EVALUATION OF EUCALYPTUS KRAFT PULP LIGNIN THROUGH THE NITROBENZENE OXIDATION, COPPER OXIDE REDUCTION AND ACIDOLYSIS TECHNIQUES

Detalhes bibliográficos
Autor(a) principal: Ventorim, Gustavo [UNESP]
Data de Publicação: 2014
Outros Autores: Coelho, Alexandre [UNESP], Colodette, Jorge Luiz, Alves, Ericka Figueiredo, Comelato, Jaqueline Silveira [UNESP]
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.5902/1980509813337
http://hdl.handle.net/11449/117630
Resumo: This study aimed to evaluate the sensitiveness of the information obtained for the residual lignin from Eucalyptus grandis kraft pulps analyzed through the nitrobenzene oxidation, copper oxide (CuO) reduction and acidolysis techniques. The chips were cooked, resulting pulps of kappa number 14,5 and 16,9, respectively. Both lignins' pulps were evaluated through three methods (nitrobenzene oxidation, copper oxide oxidation and acidolysis). Then, they were subjected to an oxygen delignification stage. The 16,9 kappa number pulp resulted in higher levels of non-condensed lignin structures by the acidolysis method, higher syringyl/vanillin ratios (S/V) by the nitrobenzene and copper oxide methods and better performance in the oxygen delignification stage. The different methods allowed to differ the residual lignin pulps with kappa number 14,5 and 16,9, and the nitrobenzene oxidation method showed the highest sensitiveness in this study results.
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spelling EVALUATION OF EUCALYPTUS KRAFT PULP LIGNIN THROUGH THE NITROBENZENE OXIDATION, COPPER OXIDE REDUCTION AND ACIDOLYSIS TECHNIQUESresidual ligninnitrobenzene oxidationacidolysiscopper oxideThis study aimed to evaluate the sensitiveness of the information obtained for the residual lignin from Eucalyptus grandis kraft pulps analyzed through the nitrobenzene oxidation, copper oxide (CuO) reduction and acidolysis techniques. The chips were cooked, resulting pulps of kappa number 14,5 and 16,9, respectively. Both lignins' pulps were evaluated through three methods (nitrobenzene oxidation, copper oxide oxidation and acidolysis). Then, they were subjected to an oxygen delignification stage. The 16,9 kappa number pulp resulted in higher levels of non-condensed lignin structures by the acidolysis method, higher syringyl/vanillin ratios (S/V) by the nitrobenzene and copper oxide methods and better performance in the oxygen delignification stage. The different methods allowed to differ the residual lignin pulps with kappa number 14,5 and 16,9, and the nitrobenzene oxidation method showed the highest sensitiveness in this study results.Univ Estadual Paulista, BR-18409010 Itapeva, SP, BrazilUniv Fed Vicosa, Dept Engn Florestal, BR-3657000 Vicosa, MG, BrazilEmpresa Klabin SA, BR-84269090 Telemaco Borba, PR, BrazilUniv Estadual Paulista, Fac Engn Guaratingueta, BR-12516410 Guaratingueta, SP, BrazilUniv Estadual Paulista, BR-18409010 Itapeva, SP, BrazilUniv Estadual Paulista, Fac Engn Guaratingueta, BR-12516410 Guaratingueta, SP, BrazilCentro Pesquisas Florestais, UfsmUniversidade Estadual Paulista (Unesp)Universidade Federal de Viçosa (UFV)Empresa Klabin SAVentorim, Gustavo [UNESP]Coelho, Alexandre [UNESP]Colodette, Jorge LuizAlves, Ericka FigueiredoComelato, Jaqueline Silveira [UNESP]2015-03-18T15:56:35Z2015-03-18T15:56:35Z2014-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article205-210application/pdfhttp://dx.doi.org/10.5902/1980509813337Ciencia Florestal. Santa Maria: Centro Pesquisas Florestais, Ufsm, v. 24, n. 1, p. 205-210, 2014.0103-9954http://hdl.handle.net/11449/11763010.5902/1980509813337WOS:000339685900020WOS000339685900020.pdf3238357061477589Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPporCiencia Florestal0.4360,420info:eu-repo/semantics/openAccess2023-10-13T06:08:58Zoai:repositorio.unesp.br:11449/117630Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462023-10-13T06:08:58Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv EVALUATION OF EUCALYPTUS KRAFT PULP LIGNIN THROUGH THE NITROBENZENE OXIDATION, COPPER OXIDE REDUCTION AND ACIDOLYSIS TECHNIQUES
