A Study of Physicochemical Properties of Stockpile and Ponded Coal Ash

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dc.contributor.authorŠulc, Rostislavcs
dc.contributor.authorŠídlová, Martinacs
dc.contributor.authorFormáček, Petrcs
dc.contributor.authorSnop, Romancs
dc.contributor.authorŠkvára, Františekcs
dc.contributor.authorPolonská, Adélacs
dc.coverage.issue10cs
dc.coverage.volume15cs
dc.date.issued2023-06-09cs
dc.description.abstractThe article describes chemical and also selected physical properties of ponded high temperature fly ash (FA) and bottom ash (BA) from a Melnik lignite power plant located in the Czech Republic. The research was carried out on samples obtained from drills with a depth of up to 54 m and the age of the samples retrieved from the lowest layers of the stockpile dating back to 1960. At the same time, a comparison was made with fresh fly ash and fresh bottom ash obtained from the identical power plant. The study analyzed a total of 98 stockpile samples. The properties selected were studied across the entire stockpile, namely moisture content, specific density, specific surface, carbon content, elemental and phase composition, pH, electrical conductivity and leachability. SEM analyses were also performed. The performed measurements of chemical properties proved the chemical stability of the material even after several decades of storage in the stockpile. The largest changes are evident in the results of the analyses related to the leachability of SO3, Cl- and F-. In contrast, the pH does not change significantly, and the composition is pH neutral or alkaline. Regarding ponded BA, particle disintegration was noted depending on the increasing core borehole depth.en
dc.formattextcs
dc.format.extent15cs
dc.format.mimetypeapplication/pdfcs
dc.identifier.citationMaterials . 2023, vol. 15, issue 10, 15 p.en
dc.identifier.doi10.3390/ma15103653cs
dc.identifier.issn1996-1944cs
dc.identifier.other183221cs
dc.identifier.urihttp://hdl.handle.net/11012/244979
dc.language.isoencs
dc.publisherMDPIcs
dc.relation.ispartofMaterialscs
dc.relation.urihttps://www.mdpi.com/1996-1944/15/10/3653cs
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.subjectstockpile ashponded ashrecoveryCCPsphysicochemical propertiescoal combustionen
dc.titleA Study of Physicochemical Properties of Stockpile and Ponded Coal Ashen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
sync.item.dbidVAV-183221en
sync.item.dbtypeVAVen
sync.item.insts2025.02.03 15:38:28en
sync.item.modts2025.01.17 15:20:21en
thesis.grantorVysoké učení technické v Brně. Fakulta chemická. Ústav chemie materiálůcs
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