Method for extracting lanthanides and actinides from acid solutions by modification of Purex solvent

Patent · Tue Mar 04 04:00:00 EST 1986

OSTI ID:7158710

Horwitz, E P; Kalina, D G

A process is described for the recovery of actinide and lanthanide values from aqueous solutions with an extraction solution containing an organic extractant having the formula as shown in a diagram where [phi] is phenyl, R[sup 1] is a straight or branched alkyl or alkoxyalkyl containing from 6 to 12 carbon atoms and R[sup 2] is an alkyl containing from 3 to 6 carbon atoms and phase modifiers in a water-immiscible hydrocarbon diluent. The addition of the extractant to the Purex process extractant, tri-n-butylphosphate in normal paraffin hydrocarbon diluent, will permit the extraction of multivalent lanthanide and actinide values from 0.1 to 12.0 molar acid solutions. 6 figs.

• DOE Contract Number: W-31109-ENG-38
• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): US 4574072; A
• Application Number: PPN: US 6-612199
• OSTI ID: 7158710
• Country of Publication: United States
• Language: English

Related Subjects

050800* -- Nuclear Fuels-- Spent Fuels Reprocessing
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
ACTINIDES
ADDITIVES
CHEMICAL COMPOSITION
DISPERSIONS
ELEMENTS
EXTRACTION
METALS
MIXTURES
MOLECULAR STRUCTURE
PROCESS SOLUTIONS
PUREX PROCESS
RARE EARTHS
REPROCESSING
SEPARATION PROCESSES
SOLUTIONS
SOLVENT EXTRACTION