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

dc.contributorUniversidade Estadual Paulista (UNESP)
dc.creatorVentorim, Gustavo
dc.creatorCoelho, Alexandre
dc.creatorColodette, Jorge Luiz
dc.creatorAlves, Ericka Figueiredo
dc.creatorComelato, Jaqueline Silveira
dc.date2015-03-18T15:56:35Z
dc.date2016-10-25T20:35:49Z
dc.date2015-03-18T15:56:35Z
dc.date2016-10-25T20:35:49Z
dc.date2014-01-01
dc.date.accessioned2017-04-06T07:19:43Z
dc.date.available2017-04-06T07:19:43Z
dc.identifierCiencia Florestal. Santa Maria: Centro Pesquisas Florestais, Ufsm, v. 24, n. 1, p. 205-210, 2014.
dc.identifier0103-9954
dc.identifierhttp://hdl.handle.net/11449/117630
dc.identifierhttp://acervodigital.unesp.br/handle/11449/117630
dc.identifier10.5902/1980509813337
dc.identifierWOS:000339685900020
dc.identifierWOS000339685900020.pdf
dc.identifierhttp://dx.doi.org/10.5902/1980509813337
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/928277
dc.descriptionThis 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.
dc.languagepor
dc.publisherCentro Pesquisas Florestais, Ufsm
dc.relationCiencia Florestal
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectresidual lignin
dc.subjectnitrobenzene oxidation
dc.subjectacidolysis
dc.subjectcopper oxide
dc.titleEVALUATION OF EUCALYPTUS KRAFT PULP LIGNIN THROUGH THE NITROBENZENE OXIDATION, COPPER OXIDE REDUCTION AND ACIDOLYSIS TECHNIQUES
dc.typeOtro


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