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Studies on electrochemical behavior of uranium species in choline chloride-urea eutectic for developing electrolytically treating method of uranium-bearing wastes

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Abstract

As one of methods for recovering uranium from the uranium-bearing wastes, we have proposed the electrolytic deposition method using choline chloride-urea (CCU) eutectic as media. Bulk electrolysis of the CCU solutions dissolving uranium-bearing wastes were carried out at −1.5 V at 80 °C. The deposits were formed on a carbon electrode as cathode and mainly consist of the U(VI) and U(IV) mixed oxide compounds containing F, O, and N. Consequently, it was confirmed that the CCU eutectic is effective media for recovering uranium selectively from uranium-bearing waste.

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Acknowledgments

The authors are grateful to members of the Waste Management Engineering Section, Environmental Research and Development Department, Ningyo-toge Environmental Engineering Center, Sector of Decommissioning and Radioactive Waste Management, Japan Atomic Energy Agency.

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Authors and Affiliations

  1. Ningyo-toge Environmental Engineering Center, Japan Atomic Energy Agency, 1550 Kamisaibara Kagamino-cho, Tomata-gun, Okayama, 708-0698, Japan

    Yusuke Ohashi & Yoshio Tanaka

  2. Department of Nuclear Engineering, School of Engineering, Tokai University, 4-1-1 Kitakaname, Hiratsuka-shi, Kanagawa, 259-1292, Japan

    Noriko Asanuma

  3. Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, 2-12-1-N1-34 Ookayama, Meguro-ku, Tokyo, 152-8550, Japan

    Masayuki Harada & Yasuhisa Ikeda

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  1. Yusuke Ohashi
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  2. Noriko Asanuma
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  3. Masayuki Harada
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  4. Yoshio Tanaka
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  5. Yasuhisa Ikeda
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Correspondence to Yusuke Ohashi.

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Ohashi, Y., Asanuma, N., Harada, M. et al. Studies on electrochemical behavior of uranium species in choline chloride-urea eutectic for developing electrolytically treating method of uranium-bearing wastes. J Radioanal Nucl Chem 309, 627–636 (2016). https://doi.org/10.1007/s10967-015-4625-0

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  • DOI: https://doi.org/10.1007/s10967-015-4625-0

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