scholarly journals Solvent Extraction Studies for the Separation of Trivalent Actinides from Lanthanides with a Triazole-functionalized 1,10-phenanthroline Extractant

2020 ◽  
Vol 38 (7) ◽  
pp. 719-734 ◽  
Author(s):  
Peter Zsabka ◽  
Tomas Opsomer ◽  
Karen Van Hecke ◽  
Wim Dehaen ◽  
Andreas Wilden ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Trivalent Actinides

ChemInform Abstract: SEPARATION OF TRIVALENT ACTINIDES FROM LANTHANIDES BY SOLVENT EXTRACTION

1979 ◽  
Vol 10 (38) ◽  
Author(s):  
G. B. KASTING ◽  
E. K. HULET ◽  
J. A. HEPPERT ◽  
J. F. WILD
Keyword(s):  
Solvent Extraction ◽  
Trivalent Actinides

An overview and historical look back at the solvent extraction using nitrogen donor ligands to extract and separate An(III) from Ln(III)

2008 ◽  
Vol 96 (4-5) ◽  
Author(s):  
Christian Ekberg ◽  
Anna Fermvik ◽  
Teodora Retegan ◽  
Gunnar Skarnemark ◽  
M. R. S. Foreman ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Nuclear Waste ◽  
High Selectivity ◽  
Donor Ligands ◽  
Nitrogen Donor Ligands ◽  
Nitrogen Donor ◽  
Trivalent Actinides ◽  
Radiolytic Stability ◽  
Separation Factors ◽  
High Separation

The partitioning of minor trivalent actinides (An) from lanthanides (Ln) is one of the challenges in the chemical treatment of nuclear waste. The optimal ligand to carry out the separation of An(III) and Ln(III) using solvent extraction has to meet several important criteria: high selectivity towards the solute, chemical and radiolytic stability, stripping possibilities and recycling of the organic phase, high separation factors and good distribution ratio, to name just a few of them. A chronological line can be drawn along the development of each extraction ligand family and some milestones are emphasized in this overview.Further developments in organic synthesis of extracting ligands are expected.

scholarly journals Solvent extraction of trivalent actinides with di(2-ethylhexyl) phosphoric acid

2011 ◽  
Vol 1 (1) ◽  
pp. 157-160
Author(s):  
R. Takayama ◽  
K. Ooe ◽  
W. Yahagi ◽  
H. Fujisawa ◽  
Y. Komori ◽  
...  
Keyword(s):  
Solvent Extraction ◽  
Phosphoric Acid ◽  
Extraction Constant ◽  
Tetrad Effect ◽  
Batch Method ◽  
Ionic Radii ◽  
Lanthanide Series ◽  
Trivalent Actinides ◽  
Extraction Constants

Abstract We carried out solvent extraction on the trivalent actinides of Am, Cm, Cf, and Fm and the lanthanides (except Pm) using di(2-ethylhexyl)phosphoric acid (HDEHP) in benzene by a batch method. The extraction constants of the HDEHP complexes for these elements were determined systematically under identical conditions. The tetrad effect was clearly observed in the variation of the extraction constants of the lanthanide series. We found that the extraction constant for Fm(III) is much smaller than that for Dy(III), which have similar ionic radii. The extraction constants for Am(III), Cm(III), and Cf(III) are similar to those for corresponding Ln(III) having similar ionic radii. Two possibilities that account for the lower extraction constant of Fm(III) is suggested.

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