A influência dos ácidos hexenurônicos no rendimento e na branqueabilidade da polpa kraft

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dc.contributor.authorVentorim, Gustavo [UNESP]
dc.contributor.authorCaraschi, José Cláudio [UNESP]
dc.contributor.authorColodette, Jorge Luiz
dc.contributor.authorGomide, Jose Livio
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Viçosa (UFV)
dc.date.accessioned2014-05-20T13:12:03Z
dc.date.available2014-05-20T13:12:03Z
dc.date.issued2009-01-01
dc.description.abstractThis study investigated the impact of pulp hexenuronic acids (HexAs) content on pulping yield by changing cooking reaction temperature. The bleachability of pulps containing variable amounts of HexAs was also investigated. The cooking at 170 degrees C produced pulp of kappa number, HexAs and screen yield of 16.2, 49.4 mmol/kg and 50.2%, respectively, whereas the cooking at 156 degrees C resulted pulp of kappa 17.0, 61.3 mmol/kg HexAs and 50.8% screened yield. The pulp produced at lower cooking temperature also showed better bleachability as evaluated by the total amount of active chlorine required to achieve 90% ISO. The sequence OAHTD(EP) DD showed the lowest bleaching performance among all.en
dc.description.affiliationUniv Estadual Paulista, Dept Engn Ind Madeireira, BR-18409010 Itapeva, SP, Brazil
dc.description.affiliationUniversidade Federal de Viçosa (UFV), Dept Engn Florestal, BR-36571000 Vicosa, MG, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Engn Ind Madeireira, BR-18409010 Itapeva, SP, Brazil
dc.format.extent373-377
dc.identifierhttp://dx.doi.org/10.1590/S0100-40422009000200019
dc.identifier.citationQuimica Nova. São Paulo: Soc Brasileira Quimica, v. 32, n. 2, p. 373-377, 2009.
dc.identifier.doi10.1590/S0100-40422009000200019
dc.identifier.fileS0100-40422009000200019.pdf
dc.identifier.issn0100-4042
dc.identifier.lattes3238357061477589
dc.identifier.lattes5729302235544407
dc.identifier.scieloS0100-40422009000200019
dc.identifier.urihttp://hdl.handle.net/11449/57
dc.identifier.wosWOS:000265003900019
dc.language.isopor
dc.publisherSoc Brasileira Quimica
dc.relation.ispartofQuímica Nova
dc.relation.ispartofjcr0.646
dc.relation.ispartofsjr0,255
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjecthexenuronic aciden
dc.subjectpulping kraften
dc.subjectECF bleachingen
dc.titleA influência dos ácidos hexenurônicos no rendimento e na branqueabilidade da polpa kraftpt
dc.title.alternativeThe influence of hexenuronic acids in yield and bleachability of pulp kraften
dc.typeArtigo
dcterms.rightsHolderSoc Brasileira Quimica
unesp.author.lattes3238357061477589
unesp.author.lattes5729302235544407
unesp.author.orcid0000-0003-1061-5378[2]
unesp.author.orcid0000-0003-0960-6757[1]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Ciências e Engenharia, Itapevapt

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Artigos - Engenharia Industrial Madeireira - Itapeva