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dc.contributor.authorRodriguez Rausis, Kwon Bok
dc.contributor.authorCwik, Agnieszka Lucyna
dc.contributor.authorCasanova Hormaechea, Ignasi
dc.contributor.authorZarebska, Katarzyna
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental
dc.date.accessioned2021-11-16T16:08:25Z
dc.date.available2021-11-16T16:08:25Z
dc.date.issued2021-11
dc.identifier.citationRodriguez, K. [et al.]. Carbonation of high-Ca fly ashes under flue gas conditions: implications for their valorization in the construction industry. "Crystals", Novembre 2021, vol. 11, núm. 11, p. 1314:1-1314:13.
dc.identifier.issn2073-4352
dc.identifier.urihttp://hdl.handle.net/2117/356559
dc.description.abstractThe utilization of high-calcium fly ashes (HCFA) from coal-fired power plants in the construction industry is problematic, since their high free lime contents can lead to durability problems. In this research, the carbonation of a high-CaO fly ash has been carried out using simulated flue gas and concentrated CO2, with the aim to assess the valorization potential of such materials in the construction industry. The results show that, at 7 bars total pressure, an up to 36% carbonation efficiency can be achieved in just 30 min when pure CO2 is used; a comparable result with flue gas requires about 4 h of reaction. On the other hand, experiments carried out at atmospheric pressure show significantly different carbonation efficiencies depending on the CO2 concentration of the gas used. All experiments resulted in a substantial reduction in the original free lime content, and after reaction times of 4 h (at atmospheric pressure) and pressures of 7 bars (for any reaction time >30 min), the final free lime values were low enough to comply with the requirements of European Standards for their utilization as additions in cement.
dc.description.sponsorshipThis work has been partially funded by the Government of Catalonia through the FI-2017 program for the recruitment of early-stage researchers. Contract number: 2017 FI_B00129 (K.R.) and by the Erasmus Mundus Joint Doctoral Programme on Environomical Pathways to Sustainable Energy Services (SELECTp; A. C.). Grant ENE2015-63969-C3-1-R (Spanish Government; IC co-I) and AGH grant number 16.16.210.476 (KZ).
dc.language.isoeng
dc.publisherMultidisciplinary Digital Publishing Institute (MDPI)
dc.rightsAttribution 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Enginyeria civil::Materials i estructures
dc.subject.lcshFly ash--Recycling
dc.subject.otherCarbon dioxide
dc.subject.otherIndustrial waste
dc.subject.otherGas–solid carbonation
dc.subject.otherCoal fly ash
dc.titleCarbonation of high-Ca fly ashes under flue gas conditions: implications for their valorization in the construction industry
dc.typeArticle
dc.subject.lemacCendres volants
dc.contributor.groupUniversitat Politècnica de Catalunya. NEMEN - Nanoenginyeria de materials aplicats a l'energia
dc.identifier.doi10.3390/cryst11111314
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://www.mdpi.com/2073-4352/11/11/1314
dc.rights.accessOpen Access
local.identifier.drac32221411
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/MINECO//ENE2015-63969-C3-1-R/ES/MICROREACTORES CON TECNOLOGIA DE IMPRESION 3D PARA LA GENERACION CATALITICA Y FOTOCATALITICA DE HIDROGENO/
local.citation.authorRodriguez, K.; Cwik, A.; Casanova, I.; Zarebska , K.
local.citation.publicationNameCrystals
local.citation.volume11
local.citation.number11
local.citation.startingPage1314:1
local.citation.endingPage1314:13
dc.description.sdgObjectius de Desenvolupament Sostenible::13 - Acció per al Clima
dc.description.sdgObjectius de Desenvolupament Sostenible::7 - Energia Assequible i No Contaminant


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Attribution 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution 3.0 Spain