Biofilm reactors for industrial bioconversion processes: employing potential of enhanced reaction rates

Table 3 A comparison of production of ethanol in adsorbed cell biofilm reactors

System/Support	Reactor Type	Culture	Productivity [gL^-1h^-1]	Reference
Biofilm Reactors
Resin	Packed bed	Z. mobilis	135.8 (P_dT), 377.4 (P_dv)	[85]
Vermiculite	Packed bed^d	Z. mobilis	105.0 (P_dT), 210 (P_dv)	[84]
Sugarcane bagasse^a	Packed bed	S. cerevisiae	28.6^b	[4]
Polypropylene	Packed bed^e	Z. mobilis	536^c	[86]
Plastic composite	Packed bed	S. cerevisiae	76^c	[86]
Cell Recycle	CSTR	Z. mobilis	200^b	[88]
Batch/Continuous suspended cell (Control)
Continuous	CSTR	Z. mobilis	5.0^b	[86]
		S. cerevisiae	5.0^b	[86]
Continuous	CSTR	S. cerevisiae	3.35^b	[4]

a: The support was reported as an adsorbent of natural origin (perhaps sugarcane bagasse)
b: Not reported whether based on total reactor volume or void volume
c: Not reported (possibly based on void volume)
d: Cone shaped
e: Trickling packed bed
P_dT – Productivity based on total reactor volume
P_dv – Productivity based on reactor void volume

ISSN: 1475-2859