Futuristic back-end of the nuclear fuel cycle with the partitioning of minor actinides

Madic, C.; Boullis, Bernard; Baron, Pascal; Testard, Fabienne; Hudson, Michael J.; Liljenzin, Jan‐Olov; Christiansen, Birgit; Ferrando, M.; Facchini, Alessandro; Geist, Andreas; Modolo, Giuseppe; Espartero, A.G.; Mendoza, Javier de

doi:10.1016/j.jallcom.2007.05.051

Cited by 94 publications

(82 citation statements)

References 6 publications

(6 reference statements)

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“…1,2 This interest is due to the fact that if the Ln can be separated from the SNF (Spent Nuclear Fuel) this will make the possibility of transmutation of the longlived An ions much more accessible. 3 Transmutation is the process of changing one atom into another through nuclear reactions. In this case it would entail isolating the An species and placing in a high neutron flux in order to initiate fission, thereby forming short-lived nuclides that present less of a radiological issue.…”

Section: Introductionmentioning

confidence: 99%

Lanthanide Speciation in Potential SANEX and GANEX Actinide/Lanthanide Separations Using Tetra-N-Donor Extractants

et al. 2013

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Section: Introductionmentioning

confidence: 99%

Lanthanide Speciation in Potential SANEX and GANEX Actinide/Lanthanide Separations Using Tetra-N-Donor Extractants

et al. 2013

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“…Once removed, these elements can be fissioned or transmuted into shorterlived radionuclides by neutron bombardment in fast reactors or dedicated transmuters, enabling safer geological disposal of the remaining waste [3,4]. A highly selective solvent extraction process (SANEX process) has been 2 (10) proposed for the future reprocessing of waste solutions produced in the PUREX process, involving the selective separation of the minor actinides from the lanthanides and fission products which make up the bulk of the waste [5,6]. A large number of ligands have been synthesized and tested in recent years as potential candidates in such a process [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Influence of diluent alkyl substitution on the extraction of Am(III) and Eu(III) by a 6,6´-bis(1,2,4-triazin-3-yl)-2,2´-bipyridine ligand dissolved in alkylated cyclohexanone diluents

et al. 2012

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Several alkylated cyclohexanones were investigated as potential diluents for the selective extraction of Am(III) from Eu(III) from nitric acid solutions by the CyMe4-BTBP ligand. No significant extraction of either of the metal ions was observed for these diluents themselves. In the extractions from 1 M HNO3, 3-methylcyclohexanone and 4-methylcyclohexanone gave comparable results to cyclohexanone whereas in the extractions from 4 M HNO3, 2-methylcyclohexanone, 3-methylcyclohexanone and 4-methylcyclohexanone all gave superior results. For the monomethylated diluents, D Am and SFAm/Eu decreased in the order of alkyl substitution 2 > 4 ∼ 3. However, alkyl substitution of cyclohexanone significantly slows down the extraction kinetics compared to cyclohexanone, and the position of alkyl substitution was found to play an important role in the solvents properties. 3-Methylcyclohexanone was identified as the most promising of the diluents.

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“…Jarvinen et al [15] reported that a separation factor of 1000 was achieved for Am(III) and Eu(III) by combining extraction with dicyclohexyl dithiophosphinic acid and TBP. Modolo et al [6,[16][17][18] found that there were no detectable extraction for Am(III) or Eu(III) from nitric acid medium when three kinds of extractants, diaryl dithiophosphinic acids (aryl = C 6 H 5 − , ClC 6 H 4 − , CH 3 C 6 H 4 − ), were used alone, but high separation factors were achieved by means of the synergistic effects of di(chlorophenyl) dithiophosphinic acid with tributylphosphate (SF Am/Eu > 20), di(chlorophenyl) dithiophosphinic acid with trioctylphosphine oxide (SF Am/Eu = 182), or di(chlorophenyl) dithiophosphinic acid with tris(2-ethylhexyl)phosphate (SF Am/Eu > 2000). Three kinds of dialkyl dithiophosphinic acids (alkyl = n-octyl, 1-methylheptyl, 2-ethylhexyl) were synthesized and very high separation factors (SF Am/Eu ≈ 1 × 10 4 ) were obtained by Tian et al [7].…”

Section: Introductionmentioning

confidence: 99%

Extraction of Am(III) and lanthanides(III) with organo dithiophosphinic acids

Qichu¹,

Chang

et al. 2008

Radiochimica Acta

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Summary. Extraction of Am(III) and Ln(III) from NaClO 4 medium has been investigated with di(2-ethylhexyl) dithiophosphoric acid, di(2-ethylhexyl) monothiophosphoric acid, di(2-ethylhexyl) monothiophosphinic acid, octylphenyl dithiophosphinic acid and 11 kinds of dialkyl dithiophosphinic acids (alkyl = hexyl, heptyl, octyl, nonyl, 2-ethylhexyl, 1-methylheptyl, phenyl, chlorophenyl, methylphenyl, 2,5-dimethylphenyl, and 3,5-dichloro-4-methylphenyl) in xylene. The effect of chemical structures of those extractants on separation capability has been studied. The relationship between the slope value of the lg D − pH and extraction conditions can be described as: lg S = a lg(C HA /CIn the presence of macro amounts of Eu(ClO 4 ) 3 , the formula, lg SF Am/Eu = B − 2 lg(C HL − D Eu /(D Eu + 1)C Eu ), can well describe the relationship between separation factor and the extraction condition. A high separation factor (SF Am/Eu = 2500) is obtained by solvent extraction from 1 mol/L NaNO 3 solution with 0.5 mol/L di(2-ethylhexyl) dithiophosphinic acid in toluene.

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Futuristic back-end of the nuclear fuel cycle with the partitioning of minor actinides

Cited by 94 publications

References 6 publications

Lanthanide Speciation in Potential SANEX and GANEX Actinide/Lanthanide Separations Using Tetra-N-Donor Extractants

Lanthanide Speciation in Potential SANEX and GANEX Actinide/Lanthanide Separations Using Tetra-N-Donor Extractants

Influence of diluent alkyl substitution on the extraction of Am(III) and Eu(III) by a 6,6´-bis(1,2,4-triazin-3-yl)-2,2´-bipyridine ligand dissolved in alkylated cyclohexanone diluents

Extraction of Am(III) and lanthanides(III) with organo dithiophosphinic acids

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