Podrobnosti záznamu

Název
    Removal of arsenate and selenite from aqueous solution using nano-amorphous iron-titanium hydrous oxide
Autor
    Herzogová, L.
    Kubička, D.
    Novák, P.
    Thanh, D. N.
    Vaculíková, Lenka
    Vu, H.N.
Konference
    Symposium on Catalysis (45. : 04.11.2013-06.11.2013 : Praha, Česká republika)
Jazyk
    anglicky
Typ dokumentu
    abstrakt
Zdrojový dokument - monografie
    45. Symposium on Catalysis - Book of Abstracts
Strany
    Po-30-Po-30
Poznámky
    Autoři celkem: 6
    Rozsah: 1 s.
Předmětová kategorie
    arsenic
    metaloids
    selenium
Klíčové slovo
    Aqueous
    Arsenate
    Hydrous
    Iron-titanium
    Nano-amorphous
    Oxide
    Removal
    Selenite
    Solution
    Using
Abstrakt (anglicky)
   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.
Přispěvatel
    AV ČR Brno, Ústav geoniky
Kód přispěvatele
    AV ČR, ÚG
Zdrojový formát
    U
Datum importu
    24. 10. 2014