Boosting biomethane yield and production rate with graphene: the potential of direct interspecies electron transfer in anaerobic digestion

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dc.contributor.authorLin, Richen
dc.contributor.authorCheng, Jun
dc.contributor.authorZhang, Jiabei
dc.contributor.authorZhou, Junhu
dc.contributor.authorCen, Kefa
dc.contributor.authorMurphy, Jerry D.
dc.contributor.funderNational Natural Science Foundation of Chinaen
dc.contributor.funderNatural Science Foundation of Zhejiang Provinceen
dc.contributor.funderScience Foundation Irelanden
dc.contributor.funderGas Networks Irelanden
dc.date.accessioned2017-06-08T09:10:59Z
dc.date.available2017-06-08T09:10:59Z
dc.date.issued2017-05-05
dc.date.updated2017-06-08T08:56:56Z
dc.description.abstractInterspecies electron transfer between bacteria and archaea plays a vital role in enhancing energy efficiency of anaerobic digestion (AD). Conductive carbon materials (i.e. graphene nanomaterial and activated charcoal) were assessed to enhance AD of ethanol (a key intermediate product after acidogenesis of algae). The addition of graphene (1.0 g/L) resulted in the highest biomethane yield (695.0 ± 9.1 mL/g) and production rate (95.7 ± 7.6 mL/g/d), corresponding to an enhancement of 25.0% in biomethane yield and 19.5% in production rate. The ethanol degradation constant was accordingly improved by 29.1% in the presence of graphene. Microbial analyses revealed that electrogenic bacteria of Geobacter and Pseudomonas along with archaea Methanobacterium and Methanospirillum might participate in direct interspecies electron transfer (DIET). Theoretical calculations provided evidence that graphene-based DIET can sustained a much higher electron transfer flux than conventional hydrogen transfer.en
dc.description.sponsorshipNational Natural Science Foundation, China (National key research and development program, China (Collaborative Chinese Irish study (2016YFE0117900), (51676171)); Zhejiang Provincial Key Research and Development Program, China (2017C04001); Science Foundation Ireland (SFI through the Centre for Marine and Renewable Energy (MaREI) under Grant No. 12/RC/2302); Gas Networks Ireland (GNI through the Gas Innovation Group, and by ERVIA)en
dc.description.statusPeer revieweden
dc.description.versionAccepted Versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationLin, R., Cheng, J., Zhang, J., Zhou, J., Cen, K. and Murphy, J. D. (2017) 'Boosting biomethane yield and production rate with graphene: The potential of direct interspecies electron transfer in anaerobic digestion', Bioresource Technology, 239, pp. 345-352. doi:10.1016/j.biortech.2017.05.017en
dc.identifier.doi10.1016/j.biortech.2017.05.017
dc.identifier.endpage352en
dc.identifier.issn0960-8524
dc.identifier.journaltitleBioresource Technologyen
dc.identifier.startpage345en
dc.identifier.urihttps://hdl.handle.net/10468/4060
dc.identifier.volume239en
dc.language.isoenen
dc.publisherElsevieren
dc.rights© 2017 Published by Elsevier Ltd. This manuscript version is made available under the CC-BY-NC-ND 4.0 licenseen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en
dc.subjectGrapheneen
dc.subjectActivated charcoalen
dc.subjectEthanolen
dc.subjectDirect interspecies electron transferen
dc.subjectAnaerobic digestionen
dc.titleBoosting biomethane yield and production rate with graphene: the potential of direct interspecies electron transfer in anaerobic digestionen
dc.typeArticle (peer-reviewed)en
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