Record details

Title
    Removal of arsenate and selenite from aqueous solution using nano-amorphous iron-titanium hydrous oxide
Author
    Herzogová, L.
    Kubička, D.
    Novák, P.
    Thanh, D. N.
    Vaculíková, Lenka
    Vu, H.N.
Conference
    Symposium on Catalysis (45. : 04.11.2013-06.11.2013 : Praha, Česká republika)
Language
    anglicky
Publication type
    abstrakt
Source title - monograph
    45. Symposium on Catalysis - Book of Abstracts
Pages
    Po-30-Po-30
Notes
    Autoři celkem: 6
    Rozsah: 1 s.
Subject category
    arsenic
    metaloids
    selenium
Keyword
    Aqueous
    Arsenate
    Hydrous
    Iron-titanium
    Nano-amorphous
    Oxide
    Removal
    Selenite
    Solution
    Using
Abstract (in english)
   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.
Contributor
    AV ČR Brno, Ústav geoniky
Contributor code
    AV ČR, ÚG
Source format
    U
Import date
    24. 10. 2014