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Título: | Capture of CO2 by vermiculite impregnated with CaO. |
Autor(es): | Pereira, Matheus Henrique Simplício Santos, Cláudio Gouvêa dos Lima, Geraldo Magela de Bruziquesi, Carlos Giovani Oliveira Oliveira, Victor de Alvarenga |
Palavras-chave: | Calcium oxide Isoconversional Method Kinetics |
Data do documento: | 2022 |
Referência: | PEREIRA, M. H. S. et al. Capture of CO2 by vermiculite impregnated with CaO. Carbon Management, v. 13, p. 117-126, 2022. Disponível em: <https://www.tandfonline.com/doi/full/10.1080/17583004.2021.2023050>. Acesso em: 29 abr. 2022. |
Resumo: | Vermiculite 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). |
URI: | http://www.repositorio.ufop.br/jspui/handle/123456789/15593 |
DOI: | https://doi.org/10.1080/17583004.2021.2023050 |
ISSN: | 1758-3012 |
Licença: | This 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. |
Aparece nas coleções: | DEMET - Artigos publicados em periódicos |
Arquivos associados a este item:
Arquivo | Descrição | Tamanho | Formato | |
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ARTIGO_CaptureCO2Vermiculite.pdf | 3,04 MB | Adobe PDF | Visualizar/Abrir |
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