Nernst-Monod

Torres Cl, Marcus AK, Parameswaran P, Rittmann BE. Kinetic experiments for evaluating the Nernst-Monod model for anode-respiring bacteria (ARB) in a biofilm anode. Environ Sci Technol 2008 42(17) 6593-6597. 

For the Nernst-Monod term expression, the f and Eka variables were originally defined in MATLAB and needed to be first sent to COMSOL using the fem.const command as shown previously. The variable E is a solution component (i.e., dependent variable) of a generic PDE application mode that is described in detail later. It is only defined in COMSOL, and thus, it was not necessary to declare it in MATLAB or send it via the fem.const command. Likewise, for the specific rate of substrate utilization expression, q 5, and were defined in MATLAB, whereas S and Mo are the solution components of the diffusion application mode. Note that in MATLAB and COMSOL, we do not use subscripts instead, we use regular fonts. Because the expression contains both COMSOL defined and MATLAB defined variables, the expression must be in single quotes. 

What Are the Theoretical Maximum Biofilm Thicknesses for Different Conductivities While biofilms may grow thick enough to restrict cells at their base from receiving nutrients, for practical applications, it is often desirable to have a biofilm that is entirely active across its thickness. To determine the maximum theoretical biofilm thickness, the model is restricted to cases where the biofilm is not substrate limited and the entire biofilm is active. We define the limiting biofilm thickness to be the distance at which the Nernst-Monod term drops to below 0.01 (the point in the biofilm where the biofilm activity is restricted to just 1 % of by potential drop lim-... 

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