Bryers, James D.2017-09-252017-09-251993-01Bryers, James D. “Evaluation of the Effectiveness Factor for a Multiple Species Biofilm.” Biofouling 6, no. 4 (January 1993): 363–380. doi:10.1080/08927019309386237.0892-7014https://scholarworks.montana.edu/handle/1/13736An existing dynamic biofilm multiple species computer simulation (Wanner & Gujer, 1986) is used to model both heterotrophic carbon‐oxidizing and autotrophic nitrogen‐oxidizing bacterial populations within an accumulating biofilm, a system characteristic of the biological nitrification treatment of domestic waste‐waters. Such simulation predicts spatial distributions of N‐number of microbial species metabolizing a possible M‐number of substrates in an expanding (or contracting) biofilm as a function of time. Here the effects of substrate mass transfer limitations and bacterial species distributions on the overall biofilm effectiveness factor, a heterogeneous reaction‐based concept commonly used to interpret the effects of mass transfer on immobilized biological processes, are assessed.Article