Electro-synthèse microbienne : catalyse de la réduction de CO2 par Geobacter sulfurreducens

Abstract : Microbial Fuel cells (MFC) convert the chemical energy contained in organic fuels directly into electrical energy, using bacterial biofilms as the catalyst for the electrochemical reaction. The catalysis by bacterial biofilms discovered on MFCs has then been applied to electro-synthesis. The purpose of my internship was firstly to validate the previous results obtained with Geobacter sulfurreducens on the microbial electrocatalysis of fumarate reduction and then to compare these results with those obtained in the absence of electrode to improve the understanding of metabolic pathways. The experiments carried out in electrochemical reactors gave poorly-mastered current-time curves but fairly reproducible maximal values of the current densities, ranging from 5 to 8A/m2 . Analyses by cyclic voltammetry and biofilm imaging by epifluorescence microscopy suggested some links between the quantity of biomass on the electrode surface and the electrochemical signals. and the current on glycerol production.
Document type :
Master thesis
File URL :
http://docnum.univ-lorraine.fr/prive/BUS_M_2014_YAWBIO_JEMINA.pdf
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https://hal.univ-lorraine.fr/hal-02096960
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Submitted on : Thursday, April 11, 2019 - 4:44:57 PM
Last modification on : Thursday, April 11, 2019 - 4:44:57 PM

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Jemina Yawbio. Electro-synthèse microbienne : catalyse de la réduction de CO2 par Geobacter sulfurreducens. Microbiologie et Parasitologie. 2014. ⟨hal-02096960⟩

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