Abstract
The extraction of nitric acid with tridodecylamine (TDA) was studied as a function of methanol, ethanol, isopropanol, and acetone concentration in the aqueous phase. Extraction increases in the order: methanol <ethanol <isoproppanol <acetone. The extraction of nitric acid by TDA is affected by these additives more than the extraction of hydrochloric acid. Neptunium extraction by TDA and TBP was studied, also as a function of the concentration of the above additives from nitric as well as from hydrochloric ▪ acid media. Extraction of neptunium from nitric acid solutions is slightly influenced by additives, while the effect is considerable in case of extraction from hydrochloric acid solutions.
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