Improving production of volatile fatty acids and hydrogen from microalgae and rice residue: effects of physiochemical characteristics and mix ratios

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dc.contributor.author Sun, Chihe
dc.contributor.author Xia, Ao
dc.contributor.author Liao, Qiang
dc.contributor.author Fu, Qian
dc.contributor.author Huang, Yun
dc.contributor.author Zhu, Xun
dc.contributor.author Wei, Pengfei
dc.contributor.author Lin, Richen
dc.contributor.author Murphy, Jerry D.
dc.date.accessioned 2018-10-12T11:34:08Z
dc.date.available 2018-10-12T11:34:08Z
dc.date.issued 2018-09-11
dc.identifier.citation Sun, C., Xia, A., Liao, Q., Fu, Q., Huang, Y., Zhu, X., Wei, P., Lin, R. and Murphy, J. D. (2018) 'Improving production of volatile fatty acids and hydrogen from microalgae and rice residue: Effects of physicochemical characteristics and mix ratios', Applied Energy, 230, pp. 1082-1092. doi: 10.1016/j.apenergy.2018.09.066 en
dc.identifier.volume 230 en
dc.identifier.startpage 1082 en
dc.identifier.endpage 1092 en
dc.identifier.issn 0306-2619
dc.identifier.uri http://hdl.handle.net/10468/7004
dc.identifier.doi 10.1016/j.apenergy.2018.09.066
dc.description.abstract Dark fermentation may be hindered by insufficient bioavailable carbon and nitrogen sources as well as recalcitrant cell wall structures of substrates. Protein-rich microalgae and carbohydrate-rich rice residue with various mix ratios can optimise biohydrogen and volatile fatty acids production. Optimal pretreatment of the microalgae with 1% H2SO4 and the rice residue with 0.5% H2SO4 under hydrothermal heating (140 °C, 10 min) achieved reducing sugar yields of 187.3 mg/g volatile solids (VS) (hydrolysis efficiency: 54%) and 924.9 mg/g VS (hydrolysis efficiency: 100%), respectively. Multiscale physiochemical characterisations of solid hydrolytic residues confirmed considerable damage to both substrates. Co-fermentation of pretreated rice residue and microalgae at a mix ratio of 5:1 exhibited the maximum hydrogen yield of 201.8 mL/g VS, a 10.7-fold increase compared to mono-fermentation of pretreated microalgae. The mix ratio of 25:1 resulted in the highest carbon to volatile fatty acids conversion (96.8%), corresponding to a maximum energy conversion efficiency of 90.8%. en
dc.description.sponsorship National Natural Science Foundation of China (National Science Foundation forYoung Scientists of China (No. 51606021), the InternationalCooperation and Exchange of the National Natural Science Foundationof China (No. 51561145013), the Fundamental Research Funds for theCentral Universities (No. 106112017CDJPT140001), and the Venture &Innovation Support Program for Chongqing Overseas Returnees (No.cx2017019)); en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Elsevier en
dc.relation.uri http://www.sciencedirect.com/science/article/pii/S0306261918313709
dc.rights © 2018 Elsevier Ltd. 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 Microalgae en
dc.subject Rice residue en
dc.subject Pretreatment en
dc.subject Physicochemical characteristics en
dc.subject Mix ratios en
dc.subject Co-fermentation en
dc.title Improving production of volatile fatty acids and hydrogen from microalgae and rice residue: effects of physiochemical characteristics and mix ratios 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 2020-09-11
dc.date.updated 2018-10-12T11:21:49Z
dc.description.version Accepted Version en
dc.internal.rssid 454201283
dc.contributor.funder National Natural Science Foundation of China en
dc.contributor.funder Horizon 2020 en
dc.contributor.funder Science Foundation Ireland en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Applied Energy en
dc.internal.copyrightchecked No !!CORA!! en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress jerry.murphy@ucc.ie 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


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© 2018 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 © 2018 Elsevier Ltd. All rights reserved. This manuscript version is made available under the CC-BY-NC-ND 4.0 license
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