The Characterization of Fixation of Ba, Pb, and Cu in Alkali-Activated Fly Ash/Blast Furnace Slag Matrix

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dc.contributor.authorKoplík, Jancs
dc.contributor.authorKalina, Lukášcs
dc.contributor.authorMásilko, Jiřícs
dc.contributor.authorŠoukal, Františekcs
dc.coverage.issue9cs
dc.coverage.volume7cs
dc.date.issued2016-06-30cs
dc.description.abstractThe fixation of heavy metals (Ba, Cu, Pb) in an alkali-activated matrix was investigated. The matrix consisted of fly ash and blast furnace slag (BFS). The mixture of NaOH and Na-silicate was used as alkaline activator. Three analytical techniques were used to describe the fixation of heavy metals—X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) equipped with energy dispersive X-ray spectroscopy (EDS), and X-ray powder diffraction (XRD). All heavy metals formed insoluble salts after alkaline activation. Ba was fixed as BaSO4, and only this product was crystalline. EDS mapping showed that Ba was cumulated in some regions and formed clusters. Pb was present in the form of Pb(OH)2 and was dispersed throughout the matrix on the edges of BFS grains. Cu was fixed as Cu(OH)2 and also was cumulated in some regions and formed clusters. Cu was present in two different chemical states; apart from Cu(OH)2, a Cu–O bond was also identified.en
dc.formattextcs
dc.format.extent1-9cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMaterials . 2016, vol. 7, issue 9, p. 1-9.en
dc.identifier.doi10.3390/ma9070533cs
dc.identifier.issn1996-1944cs
dc.identifier.orcid0000-0002-4219-4267cs
dc.identifier.orcid0000-0001-8127-8175cs
dc.identifier.orcid0000-0001-9587-5843cs
dc.identifier.orcid0000-0002-0234-3467cs
dc.identifier.other126850cs
dc.identifier.researcheridQ-2440-2015cs
dc.identifier.scopus25621490100cs
dc.identifier.scopus55255338000cs
dc.identifier.scopus25621858200cs
dc.identifier.urihttp://hdl.handle.net/11012/62261
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMaterialscs
dc.relation.urihttp://www.mdpi.com/1996-1944/9/7/533cs
dc.rightsCreative Commons Attribution 4.0 Internationalcs
dc.rights.accessopenAccesscs
dc.rights.sherpahttp://www.sherpa.ac.uk/romeo/issn/1996-1944/cs
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/cs
dc.subjectfixationen
dc.subjectalkali-activated materialsen
dc.subjectX-ray photoelectron spectroscopyen
dc.subjectheavy metalsen
dc.titleThe Characterization of Fixation of Ba, Pb, and Cu in Alkali-Activated Fly Ash/Blast Furnace Slag Matrixen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-126850en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:37:42en
sync.item.modts2025.01.17 15:14:28en
thesis.grantorVysoké učení technické v Brně. Fakulta chemická. CMV - laboratoř anorganických materiálůcs
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