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Lignin syngas bioconversion by Butyribacterium methylotrophicum: advancing towards an integrated biorefinery

2021-11Journal article Open access
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dc.contributor.authorPacheco, Marta
dc.contributor.authorPinto, Filomena
dc.contributor.authorOrtigueira, Joana
dc.contributor.authorSilva, Carla
dc.contributor.authorGírio, Francisco
dc.date.accessioned2021-12-15T12:40:41Z
dc.date.available2021-12-15T12:40:41Z
dc.date.issued2021-11
dc.description.abstractABSTRACT: Hybrid bio-thermochemical based technologies have the potential to ensure greater feedstock flexibility for the production of bioenergy and bioproducts. This study focused on the bioconversion of syngas produced from low grade technical lignin to C-2-/C-4-carboxylic acids by Butyribacterium methylotrophicum. The effects of pH, medium supplementation and the use of crude syngas were analyzed. At pH 6.0, B. methylotrophicum consumed CO, CO2 and H-2 simultaneously up to 87 mol% of carbon fixation, and the supplementation of the medium with acetate increased the production of butyrate by 6.3 times. In long-term bioreactor experiments, B. methylotrophicum produced 38.3 and 51.1 mM acetic acid and 0.7 and 2.0 mM butyric acid from synthetic and lignin syngas, respectively. Carbon fixation reached 83 and 88 mol%, respectively. The lignin syngas conversion rate decreased from 13.3 to 0.9 NmL/h throughout the assay. The appearance of a grayish pellet and cell aggregates after approximately 220 h was indicative of tar deposition. Nevertheless, the stressed cells remained metabolically active and maintained acetate and butyrate production from lignin syngas. The challenge that impurities represent in the bioconversion of crude syngas has a direct impact on syngas cleaning requirements and operation costs, supporting the pursuit for more robust and versatile acetogens.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationPacheco, Marta... [et.al.] - Lignin syngas bioconversion by Butyribacterium methylotrophicum: advancing towards an integrated biorefinery. In: Energies, 2021, Vol. 14 (21), article nº 7124pt_PT
dc.identifier.doi10.3390/en14217124pt_PT
dc.identifier.eissn1996-1073
dc.identifier.urihttp://hdl.handle.net/10400.9/3634
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationDFA/BD/6423/2020pt_PT
dc.relationAdvanced biofuel production with energy system integration
dc.relationFOREVAR - Food Waste Reduction and Valorisation
dc.relation.publisherversionhttps://doi.org/10.3390/en14217124pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectLignocellulosic biomasspt_PT
dc.subjectBiofuelspt_PT
dc.subjectBiorefinerypt_PT
dc.titleLignin syngas bioconversion by Butyribacterium methylotrophicum: advancing towards an integrated biorefinerypt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAdvanced biofuel production with energy system integration
oaire.awardTitleFOREVAR - Food Waste Reduction and Valorisation
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/731263/EU
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/SFRH%2FBD%2F107780%2F2015/PT
oaire.citation.issue21pt_PT
oaire.citation.titleEnergiespt_PT
oaire.citation.volume14pt_PT
oaire.fundingStreamH2020
oaire.fundingStreamOE
person.familyNamePacheco
person.familyNamePinto
person.familyNameOrtigueira
person.familyNamesilva
person.familyNameFERREIRA GIRIO
person.givenNameMarta
person.givenNameFilomena
person.givenNameJoana
person.givenNamecarla
person.givenNameFRANCISCO MANUEL
person.identifier.ciencia-id6D1B-1BBB-8ACF
person.identifier.ciencia-id9611-FC1A-69AE
person.identifier.ciencia-idE611-8996-D1BA
person.identifier.ciencia-idD51D-09A4-A2DC
person.identifier.orcid0000-0003-4039-9127
person.identifier.orcid0000-0002-1014-568X
person.identifier.orcid0000-0003-0170-5312
person.identifier.orcid0000-0002-1439-9214
person.identifier.orcid0000-0002-5376-8430
person.identifier.ridE-5664-2016
person.identifier.ridA-4724-2012
person.identifier.scopus-author-id7102740188
person.identifier.scopus-author-id55355899800
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameEuropean Commission
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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