Urine disinfection and in situ pathogen killing using a Microbial Fuel Cell cascade system

Ieropoulos, I., Pasternak, G. and Greenman, J. (2017) Urine disinfection and in situ pathogen killing using a Microbial Fuel Cell cascade system. PLOS ONE, 12 (5). e0176475. ISSN 1932-6203 Available from: http://eprints.uwe.ac.uk/31768

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Publisher's URL: http://dx.doi.org/10.1371/journal.pone.0176475


Microbial Fuel Cells (MFCs) are emerging as an effective means of treating different types of waste including urine and wastewater. However, the fate of pathogens in an MFC-based system remains unknown, and in this study we investigated the effect of introducing the enteric pathogen Salmonella enterica serovar enteritidis in an MFC cascade system. The MFCs continuously fed with urine showed high disinfecting potential. As part of two independent trials, during which the bioluminescent S. enteritidis strain was introduced into the MFC cascade, the number of viable counts and the level of bioluminescence were reduced by up to 4.43±0.04 and 4.21±0.01 log-fold, respectively. The killing efficacy observed for the MFCs operating under closed-circuit conditions, were higher by 1.69 and 1.72 log-fold reduction than for the open circuit MFCs, in both independent trials. The results indicated that the bactericidal properties of a well performing anode were dependent on power performance and the oxidation-reduction potential recorded for the MFCs. This is the first time that the fate of pathogenic bacteria has been investigated in continuously operating MFC systems.

Item Type:Article
Additional Information:Author Contributions Conceptualization: II JG. Data curation: GP. Formal analysis: GP II. Funding acquisition: II JG. Investigation: GP. Methodology: GP II JG. Project administration: II. Resources: GP. Software: GP. Supervision: II JG. Validation: II GP JG. Visualization: GP II. Writing – original draft: GP II. Writing – review & editing: II GP JG.
Uncontrolled Keywords:mfc, mfcs, microbial fuel cell, urine, pathogen killing, cascade, ieropoulos, bbic, bristol bioenergy centre
Faculty/Department:Faculty of Environment and Technology > Department of Engineering Design and Mathematics
ID Code:31768
Deposited By: J.-M. Maheu
Deposited On:09 May 2017 09:19
Last Modified:10 May 2017 04:55

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