0424183 - ÚGN 2014 CZ eng A - Abstract
Thanh, D. N. - Kubička, D. - Herzogová, L. - Vu, H.N. - Novák, P. - Vaculíková, Lenka
Removal of arsenate and selenite from aqueous solution using nano-amorphous iron-titanium hydrous oxide.
45. Symposium on Catalysis - Book of Abstracts. Praha: Ústav fyzikální chemie J. Heyrovského AV ČR, 2013 - (Horáček, M.; Kurfiřtová, L.; Žilková, N.). Po-30-Po-30. ISBN 978-80-87351-27-7.
[Symposium on Catalysis /45./. 04.11.2013-06.11.2013, Praha]
Institutional support: RVO:68145535
Keywords : metaloids * selenium * arsenic
Subject RIV: CB - Analytical Chemistry, Separation

Metaloids such as selenium (Se) and arsenic (As) are among the most important environmental contaminants affecting environment and human health. The Fe-Ti hydrous oxide was synthesized and used as an adsorbent for removal of arsenate (As(V)) and selenite (Se(IV)) from aqueous solution. The new synthesized adsorbent was investigated using Transmission Electron Microscopy (TEM), X-Ray powder diffraction (XRD), the Brunauer-Elmet-Teller nitrogen adsorption technique (BET-N2 adsorption), Fourier transform spectroscopy (FTIR), thermogravimetric analysis (TGA) and batch experiments were carried out to determine its adsorption properties. It is shown that the adsorbent was nano-amorphous hydrous oxide with high specific surface area of 230 m2/g. The maximum adsorption capacity for As(V) and Se(IV) at pH 7 was 67.56 mg g-1 and 84.03 mg g-1, respectively. The ligand exchange of both As(V) and Se(IV) species, taking place via OH- groups on the adsorbent surface was the main adsorption mechanism. The high uptake capability of nano-amorphous Fe-Ti hydrous oxide make it a new potentially attractive adsorbent for the removal of both arsenic and selenium from water.
Permanent Link: http://hdl.handle.net/11104/0230312