Add EPS concentration for different positions in the biofilm

[StudDavid]

I want to add a quantative variable for EPS concentration. EPS are biopolymers of microbial origin in which biofilm microorganisms are embedded. For our purposes, the EPS may be thougt of a glue. EPS concentrations should have an influence on drag forces by increasing friction.
An approach may be adopted by https://iwaponline.com/wst/article-abstract/43/6/135/9448 , which use the Luedeking and Piret equation to model EPS production kinetics,