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Multi-system Nernst–Michaelis–Menten model applied to bioanodes formed from sewage sludge

Rimboud, Mickaël and Desmond-Le Quemener, Elie and Erable, Benjamin and Bouchez, Théodore and Bergel, Alain Multi-system Nernst–Michaelis–Menten model applied to bioanodes formed from sewage sludge. (2015) Bioresource Technology, 195. 162-169. ISSN 0960-8524

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Official URL: http://dx.doi.org/10.1016/j.biortech.2015.05.069


Bioanodes were formed under constant polarization at 0.2 V/SCE from fermented sewage sludge. Current densities reached were 9.3 ± 1.2 A m2 with the whole fermented sludge and 6.2 ± 0.9 A m2 with the fermented sludge supernatant. The bioanode kinetics was analysed by differentiating among the contributions of the three redox systems identified by voltammetry. Each system ensured reversible Nernstian electron transfer but around a different central potential. The global overpotential required to reach the maximum current plateau was not imposed by slow electron transfer rates but was due to the potential range covered by the different redox systems. The microbial communities of the three bioanodes were analysed by 16S rRNA gene pyrosequencing. They showed a significant microbial diversity around a core of Desulfuromonadales, the proportion of which was correlated with the electrochemical performance of the bioanodes.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Bioresource Technology website : http://www.sciencedirect.com/science/journal/09608524
HAL Id:hal-01324124
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
French research institutions > Institut national de Recherche en Sciences et Technologies pour l'Environnement et l'Agriculture - IRSTEA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
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Deposited On:31 May 2016 14:11

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