The extraction of uranium from nitrate solutions using a resin containing tributyl phosphate

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dc.contributor.authorBritz A.J.
dc.contributor.authorCloete F.L.D.
dc.date.accessioned2011-05-15T16:01:42Z
dc.date.available2011-05-15T16:01:42Z
dc.date.issued1990
dc.description.abstractTributyl phosphate adsorbed on to the macroporous polystyrene divinyl benzene resin, Levextrel OC 1023, was used for the extraction of uranium from solutions of nitric acid and aluminium nitrate with a total nitrate concentration of 5.5 M. Uranium is strongly adsorbed from these solutions; the distribution coefficient increases with the concentration of aluminium nitrate. The equilibrium distribution is described by the Langmuir equation. The rate of adsorption of uranium was correlated by the conventional equation for mass transfer through the liquid film below 0.1 g U/L in solution. However, at higher values this was no longer valid and a modified version of this equation is proposed here which correlated all adsorption runs up to 1 g U/L. Uranium is readily stripped from Levextrel resin with water. The kinetics of this process are controlled by particle diffusion and can be described by the simplified equation proposed by Vermeulen. Values of diffusivity of uranium in Levextrel resin were lower than in water but very significantly higher than in conventional ion exchange resins. © 1990.
dc.description.versionArticle
dc.identifier.citationHydrometallurgy
dc.identifier.citation25
dc.identifier.citation2
dc.identifier.issn0304386X
dc.identifier.urihttp://hdl.handle.net/10019.1/12108
dc.subjectAdsorption--Mathematical Models
dc.subjectHydrometallurgy
dc.subjectIon Exchange Resins--Applications
dc.subjectLangmuir Equation
dc.subjectLevextrel Resin
dc.subjectPolystyrene Divinyl Benzene Resin
dc.subjectPurex Process
dc.subjectTributyl Phosphate
dc.subjectUranium Ore Treatment
dc.titleThe extraction of uranium from nitrate solutions using a resin containing tributyl phosphate
dc.typeArticle
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