Synergistic extraction of radionuclides from fuel debris with a[C2mim][Tf2N]–based extractant

Yuji Yada, Tsuyoshi Arai

Research output: Research - peer-reviewArticle

Abstract

Water contamination with radionuclides has been found to occur during the processing of fuel debris by the submersion method. In this study, we have investigated the collective removal of radionuclides by the solvent extraction method with the ultimate goal of developing a process for treating such contaminated water. Co(II), Ni (II), Sr (II), Zr (IV), Mo(VI), Cs (I), and Nd(III), which are assumed to be present in the fuel debris, are chosen as the target species for the solvent extraction process. Octyl (phenyl)–N,N–diisobutylcarbamoylmethylphosphine oxide(CMPO)–tributyl phosphate (TBP)–[C2mim][Tf2N], which serves as the extractant, exhibits a strong ability to extract Co(II), Ni (II), Sr (II), and Nd(III)at a NaCl concentration of 2.0 mol/dm3, whereas it exhibits high extraction ability towards Co(II), Ni (II), Sr (II), Zr (IV), Cs (I), and Nd(III)at a H3BO4 concentration of 0.1 mol/dm3. This extractant also quickly extracts the radionuclides, allowing extraction equilibrium to be reached within 3 min in the cases of Co(II), Ni (II), Sr (II), Zr (IV), Cs (I), and Nd(III). The results of the present study suggest that the radionuclides present in contaminated water can be extracted with high efficiency using CMPO–TBP–[C2mim][Tf2N]as the extractant.

LanguageEnglish
Pages161-167
Number of pages7
JournalTransactions of the Atomic Energy Society of Japan
Volume16
Issue number3
DOIs
StatePublished - 2017

Fingerprint

Debris
Radioisotopes
Water
Solvent extraction
Phosphates
Contamination
Oxides
Processing

Keywords

  • CMPO
  • Contaminated water
  • Fuel debris
  • Fukushima Daiichi Nuclear Power Plant
  • Ionic liquid
  • Solvent extraction
  • Synergistic effect
  • TBP

ASJC Scopus subject areas

  • Nuclear Energy and Engineering
  • Safety, Risk, Reliability and Quality

Cite this

@article{b80d598f124b4e1189213deae1624346,
title = "Synergistic extraction of radionuclides from fuel debris with a[C2mim][Tf2N]–based extractant",
abstract = "Water contamination with radionuclides has been found to occur during the processing of fuel debris by the submersion method. In this study, we have investigated the collective removal of radionuclides by the solvent extraction method with the ultimate goal of developing a process for treating such contaminated water. Co(II), Ni (II), Sr (II), Zr (IV), Mo(VI), Cs (I), and Nd(III), which are assumed to be present in the fuel debris, are chosen as the target species for the solvent extraction process. Octyl (phenyl)–N,N–diisobutylcarbamoylmethylphosphine oxide(CMPO)–tributyl phosphate (TBP)–[C2mim][Tf2N], which serves as the extractant, exhibits a strong ability to extract Co(II), Ni (II), Sr (II), and Nd(III)at a NaCl concentration of 2.0 mol/dm3, whereas it exhibits high extraction ability towards Co(II), Ni (II), Sr (II), Zr (IV), Cs (I), and Nd(III)at a H3BO4 concentration of 0.1 mol/dm3. This extractant also quickly extracts the radionuclides, allowing extraction equilibrium to be reached within 3 min in the cases of Co(II), Ni (II), Sr (II), Zr (IV), Cs (I), and Nd(III). The results of the present study suggest that the radionuclides present in contaminated water can be extracted with high efficiency using CMPO–TBP–[C2mim][Tf2N]as the extractant.",
keywords = "CMPO, Contaminated water, Fuel debris, Fukushima Daiichi Nuclear Power Plant, Ionic liquid, Solvent extraction, Synergistic effect, TBP",
author = "Yuji Yada and Tsuyoshi Arai",
year = "2017",
doi = "10.3327/taesj.J16.025",
volume = "16",
pages = "161--167",
journal = "Transactions of the Atomic Energy Society of Japan",
issn = "1347-2879",
publisher = "Atomic Energy Society of Japan",
number = "3",

