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dc.contributor.authorSzlachta, Małgorzata
dc.contributor.authorGerda, Vasyl
dc.contributor.authorChubar, Natalia
dc.date.accessioned2016-02-25T12:40:25Z
dc.date.available2016-02-25T12:40:25Z
dc.date.issued2012-01
dc.identifier.citationSzlachta M, Gerda V, Chubar N (2012) Adsorption of arsenite and selenite using an inorganic ion exchanger based on Fe–Mn hydrous oxide. Journal of Colloid and Interface Science 365: 213–221. Available: http://dx.doi.org/10.1016/j.jcis.2011.09.023.
dc.identifier.issn0021-9797
dc.identifier.pmid21968401
dc.identifier.doi10.1016/j.jcis.2011.09.023
dc.identifier.urihttp://hdl.handle.net/10754/597473
dc.description.abstractThe 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 47.6mg/g) and Se(IV) (up to 29.0mg/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. Fourier transform infrared (FTIR) and X-ray photoelectron spectroscopy (XPS) studies showed that the ion exchange adsorption of both anions took place via OH - groups, mainly from Fe(III) but also Mn(III) hydrous oxides. MnCO 3 did not contribute directly to As(III) and Se(IV) removal. A higher adsorptive capacity of the developed material towards As(III) was partly due to partial As(III) oxidation during adsorption. © 2011 Elsevier Inc.
dc.description.sponsorshipThis work was funded by the Center-in-Development Award to Utrecht University (No. KUK-C1-017-12) by King Abdullah University of Science and Technology.Dr. Andrey Shchukarev (Umeä University, Sweden) is gratefully acknowledged for XPS analysis.
dc.publisherElsevier BV
dc.subjectAdsorption
dc.subjectArsenite
dc.subjectFe-Mn hydrous oxide
dc.subjectInorganic ion exchanger
dc.subjectSelenite
dc.titleAdsorption of arsenite and selenite using an inorganic ion exchanger based on Fe–Mn hydrous oxide
dc.typeArticle
dc.identifier.journalJournal of Colloid and Interface Science
dc.contributor.institutionUtrecht University, Utrecht, Netherlands
kaust.grant.numberKUK-C1-017-12


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