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Removal of metal(oid)s from contaminated water using iron-coated peat sorbent
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.ORCID iD: 0000-0001-5375-8825
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Geosciences and Environmental Engineering.
Department of Sustainable Development, Environmental Science and Engineering, Royal Institute of Technology.
Department of Agricultural Sciences, University of Naples Federico II.
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2018 (English)In: Chemosphere, ISSN 0045-6535, E-ISSN 1879-1298, Vol. 198, p. 290-296Article in journal (Refereed) Published
Abstract [en]

This study aimed at combining iron and peat to produce a sorbent suitable for a simultaneous removal of cations and anions from a solution. Peat powder, an industrial residue, was coated with iron by immersing peat into iron salt solutions. The adsorption efficiency of the newly produced sorbent towards As, Cr, Cu and Zn was tested by means of batch adsorption experiments at a constant pH value of 5. Coating of Fe on peat significantly increased the adsorption of As (from <5% to 80%) and Cr (from <3% to 25%) in comparison to uncoated peat. Removal of cations on coated peat slightly decreased (by 10–15%), yet remained within acceptable range. Electron Microscopy combined with X-Ray Energy Dispersive Spectroscopy revealed that iron coating on the peat was rather homogenous and As and Cr were abundantly adsorbed on the surface. By contrast, Cu and Zn displayed a sparing distribution on the surface of the iron coated peat. These results indicate that iron-peat simultaneously target sufficient amounts of both cations and anions and can be used for a one-step treatment of contaminated groundwater

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 198, p. 290-296
National Category
Other Environmental Engineering
Research subject
Waste Science and Technology
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URN: urn:nbn:se:ltu:diva-67545DOI: 10.1016/j.chemosphere.2018.01.139ISI: 000427338800033PubMedID: 29421741Scopus ID: 2-s2.0-85041488356OAI: oai:DiVA.org:ltu-67545DiVA, id: diva2:1180910
Note

Validerad;2018;Nivå 2;2018-02-07 (andbra)

Available from: 2018-02-07 Created: 2018-02-07 Last updated: 2018-05-15Bibliographically approved

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CiteExportLink to record
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