Matches in SemOpenAlex for { <https://semopenalex.org/work/W4205652539> ?p ?o ?g. }
Showing items 1 to 62 of
62
with 100 items per page.
- W4205652539 endingPage "18" @default.
- W4205652539 startingPage "18" @default.
- W4205652539 abstract "This paper addresses the development of a process to recovery uranium, thorium and rare earth elements from an industrial residue, with a subsequent removal of U and Th from the liquor generated. Sulfuric acid digestion followed by water leaching was found to be the best method to solubilise the metals. The acid digestion was carried out with an acid sample ratio of 700 kg t−1 and a reaction time of 2 h, without temperature control. The water leaching step was performed at room temperature (25 ± 2 °C), with 1 h of mechanical stirring and 20% of solids. Under these conditions, a metal dissolution of 94%, 81% and 97% was reached for the REE, Th and U, respectively. After the metal solubilisation, a sulfuric liquor containing 0.08 g L−1 Th, 0.35 g L−1 U, 9.1 g L−1 REE, 16 g L−1 Al, 7.8 g L−1 Fe, 0.47 g L−1 Ca, 0.75 g L−1 Zn and 0.1 g L−1 Si was formed. This liquor was used in the solvent extraction stage in order to separate Th and U from the REE, as well as from other metals. The effect of the type and extractant concentration, acidity of the liquor and type and concentration of the stripping solution were investigated. The results showed that 97% of the uranium and 94% of the thorium were extracted by a mixture of 0.05 mol L−1 of Primene JM-T and 0.1 mol L−1 of Alamine 336, in a single stage. The stripping from the loaded organic phase for the simultaneous removal of U and Th can be effectively done by using 1.7 mol L−1 NaCl solution at pH 1.2." @default.
- W4205652539 created "2022-01-25" @default.
- W4205652539 date "1903-07-01" @default.
- W4205652539 modified "2023-10-01" @default.
- W4205652539 title "Curie experiments with radium" @default.
- W4205652539 doi "https://doi.org/10.1016/s0016-0032(03)90002-0" @default.
- W4205652539 hasPublicationYear "1903" @default.
- W4205652539 type Work @default.
- W4205652539 citedByCount "0" @default.
- W4205652539 crossrefType "journal-article" @default.
- W4205652539 hasConcept C127313418 @default.
- W4205652539 hasConcept C13965031 @default.
- W4205652539 hasConcept C147789679 @default.
- W4205652539 hasConcept C159390177 @default.
- W4205652539 hasConcept C159750122 @default.
- W4205652539 hasConcept C178790620 @default.
- W4205652539 hasConcept C179104552 @default.
- W4205652539 hasConcept C185592680 @default.
- W4205652539 hasConcept C191897082 @default.
- W4205652539 hasConcept C192562407 @default.
- W4205652539 hasConcept C2778199549 @default.
- W4205652539 hasConcept C527038400 @default.
- W4205652539 hasConcept C544153396 @default.
- W4205652539 hasConcept C555451288 @default.
- W4205652539 hasConcept C88380143 @default.
- W4205652539 hasConcept C90982505 @default.
- W4205652539 hasConceptScore W4205652539C127313418 @default.
- W4205652539 hasConceptScore W4205652539C13965031 @default.
- W4205652539 hasConceptScore W4205652539C147789679 @default.
- W4205652539 hasConceptScore W4205652539C159390177 @default.
- W4205652539 hasConceptScore W4205652539C159750122 @default.
- W4205652539 hasConceptScore W4205652539C178790620 @default.
- W4205652539 hasConceptScore W4205652539C179104552 @default.
- W4205652539 hasConceptScore W4205652539C185592680 @default.
- W4205652539 hasConceptScore W4205652539C191897082 @default.
- W4205652539 hasConceptScore W4205652539C192562407 @default.
- W4205652539 hasConceptScore W4205652539C2778199549 @default.
- W4205652539 hasConceptScore W4205652539C527038400 @default.
- W4205652539 hasConceptScore W4205652539C544153396 @default.
- W4205652539 hasConceptScore W4205652539C555451288 @default.
- W4205652539 hasConceptScore W4205652539C88380143 @default.
- W4205652539 hasConceptScore W4205652539C90982505 @default.
- W4205652539 hasIssue "1" @default.
- W4205652539 hasLocation W42056525391 @default.
- W4205652539 hasOpenAccess W4205652539 @default.
- W4205652539 hasPrimaryLocation W42056525391 @default.
- W4205652539 hasRelatedWork W1502258776 @default.
- W4205652539 hasRelatedWork W1966890592 @default.
- W4205652539 hasRelatedWork W2029765539 @default.
- W4205652539 hasRelatedWork W2047614552 @default.
- W4205652539 hasRelatedWork W2188422516 @default.
- W4205652539 hasRelatedWork W2359380691 @default.
- W4205652539 hasRelatedWork W2496379841 @default.
- W4205652539 hasRelatedWork W2966163291 @default.
- W4205652539 hasRelatedWork W3120238767 @default.
- W4205652539 hasRelatedWork W4239745638 @default.
- W4205652539 hasVolume "156" @default.
- W4205652539 isParatext "false" @default.
- W4205652539 isRetracted "false" @default.
- W4205652539 workType "article" @default.