title: Solvent extraction of uranium from leach solutions obtained in processing of Polish low-grade ores.
abstract: Solvent extraction of uranium from acidic and alkaline post-leaching liquors that were obtained by leaching of Polish ores is reported in this paper. The stripping of uranium from organic to aqueous phase was also studied. The synergistic mixture of 2-diethylhexylphosphoric acid (D2EHPA) and tri-n-butylphosphate (0.2 M:0.2 M) was found as a good extracting agent for uranium. Recovery of uranium was reached even 98 %. The effect of such parameters like uranium concentration and concentration of reagents used in the experiments was evaluated in advance by using a model uranium solutions.
authors.affiliation: Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland.
authors.forename: Katarzyna
authors.initials: K
authors.lastname: Kiegiel
authors.affiliation: Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland.
authors.forename: Anna
authors.initials: A
authors.lastname: Abramowska
authors.affiliation: Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland.
authors.forename: Paweł
authors.initials: P
authors.lastname: Biełuszka
authors.affiliation: Institute of Nuclear Chemistry and Technology, Dorodna 16, 03-195 Warsaw, Poland.
authors.forename: Grażyna
authors.initials: G
authors.lastname: Zakrzewska-Kołtuniewicz
authors.affiliation: Polish Geological Institute National Research Institute, Rakowiecka 4, 00-975 Warsaw, Poland.
authors.forename: Stanisław
authors.initials: S
authors.lastname: Wołkowicz
keywords: Geochemical analysis; Sandstones; Solvent extraction; Uranium