MATHEMATICAL MODELING OF THE ELECTRIC CURRENT GENERATION IN A MICROBIAL FUEL CELL INOCULATED WITH MARINE SEDIMENT
AUTOR(ES)
Teleken, J. T., Silva, J. de Sá, Fraga, M. F., Ogrodowski, C. S., Santana, F. B., Carciofi, B. A. M.
FONTE
Braz. J. Chem. Eng.
DATA DE PUBLICAÇÃO
2017-01
RESUMO
Abstract Microbial fuel cells (MFC) are electrochemical devices that utilize the ability of some microorganisms to oxidize organic matter and transfer electrons resulting from their metabolism to an insoluble acceptor. The goal of the present study was to model the kinetics of electrical current generation from an MFC inoculated with marine sediment. For this purpose, a differential equation system was used, including the Nernst-Monod relationship and Ohm's Law, to describe the microbial metabolism and the mechanism of extracellular electron transfer (EET), respectively. The experimental data obtained by cyclic voltammetry analysis were properly described by the model. It was concluded that marine microorganisms preferably use a direct mechanism of EET by means of nanowires to establish the electrochemical contact with the anode. The mathematical modeling could help understand MFC operation and, consequently, contribute to improving power generation from this source.
Documentos Relacionados
- Degradation of Dead Microbial Biomass in a Marine Sediment
- Energy generation in a Microbial Fuel Cell using anaerobic sludge from a wastewater treatment plant
- Structure of Sediment-Associated Microbial Communities along a Heavy-Metal Contamination Gradient in the Marine Environment
- Potential Role of a Novel Psychrotolerant Member of the Family Geobacteraceae, Geopsychrobacter electrodiphilus gen. nov., sp. nov., in Electricity Production by a Marine Sediment Fuel Cell
- Electricity Generation in Microbial Fuel Cells Using Neutral Red as an Electronophore