Application of bentonite-manganese oxide composites in removal of heavy metals

0507864 - ÚGN 2020 CZ eng A - Abstract
Dolinská, S. - Znamenáčková, I. - Tomčová, J. - Valovičová, Věra - Vaculíková, Lenka - Plevová, Eva
Application of bentonite-manganese oxide composites in removal of heavy metals.
Book of Abstracts, NanoOstrava2019. Ostrava: VŠB-Technická univerzita Ostrava, 2019. s. 100-100. ISBN 978-80-248-4290-5.
[NanoOstrava 2019 - Nanomaterials and Nanotechnology Meeting /6./. 13.05.2019-16.05.2019, VŠB - Technická univerzita Ostrava]
R&D Projects: GA MŠMT(CZ) LO1406
Institutional support: RVO:68145535
Keywords : bentonite * composites * adsorption
OECD category: Analytical chemistry

The paper is aimed on the using of non-homogeneous bentonites coated by manganese oxides for the removal of heavy metal cations from the water solutions. In the first stage Slovak natural bentonite was converted to sodium form using by Na2CO3 as the activating agent. After that the manganese oxides were precipitated on the surface of natural and sodium activated bentonite, respectively. The structural changes before and after the modifications of bentonites were characterized by X-ray diffraction analyses and X-ray photoelectron spectroscopy. To compare the sorption properties of the natural bentonite and modified bentonites, sorption experiments of Cd2+ from aqueous solutions were done.
Permanent Link: http://hdl.handle.net/11104/0298827