Study of bidentate compounds for separation of actinides from commercial LWR reprocessing wastes
- 1 May 1979
- report
- Published by Office of Scientific and Technical Information (OSTI)
Abstract
Dihexyl-N,N-diethylcarbamylmethylenephosphonate (DHDECMP) was used as an extractant for actinides out of commercial LWR reprocessing wastes. Methods of purifying the compound were developed and physical properties of the purified material obtained. Batch extraction studies show DHDECMP extracts trivalent and higher valent actinides from moderately concentrated nitric acid solutions. Work on synthetic LWR waste solutions showed actinides and lanthanides partition from the fission product matrix. A mixer--settler run on actual LWR waste reduced Pu and Am levels to 279 and 10.8 ng/mL, respectively. When coupled with Purex extractions, this represents a combined removal of greater than 99.99% of the Pu and greater than 99.9% of the Am initially present.Keywords
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