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Changes in carbon electrode morphology affect microbial fuel cell performance with Shewanella oneidensis MR-1

Sanchez, DVP and Jacobs, D and Gregory, K and Huang, J and Hu, Y and Vidic, R and Yun, M (2015) Changes in carbon electrode morphology affect microbial fuel cell performance with Shewanella oneidensis MR-1. Energies, 8 (3). 1817 - 1829.

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Abstract

© 2015 by the authors. The formation of biofilm-electrodes is crucial for microbial fuel cell current production because optimal performance is often associated with thick biofilms. However, the influence of the electrode structure and morphology on biofilm formation is only beginning to be investigated. This study provides insight on how changing the electrode morphology affects current production of a pure culture of anode-respiring bacteria. Specifically, an analysis of the effects of carbon fiber electrodes with drastically different morphologies on biofilm formation and anode respiration by a pure culture (Shewanella oneidensis MR-1) were examined. Results showed that carbon nanofiber mats had -10 fold higher current than plain carbon microfiber paper and that the increase was not due to an increase in electrode surface area, conductivity, or the size of the constituent material. Cyclic voltammograms reveal that electron transfer from the carbon nanofiber mats was biofilm-based suggesting that decreasing the diameter of the constituent carbon material from a few microns to a few hundred nanometers is beneficial for electricity production solely because the electrode surface creates a more relevant mesh for biofilm formation by Shewanella oneidensis MR-1.


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Details

Item Type: Article
Status: Published
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Sanchez, DVPdavidsanchez@pitt.eduDPS22
Jacobs, D
Gregory, K
Huang, J
Hu, Y
Vidic, Rvidic@pitt.eduVIDIC
Yun, Mmiy16@pitt.eduMIY16
Contributors:
ContributionContributors NameEmailPitt UsernameORCID
EditorAmidon, Thomas E.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Date: 1 January 2015
Date Type: Publication
Journal or Publication Title: Energies
Volume: 8
Number: 3
Page Range: 1817 - 1829
DOI or Unique Handle: 10.3390/en8031817
Schools and Programs: Swanson School of Engineering > Chemical and Petroleum Engineering
Swanson School of Engineering > Civil and Environmental Engineering
Swanson School of Engineering > Electrical and Computer Engineering
Refereed: Yes
Date Deposited: 24 Mar 2015 18:23
Last Modified: 02 Feb 2019 15:55
URI: http://d-scholarship.pitt.edu/id/eprint/24133

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