The majority of studies on solid-to-solid bioconversions have been executed in batch
systems. From these studies, we first derived a classification of batch solid-to-solid
bioconversions in four types (Figure 8.1). Based on the characteristics of the four types,
rules of thumb were developed that may be useful for selecting the most appropriate type
for a specific solid-to-solid bioconversion. As for commercial application the conversion,
scale-up, and kinetics of the process are important, each of these types is then
characterised with respect to these features.
Figure 8.1 Types of solid-to-solid
bioconversions; M in type 4 refers to a
métal ion.
Multiphase bioreactor design 240