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dc.contributor.authorRaclavská, Helena
dc.contributor.authorMatýsek, Dalibor
dc.contributor.authorRaclavský, Konstantin
dc.contributor.authorJuchelková, Dagmar
dc.date.accessioned2010-02-22T08:33:47Z
dc.date.available2010-02-22T08:33:47Z
dc.date.issued2010
dc.identifier.citationFuel Processing Technology. 2010, vol. 91, issue 2, p. 150-157.en
dc.identifier.issn0378-3820
dc.identifier.urihttp://hdl.handle.net/10084/78200
dc.description.abstractThe application of NEUTREC® technology – desulphurisation by means of sodium bicarbonate – has been tested at the Trebovice coal-fired power plant (Ostrava, Czech Republic). This technology significantly influences the chemical composition of fly ash and the leachability of total dissolved substances (TDS), e.g., sulphates, fluorides and oxyanions (Se, Sb, Cr, As), which are monitored according to the Council of the European Union Decision 2003/33/EC. An increase of TDS in the water leachate from the fly ash obtained at 60% desulphurisation was influenced by sodium content, which is present in the form of Na+ ions (85–90%). The percentages of sodium sulphate and sodium carbonate were between 5 and 10% of the total sodium content. In order to decrease the leachability of TDS, sodium, sulphates and oxyanion mixtures were prepared containing a sorbent (60% bentonite) and mixed with desulphurised and non-desulphurised fly ash in various ratios. The addition of CaO resulted in the formation of a new mineral phase, burkeite. None of the applied technologies tested for the processed fly ash resulted in the preparation of a water leachate which complied in all monitored parameters to the requirements of Council Decision 2003/33 EC for nonhazardous wastes.en
dc.language.isoenen
dc.publisherElsevieren
dc.relation.ispartofseriesFuel Processing Technologyen
dc.relation.urihttps://doi.org/10.1016/j.fuproc.2009.09.004en
dc.subjectfly ashen
dc.subjectdesulphurisationen
dc.subjectNEUTREC®en
dc.subjectoxyanionsen
dc.subjectleachabilityen
dc.titleGeochemistry of fly ash from desulphurisation process performed by sodium bicarbonateen
dc.typearticleen
dc.identifier.locationNení ve fondu ÚKen
dc.identifier.doi10.1016/j.fuproc.2009.09.004
dc.identifier.wos000274122200004


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