Method of separating transplutonium elements from lanthanides in

Details Method of separating transplutonium elements from lanthanides in Method of separating transplutonium elements from lanthanides in

1994-10-05

1996-04-23

Mai, Ngoclan

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Radioactive metal

B01D 1100

Patent

active

055100910

ABSTRACT:
The improved method of separating transplutonium elements from lanthanides comprises the steps of adding an organic solvent containing an N-heterocyclic compound and a hydrophobic anion to an acidic aqueous solution containing both a lanthanide and a transplutonium element (TPE) and then extracting the transplutonium element into the organic phase. The method is capable of selective extraction of TPE without producing liquid wastes, is adapted to the continuous treatment process and yet can be implemented using inexpensive chemicals.

REFERENCES:
patent: 4496523 (1985-01-01), Bonnin et al.
patent: 4867951 (1989-09-01), Smith et al.
patent: 4876232 (1989-10-01), Barkatt
K. L. Nash, A Review of the Basic Chemistry and Recent Developments in Trivalent f-Elements Separations, Solvent Extraction and Ion Exchange, 11(4), 729 (1993).
C. Musikas et al., Properties and Uses of Nitrogen and Sulfur Donors Ligands in Actinide Separations in Actinide Separation, Actinide Separations, edited by J. D. Navratil and W. W. Schulz, ACS Symposium Series 117, American Chemical Society, Washington, D.C. (1980).

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