EVALUATION OF EUCALYPTUS KRAFT PULP LIGNIN THROUGH THE NITROBENZENE OXIDATION, COPPER OXIDE REDUCTION AND ACIDOLYSIS TECHNIQUES
Autor(a) principal: | |
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Data de Publicação: | 2014 |
Outros Autores: | , , , |
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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Repositório Institucional da UNESP |
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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_ |
1799964548358209536 |