Fig. 3: Anaerobic cross-feeding biofilm.
From: Diffusion-based mechanism explains spatial organization in cross-feeding biofilms
Effect of diffusivity of secondary substrate on the emergent distribution of biomass concentrations (a), substrate concentrations (b) and net substrate rates (c) over the biofilm depth, for anaerobic cross-feeding biofilms (Case A1). d Total active biomass types retained in the reactor (kg biomass) function of relative diffusivity DS2/DS1. The ratio X2/X1 retained (dashed line) shows a much greater abundance of the secondary degrader with increasing DS2, while the theoretical ratio of 0.9 (i.e., 1−Y1, like in a chemostat) is attained when DS2 tends to zero.
