Evaluation of Co and Zn competitive sorption by zeolitic material synthesized from fly ash using 60Co and 65Zn as radioindicators

  • Martin PipíškaEmail author
  • Eva Florková
  • Peter Nemeček
  • Lucia Remenárová
  • Miroslav Horník


Zeolitic material prepared by hydrothermal treatment of brown coal fly ash was used for sorption separation of Co2+ and Zn2+ ions from single and binary solutions. Adsorption in single systems was rapid, pH dependent and follow the Langmuir isotherm. 3D sorption surfaces revealed competitive effects and mutual interactions between Co2+ and Zn2+ and significant preference for Zn2+ in binary system was confirmed. Surface retention and ion-exchange were most probably the principal mechanisms of Co2+ and Zn2+ removal. Zeolitic material with markedly high sorption capacity for Co2+ and Zn2+ can be a promising sorbent for removal of toxic metals and radionuclides.


Fly ash conversion Zeolitic material 60Co 65Zn Competitive adsorption 



This work was supported by the Slovak Research and Development Agency under the Contract No. APVV-15-0098.

Compliance with ethical standards

Conflict of interest

The authors declare that there are no conflicts of interest.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2019

Authors and Affiliations

  • Martin Pipíška
    • 1
    • 2
    Email author
  • Eva Florková
    • 2
  • Peter Nemeček
    • 3
  • Lucia Remenárová
    • 2
  • Miroslav Horník
    • 2
  1. 1.Department of ChemistryTrnava University in TrnavaTrnavaSlovakia
  2. 2.Department of Ecochemistry and RadioecologyUniversity of SS. Cyril and MethodiusTrnavaSlovakia
  3. 3.Department of ChemistryUniversity of SS. Cyril and MethodiusTrnavaSlovakia

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