Ядерна фізика та енергетика Nuclear Physics and Atomic Energy   ISSN: 1818-331X (Print), 2074-0565 (Online)   Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine   Languages: Ukrainian, English, Russian   Periodicity: 4 times per year   Open access peer reviewed journal

Full text (ru)

Yu. V. Bondar^*, S. V. Kuzenko

State Institution "Institute of Environmental Geochemistry of the National Academy of Sciences of Ukraine", Kyiv, Ukraine

^*Corresponding author. E-mail address: juliavad@yahoo.com

Abstract: Manganese oxide is perspective material for selective removal of strontium ions from multicomponent solutions. Birnessite-type manganese oxide with the hexagonal disordered structure has been synthesized in the form of round microparticles. The synthesized samples have been tested for the removal of strontium ions from mono- and multicomponent solutions. It was found that birnessite can effectively remove strontium ions from monocomponent solutions. The presence of alkaline metal ions (up to ~ 0.3 M) in the multicomponent solutions has no significant effect on adsorption; however, calcium ions (Ca/Sr ~ 30/1) lead to the considerable decrease in adsorption. The rather high adsorption parameters received in the experimental work allow to consider the synthesized birnessite as a sorbent with high selectivity towards strontium ions.

Keywords: manganese dioxide, birnessite, adsorption, selectivity, ⁹⁰Sr.

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