Synergistic extraction of uranium from Korean black shale ore leach liquors using amine with phosphorous based extractant systems

• Published in: Journal of radioanalytical and nuclear chemistry Vol. 307; no. 2; pp. 843 - 854
• Main Authors: Kim, Joon Soo, Han, Kyu Sung, Kim, Su Jin, Kim, Sung-Don, Lee, Jin-Young, Han, Choon, Rajesh Kumar, Jyothi
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer Netherlands 01-02-2016; Springer
• Subjects: Amines; Chemistry; Chemistry and Materials Science; Comparative analysis; Diagnostic Radiology; Hadrons; Heavy Ions; Inorganic Chemistry; Nuclear Chemistry; Nuclear Physics; Physical Chemistry; Precipitation (Meteorology); Shale; Uranium; D2EHPA; Uranium; Amine; Synergistic extraction
• ISSN: 0236-5731; 1588-2780
• DOI: 10.1007/s10967-015-4327-7

Synergistic extraction of uranium using amine combined with phosphorous based extractant systems was described. The present study focused on the continuous extraction processing of uranium to form precipitation under higher pH conditions and higher aqueous phase ratios. To address this, synergistic extraction studies were carried out with P-based extractants as synergists and investigations were done with better pairs with an amine-based extractant system. Finally, all of the developed synergistic extraction methodologies were compared with each other. This showed that Alamine 336 and D2EHPA was the best pair for uranium extraction, offering as much separation as possible from other associated metals.