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Pretreatment of cotton spinning residues for optimal enzymatic hydrolysis: a case study using green solvents

2020Artigo científico Acesso aberto
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dc.contributor.authorFockink, Douglas, H.
dc.contributor.authorAndreaus, Jurgen
dc.contributor.authorRamos, Luiz Pereira
dc.contributor.authorLukasik, Rafal M.
dc.date.accessioned2020-06-23T15:03:08Z
dc.date.available2020-06-23T15:03:08Z
dc.date.issued2020
dc.description.abstractABSTRACT: The effectiveness of imidazole and ionic liquid pretreatments for the conversion of cotton spinning residues (dirty cotton residue - DCR and cotton filter powder - CFP) into soluble sugars was investigated. DCR was pretreated with imidazole using temperatures and reaction times that were arranged in a 2(2) factorial design and pretreatment performance was evaluated by enzymatic hydrolysis. High glucan to glucose and xylan to xylose yields (78.0 and 94.9 mol %) were obtained from the solids produced at 140 degrees C and 2h (center point), which provided delignification levels of 45.5% (w.v(-1)). The same pretreatment condition was applied to CFP yielding only 16.0% (w.v(-1)) of delignification, but 75.8 mol % of glucan and 95.7 mol % of xylan were converted as their corresponding monomeric sugars after enzymatic hydrolysis. Both pretreated materials were subjected to a central composite design to find the best enzymatic hydrolysis conditions regarding substrate total solids (TS) and enzyme loading. More than 40 g.L-1 glucose was obtained from both pretreated materials at 13.7% w.w(-1) TS and 20 FPU.g(-1) glucan after 96 h of hydrolysis. Ionic liquid pretreatment of the same cotton spinning residues showed moderate delignification levels, accompanied by a change in biomass crystallinity from cellulose 1 beta to cellulose II. This turned to be very important to improve enzymatic hydrolysis yields. Therefore, biomass delignification and crystallinity confirmed to be key factors governing the enzymatic saccharification of cotton spinning residues.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationFockink, Douglas H... [et.al.] - Pretreatment of cotton spinning residues for optimal enzymatic hydrolysis: a case study using green solvents. In: Renewable Energy, 2020, Vol. 145, p. 490-499pt_PT
dc.identifier.doi10.1016/j.renene.2019.06.042pt_PT
dc.identifier.issn0960-1481
dc.identifier.urihttp://hdl.handle.net/10400.9/3285
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationFCT/IF/00471/2015pt_PT
dc.relationFCT/ROTEIRO/0189/2013pt_PT
dc.relationFCT/1909/27/2/2014/Spt_PT
dc.relationCAPES/371/14pt_PT
dc.relationCAPES/0005/2015pt_PT
dc.relationCAPES/23038.002463/2014-98pt_PT
dc.relationCNPq/551404/2010-8pt_PT
dc.relationCNPq/311554/2011-3pt_PT
dc.relationCNPq/313458/2017-0pt_PT
dc.relation.publisherversionhttps://doi.org/10.1016/j.renene.2019.06.042pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectBiomass wastespt_PT
dc.subjectWaste valorizationpt_PT
dc.subjectLignocellulosic biomasspt_PT
dc.subjectIonic liquidspt_PT
dc.subjectEnzymatic hydrolysispt_PT
dc.subjectPretreatmentspt_PT
dc.subjectBioethanolpt_PT
dc.subjectGreen chemistrypt_PT
dc.titlePretreatment of cotton spinning residues for optimal enzymatic hydrolysis: a case study using green solventspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage499pt_PT
oaire.citation.startPage490pt_PT
oaire.citation.titleRenewable Energypt_PT
oaire.citation.volume145pt_PT
person.familyNameLukasik
person.givenNameRafal
person.identifier.orcid0000-0002-7805-5744
person.identifier.ridA-6315-2011
person.identifier.scopus-author-id6506737268
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication6a7fdbd9-7961-407e-88d0-15d175ea711d
relation.isAuthorOfPublication.latestForDiscovery6a7fdbd9-7961-407e-88d0-15d175ea711d

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