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dc.contributor.authorMayoral Gastón, María del Carmenes_ES
dc.contributor.authorAndrés Gimeno, José Manueles_ES
dc.contributor.authorGimeno, M. P.es_ES
dc.date.accessioned2018-07-26T10:41:41Z-
dc.date.available2018-07-26T10:41:41Z-
dc.date.issued2012-11-26-
dc.identifier.citationFuel 106: 448-454 (2013)es_ES
dc.identifier.issn0016-2361-
dc.identifier.urihttp://hdl.handle.net/10261/167965-
dc.description.abstractMineral carbonation is one of the alternatives considered for CO2 sequestration. This consists of inducing the artificial weathering of alkaline minerals to produce stable carbonate solids. This work presents the wet carbonation of lime-rich ashes from the fluidized bed combustion of two different fuels: a Spanish sulfur-rich lignite, with calcium carbonate and quartz as main mineral constituents, and the waste produced during the extraction of the coal. The novelty of the work is its experimental approach, which explores all the variables (pH, temperature, time, liquid to solid ratio, NaCl ratio) from a statistical survey centered on finding optimized conditions that maximize the degree of carbonation. CO2 uptake is determined by direct thermogravimetric tests. The results indicate that high carbonation efficiency (78% efficiency) is achieved for both solids at basic pH and moderate treatment times. Those conditions cause anhydrite to dissolve, increasing the availability of Ca2+ for reprecipitation as carbonate and hydroxide. At neutral pH, 72% conversion efficiency is equivalent to a capture of 8% of the CO2 theoretically emitted in the combustion of coal wastes. The proposed conditions for fly ash carbonation enables rapid CO2 capture that is applicable for upscaling and industrial use.es_ES
dc.description.sponsorshipThe authors would like to express their gratitude to the Government of Aragon and La Caixa for their financial support of the work through the project DGA-LC-025/2010, and to Carboníferas del Ebro for supplying the fuels used in this work. M.P. Gimeno acknowledges support from the Spanish National Research Council (CSIC) through their JAE-Doc program.es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.rightsopenAccesses_ES
dc.subjectCO2 capturees_ES
dc.subjectWet carbonationes_ES
dc.subjectCoal wastees_ES
dc.subjectFly ashes_ES
dc.subjectThermal decarbonationes_ES
dc.titleOptimization of mineral carbonation process for CO2 sequestration by lime-rich coal asheses_ES
dc.typeartículoes_ES
dc.identifier.doi10.1016/j.fuel.2012.11.042-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.fuel.2012.11.042es_ES
dc.contributor.funderGobierno de Aragónes_ES
dc.contributor.funderLa Caixaes_ES
dc.contributor.funderConsejo Superior de Investigaciones Científicas (España)es_ES
dc.relation.csices_ES
oprm.item.hasRevisionno ko 0 false*
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003339es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100010067es_ES
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