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Article: Porous anodes with helical flow pathways in bioelectrochemical systems: The effects of fluid dynamics and operating regimes
Title | Porous anodes with helical flow pathways in bioelectrochemical systems: The effects of fluid dynamics and operating regimes |
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Authors | |
Keywords | Flow induced mass transfer Microbial fuel cell (MFC) Carbon foam Micro-porous carbon Bioelectrochemical system (BES) Helical electrode |
Issue Date | 2012 |
Citation | Journal of Power Sources, 2012, v. 213, p. 382-390 How to Cite? |
Abstract | Bioelectrochemical systems (BES) and/or microbial fuel cell (MFC) mass transport and associated over-potential limitations are affected by flow regimes, which may simultaneously increase the power and pollution treatment capacities. Two electrodes with helical flow channels were compared in the same tubular MFC reactor. 1). A machined monolithic microporous conductive carbon (MMCC). 2). A layered carbon veil with spoked ABS former (LVSF); both presented helical flow channel. Anode performances were compared when subject to temperature, substrate concentration and flow rate variations. The MMCC maximum power increased from 2.9 ± 0.3 to 7.6 ± 0.7 mW with influent acetate concentration, from 1 to 10 mM (with 2 mL min-1), but decreased power to 5.5 ± 0.5 mW at 40 mM, implicated localized pH/buffering. Flow rate (0.1 to 7.5 mL min-1) effects were relatively small but an increase was evident from batch to continuous operation at 0.1 mL min-1. The LVSF configuration showed improved performance in power as the flow rate increased, indicating that flow pattern affects BES performance. Computational fluid dynamics (CFD) modelling showed less uniform flow with the LVSF. Thus flow regime driven mass transfer improves the power output in continuously fed system operation. These results indicate that electrode configuration, flow regime and operating condition need consideration to optimize the bioelectrochemical reaction. © 2012 Elsevier B.V. All rights reserved. |
Persistent Identifier | http://hdl.handle.net/10722/262948 |
ISSN | 2023 Impact Factor: 8.1 2023 SCImago Journal Rankings: 1.857 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Kim, Jung Rae | - |
dc.contributor.author | Boghani, Hitesh C. | - |
dc.contributor.author | Amini, Negar | - |
dc.contributor.author | Aguey-Zinsou, Kondo François | - |
dc.contributor.author | Michie, Iain | - |
dc.contributor.author | Dinsdale, Richard M. | - |
dc.contributor.author | Guwy, Alan J. | - |
dc.contributor.author | Guo, Zheng Xiao | - |
dc.contributor.author | Premier, Giuliano C. | - |
dc.date.accessioned | 2018-10-08T09:28:54Z | - |
dc.date.available | 2018-10-08T09:28:54Z | - |
dc.date.issued | 2012 | - |
dc.identifier.citation | Journal of Power Sources, 2012, v. 213, p. 382-390 | - |
dc.identifier.issn | 0378-7753 | - |
dc.identifier.uri | http://hdl.handle.net/10722/262948 | - |
dc.description.abstract | Bioelectrochemical systems (BES) and/or microbial fuel cell (MFC) mass transport and associated over-potential limitations are affected by flow regimes, which may simultaneously increase the power and pollution treatment capacities. Two electrodes with helical flow channels were compared in the same tubular MFC reactor. 1). A machined monolithic microporous conductive carbon (MMCC). 2). A layered carbon veil with spoked ABS former (LVSF); both presented helical flow channel. Anode performances were compared when subject to temperature, substrate concentration and flow rate variations. The MMCC maximum power increased from 2.9 ± 0.3 to 7.6 ± 0.7 mW with influent acetate concentration, from 1 to 10 mM (with 2 mL min-1), but decreased power to 5.5 ± 0.5 mW at 40 mM, implicated localized pH/buffering. Flow rate (0.1 to 7.5 mL min-1) effects were relatively small but an increase was evident from batch to continuous operation at 0.1 mL min-1. The LVSF configuration showed improved performance in power as the flow rate increased, indicating that flow pattern affects BES performance. Computational fluid dynamics (CFD) modelling showed less uniform flow with the LVSF. Thus flow regime driven mass transfer improves the power output in continuously fed system operation. These results indicate that electrode configuration, flow regime and operating condition need consideration to optimize the bioelectrochemical reaction. © 2012 Elsevier B.V. All rights reserved. | - |
dc.language | eng | - |
dc.relation.ispartof | Journal of Power Sources | - |
dc.rights | This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. | - |
dc.subject | Flow induced mass transfer | - |
dc.subject | Microbial fuel cell (MFC) | - |
dc.subject | Carbon foam | - |
dc.subject | Micro-porous carbon | - |
dc.subject | Bioelectrochemical system (BES) | - |
dc.subject | Helical electrode | - |
dc.title | Porous anodes with helical flow pathways in bioelectrochemical systems: The effects of fluid dynamics and operating regimes | - |
dc.type | Article | - |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1016/j.jpowsour.2012.03.040 | - |
dc.identifier.scopus | eid_2-s2.0-84861204891 | - |
dc.identifier.volume | 213 | - |
dc.identifier.spage | 382 | - |
dc.identifier.epage | 390 | - |
dc.identifier.isi | WOS:000306246800045 | - |
dc.identifier.issnl | 0378-7753 | - |