Urine-powered microbial fuel cell using a hyperpiliated pilT mutant of Pseudomonas aeruginosa.
J Ind Microbiol Biotechnol
; 43(1): 103-7, 2016 Jan.
Article
em En
| MEDLINE
| ID: mdl-26660316
ABSTRACT
This report documents the first observation of a urine-powered microbial fuel cell operating with a genetically engineered bacterial strain. Under identical conditions, a pilT mutant of the Gram-negative bacterium Pseudomonas aeruginosa showed a 2.7-fold increase in peak power density compared to the wild-type strain, PAO1. The reduced twitching motility and hyperpiliation of the pilT mutant enhances the formation of electrogenic biofilms. For both strains, the observed high internal resistance near open-circuit voltage is attributed to sluggish redox reactions on the anode surface and not to slow bacterial metabolism. This work lays the groundwork for optimization of multiple bacterial traits leading to increased electroactive properties and opens new opportunities for urine-based mini-devices.
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01-internacional
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MEDLINE
Assunto principal:
Pseudomonas aeruginosa
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Proteínas de Bactérias
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Urina
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Fontes de Energia Bioelétrica
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Proteínas Mutantes
Idioma:
En
Ano de publicação:
2016
Tipo de documento:
Article