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Citation: Yu Shaoning, Zhou Zuming, Gong Jian, Bian Maiying. KINETIC STUDIES ON THE SOLVENT EXTRACTION OF URANIUM (Ⅵ) FROM NITRIC ACID SOLUTION WITH TRIBUTYL PHOSPHATE[J]. Chinese Journal of Applied Chemistry, ;1992, 9(1): 61-64. shu

KINETIC STUDIES ON THE SOLVENT EXTRACTION OF URANIUM (Ⅵ) FROM NITRIC ACID SOLUTION WITH TRIBUTYL PHOSPHATE

1.
Department of Physics Ⅱ, Fudan University, Shanghai 200433

Corresponding author: Zhou Zuming,
Received Date: 6 February 1991
Available Online: 31 May 1991

The kinetics of extraction of uranium (Ⅵ) from nitric acid solution by tributyl phophate (TBP) in cyclohexane was investigated using single drop and Lewis cell technique.The extraction rate were found to be pseudo-first order with respect to the concentration of uranium (Ⅵ). It was increased with increasing concentration of TBP between 0~0.5 mol/L TBP and had a max/mum at about 4 mol/L nitric acid or nitrate in aqueous solution. The rate was almost independent of the extraction temperature. It is suggested that the extraction rate of uranium(Ⅵ) is controlled by the diffusion of complex UO₂(NO₂)₃·2TBP from interface into organic phase.
- uranium,
- nitric acid,
- extraction,
- kinetics
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