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Solvent extraction studies of coprocessing flowsheets: Results from Campaign 6 of the Solvent Extraction Test Facility (SETF)

Technical Report ·
DOI:https://doi.org/10.2172/712832· OSTI ID:712832

A series of five solvent extraction tests were made in the Solvent Extraction Test Facility (SETF) during Campaign 6. Each test used a coprocessing flowsheet that included coextraction-coscrubbing of the heavy metals followed by partial partitioning of the uranium and plutonium into separate uranium and uranium-plutonium products. The separation of the uranium and plutonium was aided by the addition of HNO{sub 2} to the organic backscrub stream. Two of these tests compared the performance of the traditional Purex solvent, tri-n-butyl phosphate (TBP), with a potential replacement, tri-2-ethylhexyl phosphate (TEHP). The remaining three tests were made with a chemically-degraded TBP solvent to compare the effectiveness of two solvent cleanup methods - treatment with silica gel or scrubbing with sodium carbonate and water.

Research Organization:
Oak Ridge National Lab., TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-84OR21400
OSTI ID:
712832
Report Number(s):
ORNL/TM--9961; ON: TI87025893
Country of Publication:
United States
Language:
English