Nuclear Engineering and Technology

  • 제53권4호
  • /
  • Pages.1218-1223
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  • 2021
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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Extraction behaviors of platinum group metals in simulated high-level liquid waste by a hydrophobic ionic liquid bearing an amino moiety

  • Wu, Hao (Department of Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University) ;
  • Kim, Seong-Yun (Department of Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University) ;
  • Takahashi, Tadayuki (Department of Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University) ;
  • Oosugi, Haruka (Department of Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University) ;
  • Ito, Tatsuya (Department of Quantum Science and Energy Engineering, Graduate School of Engineering, Tohoku University) ;
  • Kanie, Kiyoshi (Institute of Multidisciplinary Research for Advanced Materials, Tohoku University)
  • 투고 : 2020.07.13
  • 심사 : 2020.09.28
  • 발행 : 2021.04.25
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초록

A hydrophobic ionic liquid including an amino moiety ([DiOcAPmim][NTf2]) was synthesized. Its extraction behaviors towards Pd(II), Ru(III), Rh(III) were investigated in nitric acid aqueous solution as a function of contact time, effect of concentration of nitric acid, effect of temperature, and effect of co-existing metal ions. The extraction kinetics of Pd(II) was fairly fast and extraction equilibrium can be attained within only 5 min under the [HNO3] = 2.05 M. When [HNO3]< 1 M, the extraction percentage of Pd(II), Ru(III), Rh(III) were all above 80%. When [HNO3] reached 2 M, all of the extraction percentage decreased and in an order of Pd(II)>Ru(III)>Rh(III). When [HNO3]> 2 M, the extraction performance gradually recovered. The effect of temperature can slightly affect the extraction performance of Pd(II). Furthermore, in simulated high-level liquid waste, [DiOcAPmim][NTf2] showed a better preference towards Pd(II) under the interference of various other co-existing metal ions.

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피인용 문헌

  1. Complexation-Distribution Separated Solvent Extraction Process Designed for Rapid and Efficient Recovery of Inert Platinum Group Metals vol.6, pp.33, 2021, https://doi.org/10.1021/acsomega.1c03565
  2. High acidity- and radiation-resistant triazine-based POPs for recovery of Pd(II) from nuclear fission products vol.430, pp.p1, 2021, https://doi.org/10.1016/j.cej.2021.132618