Improved efficiency of anaerobic digestion through direct interspecies electron transfer at mesophilic and thermophilic temperature ranges

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dc.contributor.author Lin, Richen
dc.contributor.author Cheng, Jun
dc.contributor.author Ding, Lingkan
dc.contributor.author Murphy, Jerry D.
dc.date.accessioned 2018-06-06T14:07:17Z
dc.date.available 2018-06-06T14:07:17Z
dc.date.issued 2018-05-30
dc.identifier.citation Lin, R., Cheng, J., Ding, L. and Murphy, J. D. (2018) 'Improved efficiency of anaerobic digestion through direct interspecies electron transfer at mesophilic and thermophilic temperature ranges', Chemical Engineering Journal, In Press, doi: 10.1016/j.cej.2018.05.173 en
dc.identifier.startpage 1 en
dc.identifier.endpage 55 en
dc.identifier.issn 1385-8947
dc.identifier.uri http://hdl.handle.net/10468/6254
dc.identifier.doi 10.1016/j.cej.2018.05.173
dc.description.abstract Direct interspecies electron transfer (DIET) in microbial communities plays a significant role in improving efficiency of biomethane production from anaerobic digestion. In this study, the impacts of conductive graphene on mesophilic and thermophilic anaerobic digestion (MAD and TAD) were comparatively assessed using the model substrate ethanol. The maximum electron transfer flux for graphene-based DIET was calculated at mesophilic and thermophilic temperatures (35 °C and 55 °C). Biomethane potential results showed that the addition of graphene (1.0 g/L) significantly enhanced biomethane production rates by 25.0% in MAD and 26.4% in TAD. The increased biomethane production was accompanied with enhanced ethanol degradation. The theoretical calculation for maximum DIET flux showed that graphene-based DIET in MAD (76.4 mA) and TAD (75.1 mA) were at the same level, which suggests temperature might not be a significant factor affecting DIET. This slight difference was ascribed to the different Gibbs free energy changes of the overall DIET reaction (CH3CH2OH + 1/2CO2 → 1/2CH4 + CH3COO- + 5H+) in MAD and TAD. Microbial analysis revealed that the dominant microbes in response to graphene addition were distinctly different between MAD and TAD. The results indicated that the bacteria of Levilinea dominated in MAD, while Coprothermobacter dominated in TAD. The abundance of archaeal Methanobacterium decreased, while Methanosaeta increased with increasing temperature. en
dc.description.sponsorship Ministry of Science and Technology of the People's Republic of China (National key research and development program-China (2016YFE0117900)); Natural Science Foundation of Zhejiang Province (Zhejiang Provincial key research and development program-China (2017C04001)); Gas Networks Ireland, GNI (co-funded by ERVIA and Gas Networks Ireland (GNI) through the Gas Innovation Group); en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Elsevier en
dc.relation.uri https://www.sciencedirect.com/science/article/pii/S1385894718309975
dc.rights © 2018 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license. en
dc.rights.uri http://creativecommons.org/licenses/by-nc-nd/4.0/ en
dc.subject Graphene en
dc.subject Ethanol en
dc.subject Mesophilic / thermophilic digestion en
dc.subject Interspecies electron transfer en
dc.title Improved efficiency of anaerobic digestion through direct interspecies electron transfer at mesophilic and thermophilic temperature ranges en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Jeremiah D.G. Murphy, Civil Engineering, University College Cork, Cork, Ireland. +353-21-490-3000 Email: jerry.murphy@ucc.ie en
dc.internal.availability Full text available en
dc.check.info Access to this article is restricted until 24 months after publication by request of the publisher. en
dc.check.date 2020-05-30
dc.date.updated 2018-06-06T13:53:09Z
dc.description.version Accepted Version en
dc.internal.rssid 440524972
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder Ministry of Science and Technology of the People's Republic of China en
dc.contributor.funder Natural Science Foundation of Zhejiang Province en
dc.contributor.funder Horizon 2020 en
dc.contributor.funder Gas Networks Ireland en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Chemical Engineering Journal en
dc.internal.copyrightchecked No !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress Jerry.Murphy@ucc.ie en
dc.internal.bibliocheck In Press June 2018. Update citation, add vol, issue, update start page end page en
dc.relation.project info:eu-repo/grantAgreement/SFI/SFI Research Centres Supplement/12/RC/2302s/IE/Marine Renewable Energy Ireland (MaREI) - EU Grant Manager/ en
dc.relation.project info:eu-repo/grantAgreement/SFI/SFI Research Centres/12/RC/2302/IE/Marine Renewable Energy Ireland (MaREI) - The SFI Centre for Marine Renewable Energy Research/ en
dc.relation.project info:eu-repo/grantAgreement/EC/H2020::MSCA-IF-EF-ST/797259/EU/Direct Interspecies Electron Transfer in advanced anaerobic digestion system for gaseous transport biofuel production/DIET en


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© 2018 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license. Except where otherwise noted, this item's license is described as © 2018 Elsevier B.V. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license.
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