Abstract
The extraction behavior and separation performance of Re(VII) and U(VI) from the nitric acid medium were studied respectively, in which an asymmetrical diglycolamides, N,N′-dimethyl-N,N′-dioctyldiglycolamide (DMDODGA) was used as the extractant, and 40/60(v/v)% n-octanol/kerosene was used as the diluent. The effects of the concentration of the aqueous HNO3, the initial metal ion and the extractant on the distribution ratios (DRe and DU) and the separation factor (βU/Re) were discussed. Formation of the 1:1 and 1:2 Re/DODMDGA and 1:1 U/DMDODGA complexes were also analyzed using the slope analysis method. Besides, βU/Re increases as the aqueous HNO3 concentration increases.
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The work was supported by the Special Fund of Central University Basic Scientific Research Fee under Grant (GK2150260176).
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Wei, Z., Lu, C., Zhou, Y. et al. Extraction and separation performance of rhenium(VII) and uranium(VI) from nitric acid medium using N,N′-dimethyl-N,N′-dioctyldiglycolamide. J Radioanal Nucl Chem 323, 875–884 (2020). https://doi.org/10.1007/s10967-019-06976-x
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DOI: https://doi.org/10.1007/s10967-019-06976-x