  An accurate modelling of bio-electrochemical processes that govern Microbial
Fuel Cells (MFCs) and mapping their behaviour according to several parameters
will enhance the development of MFC technology and enable their successful
implementation in well defined applications. The geometry of the electrodes is
among key parameters determining efficiency of MFCs due to the formation of a
biofilm of anodophilic bacteria on the anode electrode, which is a decisive
factor for the functionality of the device. We simulate the bio-electrochemical
processes in an MFC while taking into account the geometry of the electrodes.
Namely, lattice Boltzmann methods are used to simulate the fluid dynamics and
the advection-diffusion phenomena in the anode compartment. The model is
verified on voltage and current outputs of a single MFC derived from laboratory
experiments under continuous flow.
