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An integrated process to produce vanillin and lignin-based polyurethanes from Kraft lignin

2009Journal article Restricted access
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dc.contributor.authorSilva, Eduardo A.B.
dc.contributor.authorZabkova, Miriam
dc.contributor.authorAraújo, José D.
dc.contributor.authorCateto, Carolina
dc.contributor.authorBarreiro, M.F.
dc.contributor.authorBelgacem, Mohamed Naceur
dc.contributor.authorRodrigues, Alírio
dc.date.accessioned2010-01-23T16:56:20Z
dc.date.available2010-01-23T16:56:20Z
dc.date.issued2009
dc.description.abstractThe aim of this manuscript is to present an integrated process that includes reaction and separation steps for producing vanillin and lignin-based polyurethanes from Kraft lignin. It provides details about lignin oxidation and subsequent vanillin recovery, as well as, the synthesis of lignin-based polyurethanes. The oxidation of Kraft lignin in alkaline medium has been carried out in a batch reactor and the optimum operational conditions for vanillin production obtained. The feasibility of a continuous process for vanillin production has been analyzed using a structured bubble column reactor. The generated reaction stream (degraded lignin and sodium vanillate) was further subjected to an ultrafiltration process to recover the vanillate. An ion-exchange process allows recovering the vanillin by passing the vanillate solution through a column packed with an ion-exchange resin in H+ form. The remaining lignin can act as a raw material to produce polyurethanes and/or biofuels. In this work the first approach was explored.pt
dc.description.sponsorshipProjects POCTI/EQU/33198/99, POCI/EQU/ 61738/2004, CYTED IV.17/2002-2006 and ACÇÃO LUSOFRANCESA F13/06pt
dc.identifier.citationSilva, E.A.B. da; Zabkova, M.; Araújo, J.D.; Cateto, C.A.; Barreiro, M.F.; Belgacem, M.N.; Rodrigues, A.E. (2009). An integrated process to produce vanillin and lignin-based polyurethanes from Kraft lignin. Chemical Engineering Research and Design. ISSN 0263-8762. 87:9, p. 1276-1292pt
dc.identifier.doi10.1016/j.cherd.2009.05.008
dc.identifier.issn0263-8762
dc.identifier.urihttp://hdl.handle.net/10198/1413
dc.language.isoengpt
dc.publisherElsevierpt
dc.subjectKraft ligninpt
dc.subjectVanillinpt
dc.subjectPolyurethanespt
dc.subjectOxidationpt
dc.subjectUltrafiltrationpt
dc.subjectIntegrated processpt
dc.titleAn integrated process to produce vanillin and lignin-based polyurethanes from Kraft ligninpt
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage1292pt
oaire.citation.startPage1276pt
oaire.citation.titleChemical Engineering Research and Designpt
person.familyNameBarreiro
person.givenNameFilomena
person.identifier.ciencia-id3418-47D5-5746
person.identifier.orcid0000-0002-6844-333X
person.identifier.ridL-9802-2014
person.identifier.scopus-author-id57188719717
rcaap.rightsrestrictedAccesspt
rcaap.typearticlept
relation.isAuthorOfPublication0391987c-ba90-488b-839a-153447ce1f0f
relation.isAuthorOfPublication.latestForDiscovery0391987c-ba90-488b-839a-153447ce1f0f

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