Adsorption of arsenite and selenite using an inorganic ion exchanger based on Fe–Mn hydrous oxide

Malgorzata Szlachta, Vasyl Gerda, Natalia Chubar

    Research output: Contribution to journalArticle

    Abstract

    The adsorption behaviour and mechanism of As(III) and Se(IV) oxyanion uptake using a mixed inorganic adsorbent were studied. The novel adsorbent, based on Fe(III)–Mn(III) hydrous oxides and manganese(II) carbonate, was synthesised using a hydrothermal precipitation approach in the presence of urea. The
    inorganic ion exchanger exhibited a high selectivity and adsorptive capacity towards As(III) (up to 47.6 mg/g) and Se(IV) (up to 29.0 mg/g), even at low equilibrium concentration. Although pH effects were typical for anionic species (i.e., the adsorption decreased upon pH increase), Se(IV) was more sensitive to
    pH changes than As(III). The rates of adsorption of both oxyanions were high.
    Original languageEnglish
    Pages (from-to)213-221
    Number of pages9
    JournalJournal of Colloid and Interface Science
    Volume365
    Issue number1
    DOIs
    Publication statusPublished - Jan 2012

    Keywords

    • chemical engineering
    • adsorption science and technology
    • toxic anions
    • inorganic ion exchanger
    • Selenite
    • Arsenite

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