Different models have been proposed to describe the
complex and interrelated biochemical processes taking place
in anaerobic digestion. Among them, the generic model of
ADM 1 [23] presented by the IWA mathematical modeling
task group has been a subject of great interest during the last
decade. There are various other models also describing the
anaerobic digestion process to a level of significant accuracy.
A good example is the model suggested by Angelidaki et al.
[145]. Prediction accuracies of different models is a subject
of controversy, naturally, as for all the models. Fuentes et al.
[146] reported, for example, that the model by Angelidaki et
al. [145] was accurate in predicting the behavior of their