Purification of rare earth chloride liquor associated with high-grade monazite exploitation

  • A. M. Shahr El-Din
  • E. M. El AfifiEmail author
  • E. H. Borai


Removal of the non-desired impurities (radionuclides, Th(IV) and Fe(III)) with Ln(III) in high-grade monazite was developed. The chromate solution and pH are the factors controlling removal of the non-desired impurities. At pH 3, removal of radionuclides and Fe(III) was 30 and 60%, respectively, whereas Th(IV) interfered with Ln(III) liquor. When liquor was treated by 0.23 M chromate solution at pH 3, ~ 98% of Th(IV) and Fe(III) was removed and ~ 70% of radionuclides was removed from Ln(III) liquor with loss ≤ 20% is low compared with a previous study. Thus, exploitation of valuable Ln(III) can be done safely using the optimized chromate solution.


Minerals Lanthanides TENORM Remediation Radiation protection 



Authors are thankful to the Department of Analytical Chemistry and Control (HLWMC, Egyptian Atomic Energy Authority) for kind cooperation and help in providing necessary laboratory facilities to carry out this work.

Compliance with ethical standards

Conflict of interest

The authors of the manuscript declare that there is no conflict of interest.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2018

Authors and Affiliations

  • A. M. Shahr El-Din
    • 1
  • E. M. El Afifi
    • 1
    Email author
  • E. H. Borai
    • 1
    • 2
  1. 1.Department of Analytical Chemistry and ControlHot Laboratories and Waste Management Center (HLWMC), Egyptian Atomic Energy Authority (EAEA)CairoEgypt
  2. 2.Arab Atomic Energy AgencyTunisTunisia

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