Capture of CO2 by vermiculite impregnated with CaO.

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorPereira, Matheus Henrique Simplício-
Autor(es): dc.creatorSantos, Cláudio Gouvêa dos-
Autor(es): dc.creatorLima, Geraldo Magela de-
Autor(es): dc.creatorBruziquesi, Carlos Giovani Oliveira-
Autor(es): dc.creatorOliveira, Victor de Alvarenga-
Data de aceite: dc.date.accessioned2025-08-21T15:40:59Z-
Data de disponibilização: dc.date.available2025-08-21T15:40:59Z-
Data de envio: dc.date.issued2022-10-04-
Data de envio: dc.date.issued2022-10-04-
Data de envio: dc.date.issued2021-
Fonte completa do material: dc.identifierhttp://www.repositorio.ufop.br/jspui/handle/123456789/15593-
Fonte completa do material: dc.identifierhttps://doi.org/10.1080/17583004.2021.2023050-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1021473-
Descrição: dc.descriptionVermiculite samples were impregnated with different amounts of calcium oxide by the con- ventional thermal heating technique and subject to CO2 capture experiments in thermal analysis equipment. The amount of CO2 captured by calcium oxide increased from 13 g of CO2 per mol of CaO to 16.8 g of CO2 per mol of CaO when the experiments were carried out with pure calcium oxide and vermiculite impregnated with CaO (1:1), respectively. Integral isoconversional methods of Kissinger-Akahira-Sunose (KAS) and Osawa-Flynn-Wall (OFW) were used for the kinetic study of the process and good correlation coefficients were achieved. The apparent activation energy values showed that for low conversions (a < 0.3) the controlling step of the process is a mixed step where the chemical reaction and the dif- fusion of the reagents into the vermiculite have rates of the same order of magnitude (20 kJ < Ea < 40 kJ). For higher conversions values (a > 0.3) the apparent activation energy values suggest that the slow step is a chemical step (Ea> 40 kJ).-
Formato: dc.formatapplication/pdf-
Idioma: dc.languageen-
Direitos: dc.rightsaberto-
Direitos: dc.rightsThis is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Fonte: o PDF do artigo.-
Palavras-chave: dc.subjectCalcium oxide-
Palavras-chave: dc.subjectIsoconversional-
Palavras-chave: dc.subjectMethod-
Palavras-chave: dc.subjectKinetics-
Título: dc.titleCapture of CO2 by vermiculite impregnated with CaO.-
Aparece nas coleções:Repositório Institucional - UFOP

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