Application of the compartmental model to the gas–liquid precipitation of CO2-Ca(OH)2 aqueous system in a stirred tank

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorZhao, Wenlien_US
dc.contributor.authorBuffo, Antonioen_US
dc.contributor.authorAlopaeus, Villeen_US
dc.contributor.authorHan, Bingen_US
dc.contributor.authorLouhi-Kultanen, Marjattaen_US
dc.contributor.departmentDepartment of Biotechnology and Chemical Technologyen
dc.contributor.departmentDepartment of Chemical and Metallurgical Engineeringen
dc.date.accessioned2018-02-09T10:08:28Z
dc.date.available2018-02-09T10:08:28Z
dc.date.embargoinfo:eu-repo/date/embargoEnd/2018-02-02en_US
dc.date.issued2017-01-01en_US
dc.description.abstractA compartmental model is formulated to assess the influence of fluid dynamics on the gas–liquid precipitation of CO2(g)-Ca(OH)2(aq) system in a stirred tank reactor. The model combines the description of the flow field with several sub-models, namely gas to liquid mass transfer, chemical reaction, precipitation, and population balance for both gas bubbles and solid crystals. The modeling predictions, including the average volumetric mass transfer coefficient, the concentration of calcium ions, the pH of the solution and the Sauter mean diameter of the final crystal products are eventually compared with measurements carried out on a pilot-scale stirred tank. The results show that the local volumetric mass transfer rate and the final particle sizes distribution of the crystals are significantly affected by high local turbulence near the impeller. The local information simulated by the compartmental model, such as mass transfer rate, gas hold up and particle size of crystals and bubbles are important for the design and scaling of gas–liquid precipitators, with a computational time which is of several orders of magnitude faster than a full CFD computation.en
dc.description.versionPeer revieweden
dc.format.extent9
dc.format.extent378-386
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationZhao, W, Buffo, A, Alopaeus, V, Han, B & Louhi-Kultanen, M 2017, ' Application of the compartmental model to the gas–liquid precipitation of CO 2 -Ca(OH) 2 aqueous system in a stirred tank ', AIChE Journal, vol. 63, no. 1, pp. 378-386 . https://doi.org/10.1002/aic.15567en
dc.identifier.doi10.1002/aic.15567en_US
dc.identifier.issn0001-1541
dc.identifier.issn1547-5905
dc.identifier.otherPURE UUID: f736ada8-8aec-4c7c-b070-d5da468072eben_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/f736ada8-8aec-4c7c-b070-d5da468072eben_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85000401632&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/15982880/Paper_3_MS.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/30035
dc.identifier.urnURN:NBN:fi:aalto-201802091532
dc.language.isoenen
dc.relation.ispartofseriesAICHE JOURNALen
dc.relation.ispartofseriesVolume 63, issue 1en
dc.rightsopenAccessen
dc.subject.keywordcompartmental modelen_US
dc.subject.keywordgas–liquid precipitationen_US
dc.subject.keywordmass transferen_US
dc.subject.keywordpopulation balanceen_US
dc.titleApplication of the compartmental model to the gas–liquid precipitation of CO2-Ca(OH)2 aqueous system in a stirred tanken
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionacceptedVersion

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