Kinetics of alkaline delignification of hemp and determination of lignin content by thermogravimetry

Raw hemp (Cannabis sativa L.) was subjected to alkaline delignification with the application of NaOH ranging from [0.125M] to [1M] for times from 5 to 480 min. Lignin contents of the original and delignified samples were determined. The samples were subjected to thermogravimetric analysis (TGA) unde...

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Detalhes bibliográficos
Autores: Mijas, Gabriela, Lis, Manuel José, Pérez-Rentero, Sonia, Riba-Moliner, Marta, Martí, Meritxell, Cayuela, Diana, Manich, Albert M.
Formato: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2022
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/310863
Acesso em linha:http://hdl.handle.net/10261/310863
https://api.elsevier.com/content/abstract/scopus_id/85129657254
Access Level:acceso abierto
Palavra-chave:Thermogravimetric analysis (TGA)
alkaline treatment
Hemp fiber
Kinetics
Lignin content
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spelling Kinetics of alkaline delignification of hemp and determination of lignin content by thermogravimetryMijas, GabrielaLis, Manuel JoséPérez-Rentero, SoniaRiba-Moliner, MartaMartí, MeritxellCayuela, DianaManich, Albert M.Thermogravimetric analysis (TGA)alkaline treatmentHemp fiberKineticsLignin contentRaw hemp (Cannabis sativa L.) was subjected to alkaline delignification with the application of NaOH ranging from [0.125M] to [1M] for times from 5 to 480 min. Lignin contents of the original and delignified samples were determined. The samples were subjected to thermogravimetric analysis (TGA) under a N2 atmosphere with temperatures ramped from 25 to 600 °C at 10 °C min-1. Lignosulfonates samples of low, medium and high molecular weight were subjected to the same TGA and showed that lignin decomposed over the entire temperature range. The contributions of lignin to the mass loss during thermal decomposition of hemp and kinetics of lignin content and the most relevant TGA results were determined. Regression models estimating the lignin content of the fibers based on TGA results were formulated. These models allow for the prediction of mean lignin content within ± 0.1% (based on dry weight of pulp) in the central range of the experimental field.Authors gratefully acknowledge the financial support for this research from the Ministry of Science and Innovation of Spain (Project MAT2016-79352-R) and from the National Secretary of Higher Education, Science, Technology and Innovation of Ecuador (SENESCYT) for Doctoral’s Fellowship (No. CZ02-000926-2018).Peer reviewedTaylor & Francis0000-0002-4688-71750000-0002-2026-085X0000-0002-7732-45430000-0003-0001-20550000-0002-1048-83400000-0002-9835-2850Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202320232022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Postprintinfo:eu-repo/semantics/acceptedVersionhttp://hdl.handle.net/10261/310863https://api.elsevier.com/content/abstract/scopus_id/85129657254reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)InglésJournal of Wood Chemistry and Technologyhttps://doi.org/10.1080/02773813.2022.2067562Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/3108632026-05-22T06:33:51Z
dc.title.none.fl_str_mv Kinetics of alkaline delignification of hemp and determination of lignin content by thermogravimetry
title Kinetics of alkaline delignification of hemp and determination of lignin content by thermogravimetry
spellingShingle Kinetics of alkaline delignification of hemp and determination of lignin content by thermogravimetry
Mijas, Gabriela
Thermogravimetric analysis (TGA)
alkaline treatment
Hemp fiber
Kinetics
Lignin content
title_short Kinetics of alkaline delignification of hemp and determination of lignin content by thermogravimetry
title_full Kinetics of alkaline delignification of hemp and determination of lignin content by thermogravimetry
title_fullStr Kinetics of alkaline delignification of hemp and determination of lignin content by thermogravimetry
title_full_unstemmed Kinetics of alkaline delignification of hemp and determination of lignin content by thermogravimetry
title_sort Kinetics of alkaline delignification of hemp and determination of lignin content by thermogravimetry
dc.creator.none.fl_str_mv Mijas, Gabriela
Lis, Manuel José
Pérez-Rentero, Sonia
Riba-Moliner, Marta
Martí, Meritxell
Cayuela, Diana
Manich, Albert M.
author Mijas, Gabriela
author_facet Mijas, Gabriela
Lis, Manuel José
Pérez-Rentero, Sonia
Riba-Moliner, Marta
Martí, Meritxell
Cayuela, Diana
Manich, Albert M.
author_role author
author2 Lis, Manuel José
Pérez-Rentero, Sonia
Riba-Moliner, Marta
Martí, Meritxell
Cayuela, Diana
Manich, Albert M.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv 0000-0002-4688-7175
0000-0002-2026-085X
0000-0002-7732-4543
0000-0003-0001-2055
0000-0002-1048-8340
0000-0002-9835-2850
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Thermogravimetric analysis (TGA)
alkaline treatment
Hemp fiber
Kinetics
Lignin content
topic Thermogravimetric analysis (TGA)
alkaline treatment
Hemp fiber
Kinetics
Lignin content
description Raw hemp (Cannabis sativa L.) was subjected to alkaline delignification with the application of NaOH ranging from [0.125M] to [1M] for times from 5 to 480 min. Lignin contents of the original and delignified samples were determined. The samples were subjected to thermogravimetric analysis (TGA) under a N2 atmosphere with temperatures ramped from 25 to 600 °C at 10 °C min-1. Lignosulfonates samples of low, medium and high molecular weight were subjected to the same TGA and showed that lignin decomposed over the entire temperature range. The contributions of lignin to the mass loss during thermal decomposition of hemp and kinetics of lignin content and the most relevant TGA results were determined. Regression models estimating the lignin content of the fibers based on TGA results were formulated. These models allow for the prediction of mean lignin content within ± 0.1% (based on dry weight of pulp) in the central range of the experimental field.
publishDate 2022
dc.date.none.fl_str_mv 2022
2023
2023
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Postprint
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/310863
https://api.elsevier.com/content/abstract/scopus_id/85129657254
url http://hdl.handle.net/10261/310863
https://api.elsevier.com/content/abstract/scopus_id/85129657254
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Journal of Wood Chemistry and Technology
https://doi.org/10.1080/02773813.2022.2067562
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Taylor & Francis
publisher.none.fl_str_mv Taylor & Francis
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,812429

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