4.4 Article

Sorption properties of hybrid organic-silica material towards 137Cs, 90Sr and 90Y radionuclides

Journal

ADSORPTION SCIENCE & TECHNOLOGY
Volume 36, Issue 3-4, Pages 851-856

Publisher

SAGE PUBLICATIONS INC
DOI: 10.1177/0263617417747469

Keywords

Hybrid organic-silica material; radionuclides Sr-90, Cs-137 and Y-90; sol-gel method; amino containing xerogel; water purification

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Hybrid organic-silica material modified by amino groups has been investigated as adsorbent of radionuclides Sr-90, Y-90 and Cs-137 from aqueous solutions. The sorption ability of the organic-silica material in the pH range of 2-9 with thermostating is studied by static sorption method. Analysis of sorption kinetic curves of radionuclides for aminoxerogel has shown that sorption equilibrium is established in 3-3.5 h. It is shown that the mechanisms of radionuclides sorption on the organic-silica material are combined by the complex formation and ion-exchange mechanism. The amino containing organic-silica material can be recommended for the cleaning of surfaces and purification of water solutions contaminated with Sr-90 and Y-90.

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