The application of Fe–Mn hydrous oxides based adsorbent for removing selenium species from water

Handle URI:
http://hdl.handle.net/10754/599878
Title:
The application of Fe–Mn hydrous oxides based adsorbent for removing selenium species from water
Authors:
Szlachta, Małgorzata; Chubar, Natalia
Abstract:
In this study, the adsorptive removal of selenium(IV) and selenium(VI) from water by a newly developed ion exchange adsorbent, based on Fe(III) and Mn(III) hydrous oxides, was examined. This study was conducted to determine the influence of various operating parameters, such as initial anion concentration, contact time, adsorbent dose, pH, solution temperature, and the presence of competitive anions, on the treatment performance. The high Se(IV) adsorptive capacity of the adsorbent (up to 41.02. mg/g at pH 4) was due to its high affinity for selenite, as reflected in the fast rate of uptake (batch studies) and an efficient long-term removal (column experiments). Although adsorption of anions traditionally decreases as pH increases, the mixed adsorbent was capable of purifying large volumes of Se(IV)-containing water (at pH 7) to reach concentrations lower than 10 μg/L, which meets the European Commission standards. The presence of sulphate and carbonate did not influence Se(IV) adsorption. However, high phosphate and silicate concentrations may have decreased the removal efficiency of Se(IV). Data from the batch and column adsorption experiments were fitted with a number of approved models, which revealed the adsorption mechanism and allowed for a comparison of the results. © 2012 Elsevier B.V.
Citation:
Szlachta M, Chubar N (2013) The application of Fe–Mn hydrous oxides based adsorbent for removing selenium species from water. Chemical Engineering Journal 217: 159–168. Available: http://dx.doi.org/10.1016/j.cej.2012.11.100.
Publisher:
Elsevier BV
Journal:
Chemical Engineering Journal
KAUST Grant Number:
KUK-C1-017-12
Issue Date:
Feb-2013
DOI:
10.1016/j.cej.2012.11.100
Type:
Article
ISSN:
1385-8947
Sponsors:
This study was funded by the King Abdullah University of Science and Technology (KAUST), award No. KUK-C1-017-12, to Utrecht University.
Appears in Collections:
Publications Acknowledging KAUST Support

Full metadata record

DC FieldValue Language
dc.contributor.authorSzlachta, Małgorzataen
dc.contributor.authorChubar, Nataliaen
dc.date.accessioned2016-02-28T06:31:31Zen
dc.date.available2016-02-28T06:31:31Zen
dc.date.issued2013-02en
dc.identifier.citationSzlachta M, Chubar N (2013) The application of Fe–Mn hydrous oxides based adsorbent for removing selenium species from water. Chemical Engineering Journal 217: 159–168. Available: http://dx.doi.org/10.1016/j.cej.2012.11.100.en
dc.identifier.issn1385-8947en
dc.identifier.doi10.1016/j.cej.2012.11.100en
dc.identifier.urihttp://hdl.handle.net/10754/599878en
dc.description.abstractIn this study, the adsorptive removal of selenium(IV) and selenium(VI) from water by a newly developed ion exchange adsorbent, based on Fe(III) and Mn(III) hydrous oxides, was examined. This study was conducted to determine the influence of various operating parameters, such as initial anion concentration, contact time, adsorbent dose, pH, solution temperature, and the presence of competitive anions, on the treatment performance. The high Se(IV) adsorptive capacity of the adsorbent (up to 41.02. mg/g at pH 4) was due to its high affinity for selenite, as reflected in the fast rate of uptake (batch studies) and an efficient long-term removal (column experiments). Although adsorption of anions traditionally decreases as pH increases, the mixed adsorbent was capable of purifying large volumes of Se(IV)-containing water (at pH 7) to reach concentrations lower than 10 μg/L, which meets the European Commission standards. The presence of sulphate and carbonate did not influence Se(IV) adsorption. However, high phosphate and silicate concentrations may have decreased the removal efficiency of Se(IV). Data from the batch and column adsorption experiments were fitted with a number of approved models, which revealed the adsorption mechanism and allowed for a comparison of the results. © 2012 Elsevier B.V.en
dc.description.sponsorshipThis study was funded by the King Abdullah University of Science and Technology (KAUST), award No. KUK-C1-017-12, to Utrecht University.en
dc.publisherElsevier BVen
dc.subjectAdsorptionen
dc.subjectFe-Mn hydrous oxideen
dc.subjectSelenateen
dc.subjectSeleniteen
dc.subjectWater treatmenten
dc.titleThe application of Fe–Mn hydrous oxides based adsorbent for removing selenium species from wateren
dc.typeArticleen
dc.identifier.journalChemical Engineering Journalen
dc.contributor.institutionUtrecht University, Utrecht, Netherlandsen
dc.contributor.institutionPolitechnika Wroclawska, Wroclaw, Polanden
dc.contributor.institutionGlasgow Caledonian University, Glasgow, United Kingdomen
kaust.grant.numberKUK-C1-017-12en
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