Modification of the lignin structure of eucalypt feedstocks during chemical deconstruction by kraft, soda-AQ and soda-O2 processing

The modification of the lignin structure in an eucalypt feedstock after alkaline deconstruction by the kraft, soda-AQ and soda-O2 processes was assessed. For this purpose, the residual lignins isolated from the pulps at kappa levels 50, 35, 20 and 15 were analyzed by different analytical techniques,...

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Autores: Prinsen, Pepijn, Gutiérrez Suárez, Ana, Río Andrade, José Carlos del, Berbís, Manuel Álvaro, Jiménez-Barbero, Jesús, Martínez, Ángel T., Liitiä, Tiina, Tamminen, Tarja
Tipo de recurso: otro
Fecha de publicación:2012
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/86336
Acceso en línea:http://hdl.handle.net/10261/86336
Access Level:acceso abierto
Palabra clave:Eucalyptus wood
Lignin
Alkalione decosntruction
Kraft
Soda-anthraquinone
Soda-oxygen
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spelling Modification of the lignin structure of eucalypt feedstocks during chemical deconstruction by kraft, soda-AQ and soda-O2 processingPrinsen, PepijnGutiérrez Suárez, AnaRío Andrade, José Carlos delBerbís, Manuel ÁlvaroJiménez-Barbero, JesúsMartínez, Ángel T.Liitiä, TiinaTamminen, TarjaEucalyptus woodLigninAlkalione decosntructionKraftSoda-anthraquinoneSoda-oxygenThe modification of the lignin structure in an eucalypt feedstock after alkaline deconstruction by the kraft, soda-AQ and soda-O2 processes was assessed. For this purpose, the residual lignins isolated from the pulps at kappa levels 50, 35, 20 and 15 were analyzed by different analytical techniques, including 2D-NMR, 31P-NMR and SEC (size exclusion chromatography). In addition, dissolved lignins precipitated from the black liquors of the kraft and soda-AQ processes at kappa 20 and 15 were also analyzed. The distribution of the different lignin substructures in the residual lignins was similar to that in the native lignin, although with a drastic reduction in their content. This reduction was more evident in pulps with lower kappa number due to the more drastic pulping conditions.The research leading to these results has received funding from the European Community's Seventh Framework Programme FP7/2007-2013 under grant agreement no KBBE-2009-3-244362 LignoDeco (EU/Brazil co-operation). We thank Suzano Papel e Celulose (Brasil) for providing the pulps and the black liquors.Peer reviewedAmerican Chemical Society201320132012info:eu-repo/semantics/otherhttp://purl.org/coar/resource_type/c_3248info:eu-repo/semantics/bookParthttp://hdl.handle.net/10261/86336reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglésinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/863362026-05-22T06:33:51Z
dc.title.none.fl_str_mv Modification of the lignin structure of eucalypt feedstocks during chemical deconstruction by kraft, soda-AQ and soda-O2 processing
title Modification of the lignin structure of eucalypt feedstocks during chemical deconstruction by kraft, soda-AQ and soda-O2 processing
spellingShingle Modification of the lignin structure of eucalypt feedstocks during chemical deconstruction by kraft, soda-AQ and soda-O2 processing
Prinsen, Pepijn
Eucalyptus wood
Lignin
Alkalione decosntruction
Kraft
Soda-anthraquinone
Soda-oxygen
title_short Modification of the lignin structure of eucalypt feedstocks during chemical deconstruction by kraft, soda-AQ and soda-O2 processing
title_full Modification of the lignin structure of eucalypt feedstocks during chemical deconstruction by kraft, soda-AQ and soda-O2 processing
title_fullStr Modification of the lignin structure of eucalypt feedstocks during chemical deconstruction by kraft, soda-AQ and soda-O2 processing
title_full_unstemmed Modification of the lignin structure of eucalypt feedstocks during chemical deconstruction by kraft, soda-AQ and soda-O2 processing
title_sort Modification of the lignin structure of eucalypt feedstocks during chemical deconstruction by kraft, soda-AQ and soda-O2 processing
dc.creator.none.fl_str_mv Prinsen, Pepijn
Gutiérrez Suárez, Ana
Río Andrade, José Carlos del
Berbís, Manuel Álvaro
Jiménez-Barbero, Jesús
Martínez, Ángel T.
Liitiä, Tiina
Tamminen, Tarja
author Prinsen, Pepijn
author_facet Prinsen, Pepijn
Gutiérrez Suárez, Ana
Río Andrade, José Carlos del
Berbís, Manuel Álvaro
Jiménez-Barbero, Jesús
Martínez, Ángel T.
Liitiä, Tiina
Tamminen, Tarja
author_role author
author2 Gutiérrez Suárez, Ana
Río Andrade, José Carlos del
Berbís, Manuel Álvaro
Jiménez-Barbero, Jesús
Martínez, Ángel T.
Liitiä, Tiina
Tamminen, Tarja
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Eucalyptus wood
Lignin
Alkalione decosntruction
Kraft
Soda-anthraquinone
Soda-oxygen
topic Eucalyptus wood
Lignin
Alkalione decosntruction
Kraft
Soda-anthraquinone
Soda-oxygen
description The modification of the lignin structure in an eucalypt feedstock after alkaline deconstruction by the kraft, soda-AQ and soda-O2 processes was assessed. For this purpose, the residual lignins isolated from the pulps at kappa levels 50, 35, 20 and 15 were analyzed by different analytical techniques, including 2D-NMR, 31P-NMR and SEC (size exclusion chromatography). In addition, dissolved lignins precipitated from the black liquors of the kraft and soda-AQ processes at kappa 20 and 15 were also analyzed. The distribution of the different lignin substructures in the residual lignins was similar to that in the native lignin, although with a drastic reduction in their content. This reduction was more evident in pulps with lower kappa number due to the more drastic pulping conditions.
publishDate 2012
dc.date.none.fl_str_mv 2012
2013
2013
dc.type.none.fl_str_mv info:eu-repo/semantics/other
http://purl.org/coar/resource_type/c_3248
dc.type.openaire.fl_str_mv info:eu-repo/semantics/bookPart
format other
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/86336
url http://hdl.handle.net/10261/86336
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
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 15,198674

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