Improving biohydrogen and biomethane co-production via two-stage dark fermentation and anaerobic digestion of the pretreated seaweed Laminaria digitata

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dc.contributor.author Ding, Lingkan
dc.contributor.author Cheng, Jun
dc.contributor.author Lin, Richen
dc.contributor.author Deng, Chen
dc.contributor.author Zhou, Junhu
dc.contributor.author Murphy, Jerry D.
dc.date.accessioned 2020-02-11T13:07:53Z
dc.date.available 2020-02-11T13:07:53Z
dc.date.issued 2019-12-11
dc.identifier.citation Ding, L., Cheng, J., Lin, R., Deng, C., Zhou, J. and Murphy, J. D. (2019) 'Improving biohydrogen and biomethane co-production via two-stage dark fermentation and anaerobic digestion of the pretreated seaweed Laminaria digitata', Journal of Cleaner Production, 251, 119666 (11pp). doi: 10.1016/j.jclepro.2019.119666 en
dc.identifier.volume 251 en
dc.identifier.startpage 1 en
dc.identifier.endpage 11 en
dc.identifier.issn 0959-6526
dc.identifier.uri http://hdl.handle.net/10468/9631
dc.identifier.doi 10.1016/j.jclepro.2019.119666 en
dc.description.abstract The marine macro-alga Laminaria digitata is an abundant brown seaweed, which may be used as a feedstock for gaseous biofuel production via sequential dark fermentation and anaerobic digestion. Various methods, including hydrothermal pretreatment (HTP), hydrothermal dilute acid pretreatment (HTDAP), enzymolysis, and combinations thereof, were employed to depolymerize L. digitata and assess the effects on biohydrogen and biomethane yields. Scanning electron microscopic images revealed that the intact and smooth structure of the seaweed was severely damaged; some micro-pores and debris were generated after HTP (140 °C for 20 min), whilst the undegraded components remained as filamentous structures. The complex carbohydrate polymers in L. digitata constrained the catalytic effects of glucoamylase, leading to limited increase in the yield of carbohydrate monomers. With the aid of H2SO4 (1 v/v%) in HTP, depolymerization of biomass and its further conversion to carbohydrate monomers were significantly improved. The yield of total carbohydrate monomers after HTDAP (0.564 g/gVS) was 3.5-fold that in raw biomass; this led to an increase of 60.8% in biohydrogen yield (57.4 mL/gVS) in the first-stage dark fermentation. However, the generation of byproducts such as hydroxymethylfurfural under such harsh conditions impaired the second-stage anaerobic digestion of hydrogenogenic effluent, resulting in a 25.9% decrease in biomethane yield. HTP was considered the optimum pretreatment improving energy conversion efficiency from seaweed to gaseous biofuels by 26.7% as compared to that of the unpretreated L. digitata. en
dc.description.sponsorship National Key Research and Development Program, China (2016YFE0117900); Zhejiang Provincial Key Research and Development Program, China (2017C04001); Environmental Protection Agency (2018-RE-MS-13); Science Foundation Ireland (16/SP/3829); ERVIA and Gas Networks Ireland (Gas Innovation Group) en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Elsevier Ltd. en
dc.relation.uri http://www.sciencedirect.com/science/article/pii/S0959652619345366
dc.rights © 2019, Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC BY-NC-ND 4.0 license. en
dc.rights.uri https://creativecommons.org/licenses/by-nc-nd/4.0/ en
dc.subject Cascading bioenergy conversion en
dc.subject Dark fermentation en
dc.subject Biohydrogen and biomethane en
dc.subject Hydrothermal pretreatment en
dc.subject Carbohydrate monomer en
dc.title Improving biohydrogen and biomethane co-production via two-stage dark fermentation and anaerobic digestion of the pretreated seaweed Laminaria digitata en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Richen Lin, Eri, University College Cork, Cork, Ireland. +353-21-490-3000 Email: richen.lin@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 2021-12-11
dc.date.updated 2020-02-11T12:33:19Z
dc.description.version Accepted Version en
dc.internal.rssid 502279274
dc.contributor.funder National Key Research and Development Program, China en
dc.contributor.funder Zhejiang Provincial Key Research and Development Program, China en
dc.contributor.funder Horizon 2020 en
dc.contributor.funder Environmental Protection Agency en
dc.contributor.funder Science Foundation Ireland en
dc.contributor.funder Ervia, Ireland en
dc.contributor.funder Gas Networks Ireland en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Journal of Cleaner Production en
dc.internal.copyrightchecked Yes
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress richen.lin@ucc.ie en
dc.identifier.articleid 119666 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
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.identifier.eissn 1879-1786


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© 2019, Elsevier Ltd. 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 © 2019, Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC BY-NC-ND 4.0 license.
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