A dynamic model was developed to describe the behaviour of primary and
secondary substrates in a biofilm reactor. The model incorporates str
uctured kinetics to describe the generation and consumption of reducin
g power in the catabolic and respiratory subsystems, respectively. Sec
ondary substrate transformation through oxygenolytic or reductive mech
anisms can be modelled under either single or dual limitation of the e
lectron donor and electron acceptor substrates. An example simulation
of a theoretical biofilm system was performed. (C) 1998 John Wiley & S
ons, Inc.