Diglycolamide-functionalized task specific ionic liquids for nuclear waste remediation: extraction, luminescence, theoretical and EPR investigations

A Sengupta, P.K. Mohapatra, R.M. Kadam, D. Manna, T.K. Ghanty, M. Iqbal, Jurriaan Huskens, Willem Verboom

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Abstract

A 3.6 × 10−2 M solution of a diglycolamide-functionalized task specific ionic liquid (DGA-TSIL) in [C4mim][NTf2] was used for the extraction of actinides (mainly Am) and other elements present in high level nuclear waste. The extraction of Eu3+ was relatively higher than that of Am3+ conforming to the mechanism displayed by other diglycolamide extractants such as TODGA (tetraoctyl diglycolamide). The distribution ratio values decreased in the presence of simulated high level waste (SHLW) as compared to those obtained with pure tracers. The nature of the extracted species was established by the slope analysis method which suggested 1:2 species for the extraction of Am3+ and Eu3+. Calculation of the Judd–Ofelt parameters from the luminescence data of the Eu3+ complexes indicated that the structure of the extracted complexes exhibits S4 symmetry. Theoretical calculations showed virtually no difference between the structures of the complexes of Am3+ and Eu3+. The nature of the radiolytic degradation products was analyzed by electron paramagnetic resonance (EPR) spectroscopic measurements revealing the presence of alkyl imidazolium and methyl radicals.
Original languageUndefined
Pages (from-to)46613-46623
Number of pages11
JournalRSC advances
Volume4
Issue number87
DOIs
Publication statusPublished - 2014

Keywords

  • METIS-308184
  • IR-95048

Cite this

Sengupta, A ; Mohapatra, P.K. ; Kadam, R.M. ; Manna, D. ; Ghanty, T.K. ; Iqbal, M. ; Huskens, Jurriaan ; Verboom, Willem. / Diglycolamide-functionalized task specific ionic liquids for nuclear waste remediation: extraction, luminescence, theoretical and EPR investigations. In: RSC advances. 2014 ; Vol. 4, No. 87. pp. 46613-46623.
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abstract = "A 3.6 × 10−2 M solution of a diglycolamide-functionalized task specific ionic liquid (DGA-TSIL) in [C4mim][NTf2] was used for the extraction of actinides (mainly Am) and other elements present in high level nuclear waste. The extraction of Eu3+ was relatively higher than that of Am3+ conforming to the mechanism displayed by other diglycolamide extractants such as TODGA (tetraoctyl diglycolamide). The distribution ratio values decreased in the presence of simulated high level waste (SHLW) as compared to those obtained with pure tracers. The nature of the extracted species was established by the slope analysis method which suggested 1:2 species for the extraction of Am3+ and Eu3+. Calculation of the Judd–Ofelt parameters from the luminescence data of the Eu3+ complexes indicated that the structure of the extracted complexes exhibits S4 symmetry. Theoretical calculations showed virtually no difference between the structures of the complexes of Am3+ and Eu3+. The nature of the radiolytic degradation products was analyzed by electron paramagnetic resonance (EPR) spectroscopic measurements revealing the presence of alkyl imidazolium and methyl radicals.",
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year = "2014",
doi = "10.1039/C4RA05798H",
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Diglycolamide-functionalized task specific ionic liquids for nuclear waste remediation: extraction, luminescence, theoretical and EPR investigations. / Sengupta, A; Mohapatra, P.K.; Kadam, R.M.; Manna, D.; Ghanty, T.K.; Iqbal, M.; Huskens, Jurriaan; Verboom, Willem.

In: RSC advances, Vol. 4, No. 87, 2014, p. 46613-46623.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Diglycolamide-functionalized task specific ionic liquids for nuclear waste remediation: extraction, luminescence, theoretical and EPR investigations

AU - Sengupta, A

AU - Mohapatra, P.K.

AU - Kadam, R.M.

AU - Manna, D.

AU - Ghanty, T.K.

AU - Iqbal, M.

AU - Huskens, Jurriaan

AU - Verboom, Willem

PY - 2014

Y1 - 2014

N2 - A 3.6 × 10−2 M solution of a diglycolamide-functionalized task specific ionic liquid (DGA-TSIL) in [C4mim][NTf2] was used for the extraction of actinides (mainly Am) and other elements present in high level nuclear waste. The extraction of Eu3+ was relatively higher than that of Am3+ conforming to the mechanism displayed by other diglycolamide extractants such as TODGA (tetraoctyl diglycolamide). The distribution ratio values decreased in the presence of simulated high level waste (SHLW) as compared to those obtained with pure tracers. The nature of the extracted species was established by the slope analysis method which suggested 1:2 species for the extraction of Am3+ and Eu3+. Calculation of the Judd–Ofelt parameters from the luminescence data of the Eu3+ complexes indicated that the structure of the extracted complexes exhibits S4 symmetry. Theoretical calculations showed virtually no difference between the structures of the complexes of Am3+ and Eu3+. The nature of the radiolytic degradation products was analyzed by electron paramagnetic resonance (EPR) spectroscopic measurements revealing the presence of alkyl imidazolium and methyl radicals.

AB - A 3.6 × 10−2 M solution of a diglycolamide-functionalized task specific ionic liquid (DGA-TSIL) in [C4mim][NTf2] was used for the extraction of actinides (mainly Am) and other elements present in high level nuclear waste. The extraction of Eu3+ was relatively higher than that of Am3+ conforming to the mechanism displayed by other diglycolamide extractants such as TODGA (tetraoctyl diglycolamide). The distribution ratio values decreased in the presence of simulated high level waste (SHLW) as compared to those obtained with pure tracers. The nature of the extracted species was established by the slope analysis method which suggested 1:2 species for the extraction of Am3+ and Eu3+. Calculation of the Judd–Ofelt parameters from the luminescence data of the Eu3+ complexes indicated that the structure of the extracted complexes exhibits S4 symmetry. Theoretical calculations showed virtually no difference between the structures of the complexes of Am3+ and Eu3+. The nature of the radiolytic degradation products was analyzed by electron paramagnetic resonance (EPR) spectroscopic measurements revealing the presence of alkyl imidazolium and methyl radicals.

KW - METIS-308184

KW - IR-95048

U2 - 10.1039/C4RA05798H

DO - 10.1039/C4RA05798H

M3 - Article

VL - 4

SP - 46613

EP - 46623

JO - RSC advances

JF - RSC advances

SN - 2046-2069

IS - 87

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