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The PUREX process was invented by Herbert H. Anderson and Larned B. Asprey at the Metallurgical Laboratory at the University of Chicago, as part of the Manhattan Project under Glenn T. Seaborg; their patent "Solvent Extraction Process for Plutonium" filed in 1947, [14] mentions tributyl phosphate as the major reactant which accomplishes the ...
The first reprocessing approach is based on the PUREX (Plutonium Uranium Reduction EXtraction) process, which is the standard and mature technology applied worldwide to recover uranium and plutonium from spent nuclear fuel at industrial scale. Following the dissolution of the spent fuel in nitric acid and the removal of uranium and plutonium ...
REDOX, PUREX: Shut down 1944 1988 Military Savannah River Site: South Carolina: LWR PUREX: Shut down 5000 1952 2002 Civil West Valley LWR PUREX: Shut down 300 1966 1972 Civil Barnwell LWR Finished; never entered service 1500 INL LWR Shut down Morris Operation: Morris, Illinois: Construction halted; never entered service, completion proposed ...
The UREX process is a PUREX process which has been modified to prevent the plutonium being extracted. This can be done by adding a plutonium reductant before the first metal extraction step. In the UREX process, ~99.9% of the uranium and >95% of technetium are separated from each other and the other fission products and actinides. The key is ...
The plant used PUREX chemistry (based on tributyl phosphate (TBP)) to extract plutonium and uranium from used nuclear fuel originating primarily from Magnox reactors. [1] The plant was originally constructed and operated by the United Kingdom Atomic Energy Authority (UKAEA), but in 1971 control was transferred to British Nuclear Fuels Limited ...
It is also used in nuclear reprocessing as part of the PUREX process. A 15–40% (usually about 30%) solution of tributyl phosphate in kerosene or dodecane is used in the liquid–liquid extraction (solvent extraction) of uranium, plutonium, and thorium from spent uranium nuclear fuel rods dissolved in nitric acid. Liquid extraction can also be ...
La Hague in its early years. The La Hague site was built after the Marcoule site originally for producing plutonium for military purposes. In 1969 the French military, having had a sufficient supply of plutonium for weapons, had no further use of the reprocessing centre.
The Butex process was used (a forerunner to the more efficient Purex process) [49] and the plant operated from 1951 until 1964, with an annual capacity of 300 tonnes (295 L/T) of pile spent fuel, or 750 tonnes (738 L/T) of low burn-up fuel.