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The effect of the chemical character of ionic liquids on biomass pre-treatment and posterior enzymatic hydrolysis

2019Journal article Open access
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dc.contributor.authorBernardo, Joana
dc.contributor.authorGírio, Francisco
dc.contributor.authorLukasik, Rafal M.
dc.date.accessioned2020-03-30T16:28:11Z
dc.date.available2020-03-30T16:28:11Z
dc.date.issued2019
dc.description.abstractABSTRACT: Ionic liquids have been recognised as interesting solvents applicable in efficient lignocellulosic biomass valorisation, especially in biomass fractionation into individual polymeric components or direct hydrolysis of some biomass fractions. Considering the chemical character of ionic liquids, two different approaches paved the way for the fractionation of biomass. The first strategy integrated a pre-treatment, hydrolysis and conversion of biomass through the employment of hydrogen-bond acidic 1-ethyl-3-methyimidazolim hydrogen sulphate ionic liquid. The second strategy relied on the use of a three-step fractionation process with hydrogen-bond basic 1-ethyl-3-methylimidazolium acetate to produce high purity cellulose, hemicellulose and lignin fractions. The proposed approaches were scrutinised for wheat straw and eucalyptus residues. These different biomasses enabled an understanding that enzymatic hydrolysis yields are dependent on the crystallinity of the pre-treated biomass. The use of acetate based ionic liquid allowed crystalline cellulose I to change to cellulose II and consequently enhanced the glucan to glucose yield to 93.1 +/- 4.1 mol% and 82.9 +/- 1.2 mol% for wheat straw and eucalyptus, respectively. However, for hydrogen sulphate ionic liquid, the same enzymatic hydrolysis yields were 61.6 +/- 0.2 mol% for wheat straw and only 7.9 +/- 0.3 mol% for eucalyptus residues. These results demonstrate the importance of both ionic liquid character and biomass type for efficient biomass processing.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBernardo, Joana R... [et.al.] - The effect of the chemical character of ionic liquids on biomass pre-treatment and posterior enzymatic hydrolysis. In: Molecules, 2019, Vol. 24(4), article nº 808pt_PT
dc.identifier.doi10.3390/molecules24040808pt_PT
dc.identifier.issn1420-3049
dc.identifier.urihttp://hdl.handle.net/10400.9/3217
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationROTEIRO/0189/2013pt_PT
dc.relationAdvanced biofuel production with energy system integration
dc.relation.publisherversionhttps://doi.org/10.3390/molecules24040808pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectBiomasspt_PT
dc.subjectValorisationpt_PT
dc.subjectIonic liquidspt_PT
dc.subjectEnzymatic hydrolysispt_PT
dc.subjectPretreatmentspt_PT
dc.titleThe effect of the chemical character of ionic liquids on biomass pre-treatment and posterior enzymatic hydrolysispt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAdvanced biofuel production with energy system integration
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/731263/EU
oaire.citation.titleMoleculespt_PT
oaire.citation.volume24pt_PT
oaire.fundingStreamH2020
person.familyNameBernardo
person.familyNameFERREIRA GIRIO
person.familyNameLukasik
person.givenNameJoana
person.givenNameFRANCISCO MANUEL
person.givenNameRafal
person.identifier.ciencia-idDF10-86D1-697B
person.identifier.ciencia-idD51D-09A4-A2DC
person.identifier.orcid0000-0001-5311-419X
person.identifier.orcid0000-0002-5376-8430
person.identifier.orcid0000-0002-7805-5744
person.identifier.ridA-5651-2018
person.identifier.ridA-6315-2011
person.identifier.scopus-author-id56978988100
person.identifier.scopus-author-id6506737268
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicatione12a90b9-b7fb-4018-a563-b9349c3e7e1d
relation.isAuthorOfPublication781a0b63-529e-4c34-8dcc-fd27e785e762
relation.isAuthorOfPublication6a7fdbd9-7961-407e-88d0-15d175ea711d
relation.isAuthorOfPublication.latestForDiscovery6a7fdbd9-7961-407e-88d0-15d175ea711d
relation.isProjectOfPublication5927b9ce-a8c9-46e5-9ef0-f5ffb7b16b80
relation.isProjectOfPublication.latestForDiscovery5927b9ce-a8c9-46e5-9ef0-f5ffb7b16b80

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