Formosolv pretreatment to fractionate Paulownia wood following a biorefinery approach: isolation and characterization of the lignin fraction
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/1822/66747 |
Resumo: | Paulownia is a rapid-growth tree with a high biomass production rate per year and low demand of water, which make it very suitable for intercropping systems, as it protects the crops from adverse climatic conditions, benefiting the harvest yields. Moreover, these characteristics make Paulownia a suitable raw material able to be fractionated in an integrated biorefinery scheme to obtain multiple products using a cascade conversion approach. Different delignification pretreatments of biomass have been purposed as a first stage of a lignocellulosic biorefinery. In this study, the formosolv delignification of Paulownia wood was investigated using a second order face-centered factorial design to assess the effects of the independent variables (concentrations of formic and hydrochloric acids and reaction time) on the fractionation of Paulownia wood. The maximum delignification achieved in this study (78.5%) was obtained under following conditions: 60 min, and 95% and 0.05% formic and hydrochloric acid, respectively. In addition, the remained solid phases were analyzed to determine their cellulose content and cooking liquors were also chemically analyzed and characterized. Finally, the recovered lignin by precipitation from formosolv liquor and the pristine lignin (milled wood lignin) in Paulownia wood were characterized and compared by the following techniques FTIR, NMR, high-performance size-exclusion chromatography (HPSEC) and TGA. This complete characterization allowed verifying the capacity of the formosolv process to act on the lignin, causing changes in its structure, which included both phenomena of depolymerization and condensation. |
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Formosolv pretreatment to fractionate Paulownia wood following a biorefinery approach: isolation and characterization of the lignin fractionOrganosolvFractionationLigninCharacterizationPaulowniaScience & TechnologyPaulownia is a rapid-growth tree with a high biomass production rate per year and low demand of water, which make it very suitable for intercropping systems, as it protects the crops from adverse climatic conditions, benefiting the harvest yields. Moreover, these characteristics make Paulownia a suitable raw material able to be fractionated in an integrated biorefinery scheme to obtain multiple products using a cascade conversion approach. Different delignification pretreatments of biomass have been purposed as a first stage of a lignocellulosic biorefinery. In this study, the formosolv delignification of Paulownia wood was investigated using a second order face-centered factorial design to assess the effects of the independent variables (concentrations of formic and hydrochloric acids and reaction time) on the fractionation of Paulownia wood. The maximum delignification achieved in this study (78.5%) was obtained under following conditions: 60 min, and 95% and 0.05% formic and hydrochloric acid, respectively. In addition, the remained solid phases were analyzed to determine their cellulose content and cooking liquors were also chemically analyzed and characterized. Finally, the recovered lignin by precipitation from formosolv liquor and the pristine lignin (milled wood lignin) in Paulownia wood were characterized and compared by the following techniques FTIR, NMR, high-performance size-exclusion chromatography (HPSEC) and TGA. This complete characterization allowed verifying the capacity of the formosolv process to act on the lignin, causing changes in its structure, which included both phenomena of depolymerization and condensation.This research was funded by MINECO (Spain) in the framework of the projects “Development of processes for the integral use of fast-growing biomass by means of the production of bioethanol and chemical products” with reference CTQ2012-30855 and “Multistage processes for the integral benefit of macroalgal and vegetal biomass” with reference CTM2015-68503-R, by Consellería de Cultura, Educación e Ordenación Universitaria (Xunta de Galicia) through the contract ED431C 2017/62-GRC to Competitive Reference Group BV1, and by the CITACA Strategic Partnership ED431E 2018/07, programs partially funded by European Regional Development Fund (FEDER).info:eu-repo/semantics/publishedVersionMDPIUniversidade do MinhoDomínguez, ElenaRío, Pablo G. delRomani, Aloia PerezGarrote, GilGullón, PatriciaVega, Alberto de2020-08-172020-08-17T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/66747engDomínguez, E.; Río, P.; Romaní, Aloia; Garrote, Gil; Gullón, Patricia; de Vega, Alberto, Formosolv pretreatment to fractionate Paulownia wood following a biorefinery approach: isolation and characterization of the lignin fraction. Agronomy, 10(8), 1205, 20202073-439510.3390/agronomy10081205https://www.mdpi.com/journal/agronomyinfo: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:RCAAP2023-07-21T12:14:59Zoai:repositorium.sdum.uminho.pt:1822/66747Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:07:21.854458Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Formosolv pretreatment to fractionate Paulownia wood following a biorefinery approach: isolation and characterization of the lignin fraction |
