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Studies on processes for recovering uranium from sediment wastes

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Abstract

Sediment wastes generated from nuclear facilities often contain uranium and iron. From the viewpoint of reduction of environmental impact, separation of uranium from sediment wastes has been required. Wet processes based on precipitation of uranyl oxalate in inorganic acids have been investigated as methods for recovering uranium from sediment wastes containing iron and aluminum. It was found that 98.6% of uranium in H2SO4 dissolving such wastes can be selectively recovered by using oxalic acid with N-cyclohexyl-2-pyrrolidone (NCP).

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Acknowledgements

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

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Authors and Affiliations

  1. Ningyo-toge Environmental Engineering Center, Sector of Nuclear Fuel, Decommissioning and Waste Management Technology Development, Japan Atomic Energy Agency, 1550 Kamisaibara Kagamino-cho, Tomata-gun, Okayama, 708-0698, Japan

    Yusuke Ohashi

  2. Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8550, Japan

    Yasuhisa Ikeda

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  1. Yusuke Ohashi
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  2. Yasuhisa Ikeda
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Correspondence to Yusuke Ohashi.

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Ohashi, Y., Ikeda, Y. Studies on processes for recovering uranium from sediment wastes. J Radioanal Nucl Chem 321, 683–691 (2019). https://doi.org/10.1007/s10967-019-06614-6

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  • DOI: https://doi.org/10.1007/s10967-019-06614-6

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