of Chemical Engineering
DOE Contract Number:
AS09-81SR10714
OSTI ID:
6068286
Report Number(s):
DOE/SR/10714-1; ON: DE85005007
Country of Publication:
United States
Language:
English

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Related Subjects

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ALCOHOLS
ALKALI METALS
ALKALINE EARTH METALS
CESIUM
DATA
ELEMENTS
EXPERIMENTAL DATA
EXTRACTION
GLYCOLS
HIGH-LEVEL RADIOACTIVE WASTES
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
INORGANIC ACIDS
MANAGEMENT
MATERIALS
METALS
NITRIC ACID
NUMERICAL DATA
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PALLADIUM
PLATINUM METALS
POLYETHYLENE GLYCOLS
POLYMERS
PROCESSING
RADIOACTIVE MATERIALS
RADIOACTIVE WASTE PROCESSING
RADIOACTIVE WASTES
RESEARCH PROGRAMS
SEPARATION PROCESSES
SOLVENT EXTRACTION
STRONTIUM
TRANSITION ELEMENTS
WASTE MANAGEMENT
WASTE PROCESSING
WASTES