title |
Formosolv pretreatment to fractionate Paulownia wood following a biorefinery approach: isolation and characterization of the lignin fraction |
spellingShingle |
Formosolv pretreatment to fractionate Paulownia wood following a biorefinery approach: isolation and characterization of the lignin fraction Domínguez, Elena Organosolv Fractionation Lignin Characterization Paulownia Science & Technology |
title_short |
Formosolv pretreatment to fractionate Paulownia wood following a biorefinery approach: isolation and characterization of the lignin fraction |
title_full |
Formosolv pretreatment to fractionate Paulownia wood following a biorefinery approach: isolation and characterization of the lignin fraction |
title_fullStr |
Formosolv pretreatment to fractionate Paulownia wood following a biorefinery approach: isolation and characterization of the lignin fraction |
title_full_unstemmed |
Formosolv pretreatment to fractionate Paulownia wood following a biorefinery approach: isolation and characterization of the lignin fraction |
title_sort |
Formosolv pretreatment to fractionate Paulownia wood following a biorefinery approach: isolation and characterization of the lignin fraction |
author |
Domínguez, Elena |
author_facet |
Domínguez, Elena Río, Pablo G. del Romani, Aloia Perez Garrote, Gil Gullón, Patricia Vega, Alberto de |
author_role |
author |
author2 |
Río, Pablo G. del Romani, Aloia Perez Garrote, Gil Gullón, Patricia Vega, Alberto de |
author2_role |
author author author author author |
dc.contributor.none.fl_str_mv |
Universidade do Minho |
dc.contributor.author.fl_str_mv |
Domínguez, Elena Río, Pablo G. del Romani, Aloia Perez Garrote, Gil Gullón, Patricia Vega, Alberto de |
dc.subject.por.fl_str_mv |
Organosolv Fractionation Lignin Characterization Paulownia Science & Technology |
topic |
Organosolv Fractionation Lignin Characterization Paulownia Science & Technology |
description |
Paulownia is a rapid-growth tree with a high biomass production rate per year and low demand of water, which make it very suitable for intercropping systems, as it protects the crops from adverse climatic conditions, benefiting the harvest yields. Moreover, these characteristics make Paulownia a suitable raw material able to be fractionated in an integrated biorefinery scheme to obtain multiple products using a cascade conversion approach. Different delignification pretreatments of biomass have been purposed as a first stage of a lignocellulosic biorefinery. In this study, the formosolv delignification of Paulownia wood was investigated using a second order face-centered factorial design to assess the effects of the independent variables (concentrations of formic and hydrochloric acids and reaction time) on the fractionation of Paulownia wood. The maximum delignification achieved in this study (78.5%) was obtained under following conditions: 60 min, and 95% and 0.05% formic and hydrochloric acid, respectively. In addition, the remained solid phases were analyzed to determine their cellulose content and cooking liquors were also chemically analyzed and characterized. Finally, the recovered lignin by precipitation from formosolv liquor and the pristine lignin (milled wood lignin) in Paulownia wood were characterized and compared by the following techniques FTIR, NMR, high-performance size-exclusion chromatography (HPSEC) and TGA. This complete characterization allowed verifying the capacity of the formosolv process to act on the lignin, causing changes in its structure, which included both phenomena of depolymerization and condensation. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-08-17 2020-08-17T00:00:00Z |
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/1822/66747 |
url |
http://hdl.handle.net/1822/66747 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Domínguez, E.; Río, P.; Romaní, Aloia; Garrote, Gil; Gullón, Patricia; de Vega, Alberto, Formosolv pretreatment to fractionate Paulownia wood following a biorefinery approach: isolation and characterization of the lignin fraction. Agronomy, 10(8), 1205, 2020 2073-4395 10.3390/agronomy10081205 https://www.mdpi.com/journal/agronomy |
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.publisher.none.fl_str_mv |
MDPI |
publisher.none.fl_str_mv |
MDPI |
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 |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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