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Modelling Microbial Fuel Cells using lattice Boltzmann methods.

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Michail-Antisthenis Tsompanas, Andrew Adamatzky, Ioannis Ieropoulos, Neil Phillips, Georgios Ch. Sirakoulis, John Greenman

An accurate modelling of bio-electrochemical processes that govern MicrobialFuel Cells (MFCs) and mapping their behaviour according to several parameterswill enhance the development of MFC technology and enable their successfulimplementation in well defined applications. The geometry of the electrodes isamong key parameters determining efficiency of MFCs due to the formation of abiofilm of anodophilic bacteria on the anode electrode, which is a decisivefactor for the functionality of the device. We simulate the bio-electrochemicalprocesses in an MFC while taking into account the geometry of the electrodes.Namely, lattice Boltzmann methods are used to simulate the fluid dynamics andthe advection-diffusion phenomena in the anode compartment. The model isverified on voltage and current outputs of a single MFC derived from laboratoryexperiments under continuous flow.

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