title EVALUATION OF EUCALYPTUS KRAFT PULP LIGNIN THROUGH THE NITROBENZENE OXIDATION, COPPER OXIDE REDUCTION AND ACIDOLYSIS TECHNIQUES
spellingShingle EVALUATION OF EUCALYPTUS KRAFT PULP LIGNIN THROUGH THE NITROBENZENE OXIDATION, COPPER OXIDE REDUCTION AND ACIDOLYSIS TECHNIQUES
Ventorim, Gustavo [UNESP]
residual lignin
nitrobenzene oxidation
acidolysis
copper oxide
title_short EVALUATION OF EUCALYPTUS KRAFT PULP LIGNIN THROUGH THE NITROBENZENE OXIDATION, COPPER OXIDE REDUCTION AND ACIDOLYSIS TECHNIQUES
title_full EVALUATION OF EUCALYPTUS KRAFT PULP LIGNIN THROUGH THE NITROBENZENE OXIDATION, COPPER OXIDE REDUCTION AND ACIDOLYSIS TECHNIQUES
title_fullStr EVALUATION OF EUCALYPTUS KRAFT PULP LIGNIN THROUGH THE NITROBENZENE OXIDATION, COPPER OXIDE REDUCTION AND ACIDOLYSIS TECHNIQUES
title_full_unstemmed EVALUATION OF EUCALYPTUS KRAFT PULP LIGNIN THROUGH THE NITROBENZENE OXIDATION, COPPER OXIDE REDUCTION AND ACIDOLYSIS TECHNIQUES
title_sort EVALUATION OF EUCALYPTUS KRAFT PULP LIGNIN THROUGH THE NITROBENZENE OXIDATION, COPPER OXIDE REDUCTION AND ACIDOLYSIS TECHNIQUES
author Ventorim, Gustavo [UNESP]
author_facet Ventorim, Gustavo [UNESP]
Coelho, Alexandre [UNESP]
Colodette, Jorge Luiz
Alves, Ericka Figueiredo
Comelato, Jaqueline Silveira [UNESP]
author_role author
author2 Coelho, Alexandre [UNESP]
Colodette, Jorge Luiz
Alves, Ericka Figueiredo
Comelato, Jaqueline Silveira [UNESP]
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
Universidade Federal de Viçosa (UFV)
Empresa Klabin SA
dc.contributor.author.fl_str_mv Ventorim, Gustavo [UNESP]
Coelho, Alexandre [UNESP]
Colodette, Jorge Luiz
Alves, Ericka Figueiredo
Comelato, Jaqueline Silveira [UNESP]
dc.subject.por.fl_str_mv residual lignin
nitrobenzene oxidation
acidolysis
copper oxide
topic residual lignin
nitrobenzene oxidation
acidolysis
copper oxide
description This study aimed to evaluate the sensitiveness of the information obtained for the residual lignin from Eucalyptus grandis kraft pulps analyzed through the nitrobenzene oxidation, copper oxide (CuO) reduction and acidolysis techniques. The chips were cooked, resulting pulps of kappa number 14,5 and 16,9, respectively. Both lignins' pulps were evaluated through three methods (nitrobenzene oxidation, copper oxide oxidation and acidolysis). Then, they were subjected to an oxygen delignification stage. The 16,9 kappa number pulp resulted in higher levels of non-condensed lignin structures by the acidolysis method, higher syringyl/vanillin ratios (S/V) by the nitrobenzene and copper oxide methods and better performance in the oxygen delignification stage. The different methods allowed to differ the residual lignin pulps with kappa number 14,5 and 16,9, and the nitrobenzene oxidation method showed the highest sensitiveness in this study results.
publishDate 2014
dc.date.none.fl_str_mv 2014-01-01
2015-03-18T15:56:35Z
2015-03-18T15:56:35Z
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://dx.doi.org/10.5902/1980509813337
Ciencia Florestal. Santa Maria: Centro Pesquisas Florestais, Ufsm, v. 24, n. 1, p. 205-210, 2014.
0103-9954
http://hdl.handle.net/11449/117630
10.5902/1980509813337
WOS:000339685900020
WOS000339685900020.pdf
3238357061477589
url http://dx.doi.org/10.5902/1980509813337
http://hdl.handle.net/11449/117630
identifier_str_mv Ciencia Florestal. Santa Maria: Centro Pesquisas Florestais, Ufsm, v. 24, n. 1, p. 205-210, 2014.
0103-9954
10.5902/1980509813337
WOS:000339685900020
WOS000339685900020.pdf
3238357061477589
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv Ciencia Florestal
0.436
0,420
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 205-210
application/pdf
dc.publisher.none.fl_str_mv Centro Pesquisas Florestais, Ufsm
publisher.none.fl_str_mv Centro Pesquisas Florestais, Ufsm
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1797789384119943168

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