Lead ions sorption using magnetically modified sorbent based on titanium dioxide powder

0495096 - BC 2019 RIV NL eng J - Článek v odborném periodiku
Seidlerová, J. - Motyka, O. - Drobíková, K. - Šafařík, Ivo
Lead ions sorption using magnetically modified sorbent based on titanium dioxide powder.
Materials Today: Proceedings. Roč. 5, Suppl. 1 (2018), S61-S70. E-ISSN 2214-7853
Institucionální podpora: RVO:60077344
Klíčová slova: TiO2 * sorption * lead ion * magnetic modification
Obor OECD: Environmental sciences (social aspects to be 5.7)

Non-magnetic TiO2 powder and magnetically modified TiO2 powder were employed for sorption experiments, the magnetically modified TiO2 particles allow magnetic separation of the sorbents with already adsorbed ions of pollutants. FeSO4.7H2O was used for synthesis of magnetically responsive TiO2. A detailed study of the adsorption/desorption process was performed using batch adsorption experiments carried out with various concentrations of lead ions and contact time. Presence of magnetic iron oxides particles on the surface of sorbents increased the adsorption rate, and increased the maximum amount of adsorbed Pb2+ ions per mass. Calculated isotherm parameters and desorption experiments showed that the content of magnetic particles influenced the adsorption binding of Pb2+ ions on the magnetic TiO2 surface positively.
Trvalý link: http://hdl.handle.net/11104/0292591