Calorific Power Improvement of Wood by Heat Treatment and Its Relation to Chemical Composition
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.19/6519 |
Resumo: | Chemical composition influences the calorific power of wood, mainly due to the calorific power of structural compounds and extractives. Heat treatment changes the chemical composition of treated wood. This work studies the relationship between chemical composition and calorific power improvement by heat treatment. Samples were heat-treated by the ThermoWood process ® for 1 h and 2 h. High heating value (HHV) and chemical composition; lignin, cellulose, hemicelluloses and extractives in dichloromethane, ethanol, and water were determined. The HHV of untreated wood ranged between 18.54–19.92 MJ/kg and increased with heat treatment for all the tested species. A positive linear correlation was found between HHV and Klason lignin (R2 = 0.60). A negative trend was observed for holocellulose, cellulose, and hemicelluloses content against HHV, but with low determination coefficients for linear regression. The best adjust for polysaccharides was found for hemicelluloses content. A positive correlation could be found for dichloromethane extractives (R2 = 0.04). The same was obtained in relation to ethanol extractives with R2 = 0.20. For water and total extractives, no clear positive or negative trends could be achieved. The results showed that the HHV of wood increased with heat treatment and that this increase was mainly due to the increase in lignin content. |
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Calorific Power Improvement of Wood by Heat Treatment and Its Relation to Chemical Compositioncalorific powerchemical compositioncorrelationsheat treatmentChemical composition influences the calorific power of wood, mainly due to the calorific power of structural compounds and extractives. Heat treatment changes the chemical composition of treated wood. This work studies the relationship between chemical composition and calorific power improvement by heat treatment. Samples were heat-treated by the ThermoWood process ® for 1 h and 2 h. High heating value (HHV) and chemical composition; lignin, cellulose, hemicelluloses and extractives in dichloromethane, ethanol, and water were determined. The HHV of untreated wood ranged between 18.54–19.92 MJ/kg and increased with heat treatment for all the tested species. A positive linear correlation was found between HHV and Klason lignin (R2 = 0.60). A negative trend was observed for holocellulose, cellulose, and hemicelluloses content against HHV, but with low determination coefficients for linear regression. The best adjust for polysaccharides was found for hemicelluloses content. A positive correlation could be found for dichloromethane extractives (R2 = 0.04). The same was obtained in relation to ethanol extractives with R2 = 0.20. For water and total extractives, no clear positive or negative trends could be achieved. The results showed that the HHV of wood increased with heat treatment and that this increase was mainly due to the increase in lignin content.Repositório Científico do Instituto Politécnico de ViseuDomingos, IdalinaAyata, UmitFerreira, JoséCruz-Lopes, LuísaSen, AliSahin, SirriEsteves, Bruno2021-01-06T11:58:07Z20202020-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.19/6519engDomingos, I., Ayata, U., Ferreira, J., Cruz-Lopes, L., Sen, A., Sahin, S., & Esteves, B. (2020). Calorific Power Improvement of Wood by Heat Treatment and Its Relation to Chemical Composition. Energies, 13(20), 5322. MDPI AG. Retrieved from http://dx.doi.org/10.3390/en1320532210.3390/en13205322info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-01-16T15:28:46ZPortal AgregadorONG |
dc.title.none.fl_str_mv |
Calorific Power Improvement of Wood by Heat Treatment and Its Relation to Chemical Composition |
title |
Calorific Power Improvement of Wood by Heat Treatment and Its Relation to Chemical Composition |
spellingShingle |
Calorific Power Improvement of Wood by Heat Treatment and Its Relation to Chemical Composition Domingos, Idalina calorific power chemical composition correlations heat treatment |
title_short |
Calorific Power Improvement of Wood by Heat Treatment and Its Relation to Chemical Composition |
title_full |
Calorific Power Improvement of Wood by Heat Treatment and Its Relation to Chemical Composition |
title_fullStr |
Calorific Power Improvement of Wood by Heat Treatment and Its Relation to Chemical Composition |
title_full_unstemmed |
Calorific Power Improvement of Wood by Heat Treatment and Its Relation to Chemical Composition |
title_sort |
Calorific Power Improvement of Wood by Heat Treatment and Its Relation to Chemical Composition |
author |
Domingos, Idalina |
author_facet |
Domingos, Idalina Ayata, Umit Ferreira, José Cruz-Lopes, Luísa Sen, Ali Sahin, Sirri Esteves, Bruno |
author_role |
author |
author2 |
Ayata, Umit Ferreira, José Cruz-Lopes, Luísa Sen, Ali Sahin, Sirri Esteves, Bruno |
author2_role |
author author author author author author |
dc.contributor.none.fl_str_mv |
Repositório Científico do Instituto Politécnico de Viseu |
dc.contributor.author.fl_str_mv |
Domingos, Idalina Ayata, Umit Ferreira, José Cruz-Lopes, Luísa Sen, Ali Sahin, Sirri Esteves, Bruno |
dc.subject.por.fl_str_mv |
calorific power chemical composition correlations heat treatment |
topic |
calorific power chemical composition correlations heat treatment |
description |
Chemical composition influences the calorific power of wood, mainly due to the calorific power of structural compounds and extractives. Heat treatment changes the chemical composition of treated wood. This work studies the relationship between chemical composition and calorific power improvement by heat treatment. Samples were heat-treated by the ThermoWood process ® for 1 h and 2 h. High heating value (HHV) and chemical composition; lignin, cellulose, hemicelluloses and extractives in dichloromethane, ethanol, and water were determined. The HHV of untreated wood ranged between 18.54–19.92 MJ/kg and increased with heat treatment for all the tested species. A positive linear correlation was found between HHV and Klason lignin (R2 = 0.60). A negative trend was observed for holocellulose, cellulose, and hemicelluloses content against HHV, but with low determination coefficients for linear regression. The best adjust for polysaccharides was found for hemicelluloses content. A positive correlation could be found for dichloromethane extractives (R2 = 0.04). The same was obtained in relation to ethanol extractives with R2 = 0.20. For water and total extractives, no clear positive or negative trends could be achieved. The results showed that the HHV of wood increased with heat treatment and that this increase was mainly due to the increase in lignin content. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020 2020-01-01T00:00:00Z 2021-01-06T11:58:07Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10400.19/6519 |
url |
http://hdl.handle.net/10400.19/6519 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Domingos, I., Ayata, U., Ferreira, J., Cruz-Lopes, L., Sen, A., Sahin, S., & Esteves, B. (2020). Calorific Power Improvement of Wood by Heat Treatment and Its Relation to Chemical Composition. Energies, 13(20), 5322. MDPI AG. Retrieved from http://dx.doi.org/10.3390/en13205322 10.3390/en13205322 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
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repository.mail.fl_str_mv |
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1777301973529264128 |