Thermo-acoustic catalytic effect on oxidizing woody torrefaction

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MetadadosDescriçãoIdioma
Autor(es): dc.creatorSilveira, Edgar Amaral-
Autor(es): dc.creatorGalvão, Luiz Gustavo Oliveira-
Autor(es): dc.creatorMacedo, Lucélia Alves de-
Autor(es): dc.creatorSá, Isabella A.-
Autor(es): dc.creatorChaves, Bruno Sant'Anna-
Autor(es): dc.creatorMorais, Marcus Vinícius Girão de-
Autor(es): dc.creatorRousset, Patrick-
Autor(es): dc.creatorCaldeira-Pires, Armando de Azevedo-
Data de aceite: dc.date.accessioned2024-10-23T15:40:39Z-
Data de disponibilização: dc.date.available2024-10-23T15:40:39Z-
Data de envio: dc.date.issued2021-01-11-
Data de envio: dc.date.issued2021-01-11-
Data de envio: dc.date.issued2020-10-27-
Fonte completa do material: dc.identifierhttps://repositorio.unb.br/handle/10482/39887-
Fonte completa do material: dc.identifierhttps://doi.org/10.3390/pr8111361-
Fonte completa do material: dc.identifierhttps://orcid.org/0000-0003-4800-4513-
Fonte completa do material: dc.identifierhttps://orcid.org/0000-0003-4809-5291-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/889068-
Descrição: dc.descriptionThe torrefaction (mild pyrolysis) process modifies biomass chemical and physical properties and is applied as a thermochemical route to upgrade solid fuel. In this work, the catalytic effect of thermo-acoustic on oxidizing woody torrefaction is assessed. The combined effect of two acoustic frequencies (1411, 2696 Hz) and three temperatures (230, 250, and 290 °C) was evaluated through weight loss and its deviation curves, calculated torrefaction severity index (TSI), as well as proximate, calorific, and compression strength analysis of Eucalyptus grandis. A new index to account for the catalytic effects on torrefaction (TCEI) was introduced, providing the quantitative analysis of acoustic frequencies influence. A two-step consecutive reaction numerical model allowed the thermo-acoustic experiment evaluation. For instance, the thermogravimetric profiles revealed that the acoustic field has a catalytic effect on wood torrefaction and enhances the biomass oxidation process for severe treatments. The kinetic simulation of the acoustic coupling resulted in faster conversion rates for the solid pseudo-components showing the boosting effect of acoustic frequencies in anticipating hemicellulose decomposition and enhancing second step oxidizing reaction.-
Formato: dc.formatapplication/pdf-
Publicador: dc.publisherMDPI-
Direitos: dc.rightsAcesso Aberto-
Direitos: dc.rights© 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).-
Palavras-chave: dc.subjectTorrefação-
Palavras-chave: dc.subjectBiomassa-
Palavras-chave: dc.subjectTermoacústica-
Palavras-chave: dc.subjectCatálise-
Palavras-chave: dc.subjectModelagem numérica-
Título: dc.titleThermo-acoustic catalytic effect on oxidizing woody torrefaction-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional – UNB

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