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dc.contributor.authorRigopoulos, I.en
dc.contributor.authorPetallidou, Klito C.en
dc.contributor.authorVasiliades, M. A.en
dc.contributor.authorDelimitis, A.en
dc.contributor.authorIoannou, I.en
dc.contributor.authorEfstathiou, A. M.en
dc.contributor.authorKyratsi, Theodoraen
dc.creatorRigopoulos, I.en
dc.creatorPetallidou, Klito C.en
dc.creatorVasiliades, M. A.en
dc.creatorDelimitis, A.en
dc.creatorIoannou, I.en
dc.creatorEfstathiou, A. M.en
dc.creatorKyratsi, Theodoraen
dc.description.abstractThe use of solid wastes rich in Ca2+, Mg2+ and Fe2+ for the ex situ sequestration of CO2 could provide an economically and technologically viable option for the reduction of anthropogenic CO2 emissions. Here, we investigate for the first time the potential use of waste materials from mafic rock quarries as a feedstock for the sequestration of CO2 by ex situ mineral carbonation. The experimental procedure was performed on a waste material from a dolerite quarry operating in the Troodos ophiolite (Cyprus). The ball milling process was applied to this quarry waste in order to create nanomaterials with enhanced CO2 adsorption capacity. Through CO2 chemisorption followed by temperature-programmed desorption (CO2-TPD) experiments, the optimum ball milling conditions were found (20 h of wet ball milling with 50 wt% ethanol as process control agent), leading to an enhancement of the CO2-storage capacity of the waste material by a factor of ∼120. This enhancement of CO2 uptake is closely related to (i) the reduction of particle size to the nanoscale, (ii) the structural disordering of the constituent silicate minerals, and (iii) the presence of augite nanocrystals after ball milling. The experimental results suggest that waste materials from dolerite quarries may indeed be used as feedstock for the ex situ mineralization of CO2. They also strongly demonstrate that ball milling is a very promising technique for optimizing the ex situ carbonation of this waste materialen
dc.description.abstractthus the proposed methodology could be a fundamental part of a future carbon sequestration strategy. © 2016 Elsevier Ltd.en
dc.sourceJournal of CO2 Utilizationen
dc.subjectCarbon dioxideen
dc.subjectBall millingen
dc.subjectMilling (machining)en
dc.subjectParticle sizeen
dc.subjectBall milling processen
dc.subjectProcess control agentsen
dc.subjectCO2 chemisorptionen
dc.subjectMineral carbonationen
dc.subjectSilicate mineralsen
dc.subjectTemperature programmed desorptionen
dc.subjectAdsorption capacitiesen
dc.subjectAugite nanocrystalsen
dc.subjectCarbon sequestrationen
dc.subjectExperimental procedureen
dc.subjectMilling conditionsen
dc.subjectQuarry wasteen
dc.subjectStructural disorderingen
dc.titleOn the potential use of quarry waste material for CO2 sequestrationen
dc.description.endingpage370Πολυτεχνική Σχολή / Faculty of EngineeringΤμήμα Μηχανικών Μηχανολογίας και Κατασκευαστικής / Department of Mechanical and Manufacturing Engineering
dc.contributor.orcidKyratsi, Theodora [0000-0003-2916-1708]

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