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dc.contributor.authorYuan, Heyangen_US
dc.contributor.authorLu, Yaobinen_US
dc.contributor.authorAbu-Reesh, Ibrahim M.en_US
dc.contributor.authorHe, Zhenen_US
dc.date.accessioned2016-09-07T14:53:28Z
dc.date.available2016-09-07T14:53:28Z
dc.date.issued2015-08-14en_US
dc.identifier.citationBiotechnology for Biofuels. 2015 Aug 14;8(1):116
dc.identifier.issn1754-6834en_US
dc.identifier.urihttp://hdl.handle.net/10919/72893
dc.description.abstractBackground While microbial electrolysis cells (MECs) can simultaneously produce bioelectrochemical hydrogen and treat wastewater, they consume considerable energy to overcome the unfavorable thermodynamics, which is not sustainable and economically feasible in practical applications. This study presents a proof-of-concept system in which hydrogen can be produced in an MEC powered by theoretically predicated energy from pressure-retarded osmosis (PRO). The system consists of a PRO unit that extracts high-quality water and generates electricity from water osmosis, and an MEC for organic removal and hydrogen production. The feasibility of the system was demonstrated using simulated PRO performance (in terms of energy production and effluent quality) and experimental MEC results (e.g., hydrogen production and organic removal). Results The PRO and MEC models were proven to be valid. The model predicted that the PRO unit could produce 485 mL of clean water and 579 J of energy with 600 mL of draw solution (0.8 M of NaCl). The amount of the predicated energy was applied to the MEC by a power supply, which drove the MEC to remove 93.7 % of the organic compounds and produce 32.8 mL of H2 experimentally. Increasing the PRO influent volume and draw concentration could produce more energy for the MEC operation, and correspondingly increase the MEC hydraulic retention time (HRT) and total hydrogen production. The models predicted that at an external voltage of 0.9 V, the MEC energy consumption reached the maximum PRO energy production. With a higher external voltage, the MEC energy consumption would exceed the PRO energy production, leading to negative effects on both organic removal and hydrogen production. Conclusions The PRO-MEC system holds great promise in addressing water-energy nexus through organic removal, hydrogen production, and water recovery: (1) the PRO unit can reduce the volume of wastewater and extract clean water; (2) the PRO effluents can be further treated by the MEC; and (3) the osmotic energy harvested from the PRO unit can be applied to the MEC for sustainable bioelectrochemical hydrogen production.
dc.format.extent? - ? (12) page(s)en_US
dc.format.mimetypeapplication/pdf
dc.languageEnglishen_US
dc.publisherBiomed Central Ltden_US
dc.relation.urihttp://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000359346100001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=930d57c9ac61a043676db62af60056c1en_US
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectTechnologyen_US
dc.subjectBiotechnology & Applied Microbiologyen_US
dc.subjectEnergy & Fuelsen_US
dc.subjectWASTE-WATER TREATMENTen_US
dc.subjectMICROBIAL FUEL-CELLen_US
dc.subjectSUSTAINABLE POWER-GENERATIONen_US
dc.subjectREVERSE-ELECTRODIALYSISen_US
dc.subjectSALINITY GRADIENTSen_US
dc.subjectOSMOSIS MEMBRANESen_US
dc.subjectDESALINATION CELLen_US
dc.subjectENERGY EFFICIENCYen_US
dc.subjectRO-PROen_US
dc.subjectRECOVERYen_US
dc.titleBioelectrochemical production of hydrogen in an innovative pressure-retarded osmosis/microbial electrolysis cell system: experiments and modelingen_US
dc.typeArticle - Refereed
dc.rights.holderYuan et al.en
dc.contributor.departmentCivil and Environmental Engineeringen_US
dc.description.notesPublished (Publication status)en_US
dc.title.serialBIOTECHNOLOGY FOR BIOFUELSen_US
dc.identifier.doihttps://doi.org/10.1186/s13068-015-0305-0
dc.identifier.volume8en_US
dc.type.dcmitypeText
pubs.organisational-group/Virginia Tech
pubs.organisational-group/Virginia Tech/All T&R Faculty
pubs.organisational-group/Virginia Tech/Engineering
pubs.organisational-group/Virginia Tech/Engineering/Civil & Environmental Engineering
pubs.organisational-group/Virginia Tech/Engineering/COE T&R Faculty


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Creative Commons Attribution 4.0 International
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