Chemical studies on uranium extraction from concentrated phosphoric acid by using PC88A and DBBP mixture

  • Ahmed A. Abdel-Khalek
  • M. M. Ali
  • Radwa M. AshourEmail author
  • A. F. Abdel-Magied


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.


Uranium Extraction Phosphoric acid Kinetics 



The authors wish to thank Dr. H. S. Gado Head of phosphoric acid pilot plant for his valuable help in carrying out the test work.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2011

Authors and Affiliations

  • Ahmed A. Abdel-Khalek
    • 1
  • M. M. Ali
    • 2
  • Radwa M. Ashour
    • 3
    Email author
  • A. F. Abdel-Magied
    • 2
  1. 1.Chemistry Department, Faculty of ScienceBeni-Suef UniversityBeni-SuefEgypt
  2. 2.Nuclear Materials AuthorityCairoEgypt
  3. 3.Chemistry Department, Faculty of ScienceEl-Fayoum UniversityEl-FayoumEgypt

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