BRYNYCH Vojtěch UJV REZ, a.s.

Sorption of Cs(I), Sr(II) and Eu(III) on Modified Nickel Oxide

Co-authors ČUBA Václav, PROCHÁZKOVÁ Lenka, POSPĚCHOVÁ Jana, SZATMÁRY Lórant

90Sr and 137Cs are one of the main fission products existing in the radioactive wastes produced in nuclear power plant. Europium is a typical member of the lanthanide series and can be utilized as a homologue for the prediction of other lanthanides behavior. In this paper, a novel composite sorbent based on nickel oxide and titanium dioxide was synthesized, characterized and applied for removal of 90Sr, 137Cs and 152-154Eu from aqueous solution. The prepared nanomaterials were characterized by methods of X-ray diffraction (XRD), scanning electron microscopy (SEM) and specific surface area measurements. The main method used for evaluation of nanomaterials retention properties was batch sorption experiment, based on contact of solid material with tracer solution under defined boundary conditions (solid/solution ratio, time, solution composition as pH and ionic strength). The nanomaterials were tested as prospective adsorbents for efficient removal of cesium, strontium or europium from aqueous solution. ACKNOWLEDGEMENTS: We thank for the support from Ministry of the Interior of the Czech Republic (Project No. VG20132015132). ACKNOWLEDGEMENTS: We thank for the support from Ministry of the Interior of the Czech Republic (Project No. VG20132015132).

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