“…The review of literature presenting mathematical models of the biochemical reaction process taking place in a biotrickling filter (BTF) allows us to separate two groups which apply different formulation methods to the model. They are: the group of averaged macroscopic models (Dicks and Ottengraf, 25,26 Hekmat and Vortmeyer, 27 Mpanias and Baltzis 28 and Baltzis et al, 29 Iliuta and Larachi 30,32,33 and Iliuta et al, 31 San-Valero et al, 20 Rene et al 34,35 ) and the group of microscopic models (Alonso et al 36,37 and Liao et al, 38,39 Lu et al 40 ); detailed discussion of the microscopic models will be presented in a future paper.…”