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Chemical Studies on Uranium Extraction from Concentrated Phosphoric Acid by Using PC88A and DBBP Mixture.
2011 (engelsk)Inngår i: Journal of Radioanalytical and Nuclear Chemistry, ISSN 0236-5731, E-ISSN 1588-2780, Vol. 290, s. 353-359Artikkel i tidsskrift (Fagfellevurdert) [Kunstnerisk arbeiden] Published
Abstract [en]

Liquid–liquid extraction of U (VI) from concentrated phosphoric acid by using (2-ethyl hexyl) phosphonic acid, mono (2-ethyl hexyl) ester (PC88A) and di-butyl butyl phosphonate (DBBP) has been investigated. The effect of different factors affecting the extraction process (PC88A concentration, DBBP concentration, shaking time, aqueous/organic phase ratio, phosphoric acid concentration and effect of diluents) have been investigated. The obtained data of temperature on the extraction showed that the enthalpy change is −17.15 kJ mol−1. Uranium was extracted from the strip liquor by using di (2-ethylhexyl) phosphoric acid and tri-octyl phosphine oxide mixture and finally converted to a high purity UO3 product using precipitation with hydrogen peroxide and heat treatment at 365 °C.

sted, utgiver, år, opplag, sider
Springer, 2011. Vol. 290, s. 353-359
Emneord [en]
UraniumExtractionPhosphoric acidKinetics
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Identifikatorer
URN: urn:nbn:se:kth:diva-200637DOI: 10.1007/s10967-011-1372-8ISI: 000295418600018Scopus ID: 2-s2.0-80054973473OAI: oai:DiVA.org:kth-200637DiVA, id: diva2:1069736
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QC 20170131

Tilgjengelig fra: 2017-01-30 Laget: 2017-01-30 Sist oppdatert: 2017-11-29bibliografisk kontrollert

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