Hydrogen production with effluent from an ethanol–H2-coproducing fermentation reactor using a single-chamber microbial electrolysis cell

Handle URI:
http://hdl.handle.net/10754/598538
Title:
Hydrogen production with effluent from an ethanol–H2-coproducing fermentation reactor using a single-chamber microbial electrolysis cell
Authors:
Lu, Lu; Ren, Nanqi; Xing, Defeng; Logan, Bruce E.
Abstract:
Hydrogen can be produced by bacterial fermentation of sugars, but substrate conversion to hydrogen is incomplete. Using a single-chamber microbial electrolysis cell (MEC), we show that additional hydrogen can be produced from the effluent of an ethanol-type dark-fermentation reactor. An overall hydrogen recovery of 83 ± 4% was obtained using a buffered effluent (pH 6.7-7.0), with a hydrogen production rate of 1.41 ± 0.08 m3 H2/m3 reactor/d, at an applied voltage of Eap = 0.6 V. When the MEC was combined with the fermentation system, the overall hydrogen recovery was 96%, with a production rate of 2.11 m3 H2/m3/d, corresponding to an electrical energy efficiency of 287%. High cathodic hydrogen recoveries (70 ± 5% to 94 ± 4%) were obtained at applied voltages of 0.5-0.8 V due to shorter cycle times, and repression of methanogen growth through exposure of the cathode to air after each cycle. Addition of a buffer to the fermentation effluent was critical to MEC performance as there was little hydrogen production using unbuffered effluent (0.0372 m3 H2/m3/d at Eap = 0.6 V, pH 4.5-4.6). These results demonstrate that hydrogen yields from fermentation can be substantially increased by using MECs. © 2009 Elsevier B.V. All rights reserved.
Citation:
Lu L, Ren N, Xing D, Logan BE (2009) Hydrogen production with effluent from an ethanol–H2-coproducing fermentation reactor using a single-chamber microbial electrolysis cell. Biosensors and Bioelectronics 24: 3055–3060. Available: http://dx.doi.org/10.1016/j.bios.2009.03.024.
Publisher:
Elsevier BV
Journal:
Biosensors and Bioelectronics
Issue Date:
Jun-2009
DOI:
10.1016/j.bios.2009.03.024
PubMed ID:
19375299
Type:
Article
ISSN:
0956-5663
Sponsors:
This research was supported by the National Natural Science Foundation of China (No. 30870037), National Renewable Energy Laboratory contract RFH-7-77623-01, the Paul L. Bush award administered by the Water Environment Research Foundation, and the KAUST Global Research Partnership.
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Full metadata record

DC FieldValue Language
dc.contributor.authorLu, Luen
dc.contributor.authorRen, Nanqien
dc.contributor.authorXing, Defengen
dc.contributor.authorLogan, Bruce E.en
dc.date.accessioned2016-02-25T13:31:47Zen
dc.date.available2016-02-25T13:31:47Zen
dc.date.issued2009-06en
dc.identifier.citationLu L, Ren N, Xing D, Logan BE (2009) Hydrogen production with effluent from an ethanol–H2-coproducing fermentation reactor using a single-chamber microbial electrolysis cell. Biosensors and Bioelectronics 24: 3055–3060. Available: http://dx.doi.org/10.1016/j.bios.2009.03.024.en
dc.identifier.issn0956-5663en
dc.identifier.pmid19375299en
dc.identifier.doi10.1016/j.bios.2009.03.024en
dc.identifier.urihttp://hdl.handle.net/10754/598538en
dc.description.abstractHydrogen can be produced by bacterial fermentation of sugars, but substrate conversion to hydrogen is incomplete. Using a single-chamber microbial electrolysis cell (MEC), we show that additional hydrogen can be produced from the effluent of an ethanol-type dark-fermentation reactor. An overall hydrogen recovery of 83 ± 4% was obtained using a buffered effluent (pH 6.7-7.0), with a hydrogen production rate of 1.41 ± 0.08 m3 H2/m3 reactor/d, at an applied voltage of Eap = 0.6 V. When the MEC was combined with the fermentation system, the overall hydrogen recovery was 96%, with a production rate of 2.11 m3 H2/m3/d, corresponding to an electrical energy efficiency of 287%. High cathodic hydrogen recoveries (70 ± 5% to 94 ± 4%) were obtained at applied voltages of 0.5-0.8 V due to shorter cycle times, and repression of methanogen growth through exposure of the cathode to air after each cycle. Addition of a buffer to the fermentation effluent was critical to MEC performance as there was little hydrogen production using unbuffered effluent (0.0372 m3 H2/m3/d at Eap = 0.6 V, pH 4.5-4.6). These results demonstrate that hydrogen yields from fermentation can be substantially increased by using MECs. © 2009 Elsevier B.V. All rights reserved.en
dc.description.sponsorshipThis research was supported by the National Natural Science Foundation of China (No. 30870037), National Renewable Energy Laboratory contract RFH-7-77623-01, the Paul L. Bush award administered by the Water Environment Research Foundation, and the KAUST Global Research Partnership.en
dc.publisherElsevier BVen
dc.subjectBiohydrogen productionen
dc.subjectEffluenten
dc.subjectEthanol-type fermentationen
dc.subjectMicrobial electrolysis cell (MEC)en
dc.titleHydrogen production with effluent from an ethanol–H2-coproducing fermentation reactor using a single-chamber microbial electrolysis cellen
dc.typeArticleen
dc.identifier.journalBiosensors and Bioelectronicsen
dc.contributor.institutionHarbin Institute of Technology, Harbin, Chinaen
dc.contributor.institutionPennsylvania State University, State College, United Statesen
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