The purpose of this study is to improve the concentration of U(VI) in carbonate solution reasonably, which to improve the application potential of the alkaline reprocessing processes. The dissolution behavior of U<sub>3</sub>O<sub>8&...
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https://www.riss.kr/link?id=A109088286
Chenxi Hou ; Mingjian He ; Meng Zhang ; Haofan Fang ; Hui He ; Caishan Jiao
2024
English
SCIE,SCOPUS,KCI등재
학술저널
419-425(7쪽)
0
상세조회0
다운로드다국어 초록 (Multilingual Abstract)
The purpose of this study is to improve the concentration of U(VI) in carbonate solution reasonably, which to improve the application potential of the alkaline reprocessing processes. The dissolution behavior of U<sub>3</sub>O<sub>8&...
The purpose of this study is to improve the concentration of U(VI) in carbonate solution reasonably, which to improve the application potential of the alkaline reprocessing processes. The dissolution behavior of U<sub>3</sub>O<sub>8</sub> in carbonate peroxide solutions was investigated under different conditions, including pH, carbonate concentration, and solid-liquid ratio. The results showed that the dissolution rate of U<sub>3</sub>O<sub>8</sub> increased with the increase of pH from 8 to 11 in the mixed carbonate solution containing 0.5 mol/L H<sub>2</sub>O<sub>2</sub>. The role of carbonate ions in the dissolution of U<sub>3</sub>O<sub>8</sub> was further elucidated by observing the dissolution of UO<sub>4</sub>⋅4H<sub>2</sub>O in carbonate solutions. Furthermore, the concentration of U(VI) in 3 mol/L Na<sub>2</sub>CO<sub>3</sub> solution was successfully increased to 350 g/L under ultrasonic-assisted conditions at 60 ℃ and a solid-liquid ratio at 1/2 g/mL. Meanwhile, it is suggested that increasing the concentration of carbonate ions can improve the stability of the dissolved solution containing uranyl peroxycarbonate complex.
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