dc.creator | Moreno González, H. | es |
dc.creator | Pontiga Romero, Francisco de Paula | es |
dc.creator | Valverde Millán, José Manuel | es |
dc.date.accessioned | 2024-01-15T20:05:10Z | |
dc.date.available | 2024-01-15T20:05:10Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Moreno González, H., Pontiga Romero, F.d.P. y Valverde Millán, J.M. (2020). Low concentration CO2 capture in fluidized beds of Ca(OH)2 as affected by storage humidity. Chemical Engineering Journal, 407, 1-9. https://doi.org/10.1016/j.cej.2020.127179. | |
dc.identifier.issn | 1385-8947 | es |
dc.identifier.issn | 1873-3212 | es |
dc.identifier.uri | https://hdl.handle.net/11441/153412 | |
dc.description.abstract | Carbon negative emission technologies (NETs) such as CO2 direct air capture (DAC) are being already considered
as necessary for climate change mitigation. This paper investigates CO2 capture at room temperature and atmospheric pressure by a fluidized bed of Ca(OH)2 powder as influenced by the relative humidity (RH) to which
this sorbent was exposed during storage. Humidity is precisely controlled by means of several supersaturared salt
solutions, and FTIR spectrometry is used to measure accurately the time evolution of CO2 and H2O concentrations in the effluent gas. Results show that CO2 capture is promoted by an increase of the storage RH. The
observed effect is particularly important for very high storage RH (~100%, near the dew point). After the capture
tests, quantitative analyses of sample composition have been carried out using X-ray powder diffractometry.
These analyses have revealed that the CaCO3 content after CO2 capture originates from carbonation in samples
that were stored under ~100% RH. On the other hand, in samples stored under low to moderate RH, the presence
of CaCO3 is significantly reduced, indicating that most of CO2 capture might take place through physical
adsorption. | es |
dc.format | application/pdf | es |
dc.format.extent | 9 p. | es |
dc.language.iso | eng | es |
dc.publisher | Elsevier | es |
dc.relation.ispartof | Chemical Engineering Journal, 407, 1-9. | |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internacional | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | * |
dc.subject | CO2 capture | es |
dc.subject | Calcium hydroxide | es |
dc.subject | Direct air capture | es |
dc.subject | Pre-hydration | es |
dc.subject | Storage conditions | es |
dc.subject | Fluidized bed | es |
dc.subject | Carbonation | es |
dc.title | Low concentration CO2 capture in fluidized beds of Ca(OH)2 as affected by storage humidity | es |
dc.type | info:eu-repo/semantics/article | es |
dcterms.identifier | https://ror.org/03yxnpp24 | |
dc.type.version | info:eu-repo/semantics/acceptedVersion | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Física Aplicada II | es |
dc.contributor.affiliation | Universidad de Sevilla. Departamento de Electrónica y Electromagnetismo | es |
dc.relation.publisherversion | https://doi.org/10.1016/j.cej.2020.127179 | es |
dc.identifier.doi | 10.1016/j.cej.2020.127179 | es |
dc.journaltitle | Chemical Engineering Journal | es |
dc.publication.issue | 407 | es |
dc.publication.initialPage | 1 | es |
dc.publication.endPage | 9 | es |