}

TY - JOUR

T1 - Synergistic extraction of radionuclides from fuel debris with a[C2mim][Tf2N]–based extractant

AU - Yada,Yuji

AU - Arai,Tsuyoshi

PY - 2017

Y1 - 2017

N2 - Water contamination with radionuclides has been found to occur during the processing of fuel debris by the submersion method. In this study, we have investigated the collective removal of radionuclides by the solvent extraction method with the ultimate goal of developing a process for treating such contaminated water. Co(II), Ni (II), Sr (II), Zr (IV), Mo(VI), Cs (I), and Nd(III), which are assumed to be present in the fuel debris, are chosen as the target species for the solvent extraction process. Octyl (phenyl)–N,N–diisobutylcarbamoylmethylphosphine oxide(CMPO)–tributyl phosphate (TBP)–[C2mim][Tf2N], which serves as the extractant, exhibits a strong ability to extract Co(II), Ni (II), Sr (II), and Nd(III)at a NaCl concentration of 2.0 mol/dm3, whereas it exhibits high extraction ability towards Co(II), Ni (II), Sr (II), Zr (IV), Cs (I), and Nd(III)at a H3BO4 concentration of 0.1 mol/dm3. This extractant also quickly extracts the radionuclides, allowing extraction equilibrium to be reached within 3 min in the cases of Co(II), Ni (II), Sr (II), Zr (IV), Cs (I), and Nd(III). The results of the present study suggest that the radionuclides present in contaminated water can be extracted with high efficiency using CMPO–TBP–[C2mim][Tf2N]as the extractant.

AB - Water contamination with radionuclides has been found to occur during the processing of fuel debris by the submersion method. In this study, we have investigated the collective removal of radionuclides by the solvent extraction method with the ultimate goal of developing a process for treating such contaminated water. Co(II), Ni (II), Sr (II), Zr (IV), Mo(VI), Cs (I), and Nd(III), which are assumed to be present in the fuel debris, are chosen as the target species for the solvent extraction process. Octyl (phenyl)–N,N–diisobutylcarbamoylmethylphosphine oxide(CMPO)–tributyl phosphate (TBP)–[C2mim][Tf2N], which serves as the extractant, exhibits a strong ability to extract Co(II), Ni (II), Sr (II), and Nd(III)at a NaCl concentration of 2.0 mol/dm3, whereas it exhibits high extraction ability towards Co(II), Ni (II), Sr (II), Zr (IV), Cs (I), and Nd(III)at a H3BO4 concentration of 0.1 mol/dm3. This extractant also quickly extracts the radionuclides, allowing extraction equilibrium to be reached within 3 min in the cases of Co(II), Ni (II), Sr (II), Zr (IV), Cs (I), and Nd(III). The results of the present study suggest that the radionuclides present in contaminated water can be extracted with high efficiency using CMPO–TBP–[C2mim][Tf2N]as the extractant.

KW - CMPO

KW - Contaminated water

KW - Fuel debris

KW - Fukushima Daiichi Nuclear Power Plant

KW - Ionic liquid

KW - Solvent extraction

KW - Synergistic effect

KW - TBP

UR - http://www.scopus.com/inward/record.url?scp=85027524510&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85027524510&partnerID=8YFLogxK

U2 - 10.3327/taesj.J16.025

DO - 10.3327/taesj.J16.025

M3 - Article

VL - 16

SP - 161

EP - 167

JO - Transactions of the Atomic Energy Society of Japan

T2 - Transactions of the Atomic Energy Society of Japan

JF - Transactions of the Atomic Energy Society of Japan

SN - 1347-2879

IS - 3

ER -