Studies on processes for recovering uranium from sediment wastes

Ohashi, Yusuke ; Ikeda, Yasuhisa*

Sediment waste generated from the waste solution of uranium handling facilities contains uranium and iron. In this study, we examined methods to selectively separate uranium from the waste without using nitric acid. Uranium dissolved in 0.5 2.5M sulfuric acid, 1M hydrochloric acid, and 5M perchloric acid was selectively precipitated by adding oxalic acid. In addition, when oxalic acid and NCP are added together in 2.5M sulfuric acid, it seems that new insoluble uranium compounds are formed. Consequently, precipitation ratios of uranium was improved. Uranium was selectively precipitated from the sulfuric acid solution containing Fe and Al, and the precipitation ratio of uranium became 99%.

Language	:	English
Journal	:	Journal of Radioanalytical and Nuclear Chemistry
Volume	:	321
Number	:	2
Pages	:	p.683 - 691
Publication Year/Month	:	2019/08
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Paper URL	:	https://doi.org/10.1007/s10967-019-06614-6
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Registration No. : AA20190170
JAEA Abstracts No. : 47001408
Paper Submission No. : 22033

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