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 (PdT), 377.4 (Pdv)	[85]
Vermiculite	Packed bedd	Z. mobilis	105.0 (PdT), 210 (Pdv)	[84]
Sugarcane bagassea	Packed bed	S. cerevisiae	28.6b	[4]
Polypropylene	Packed bede	Z. mobilis	536c	[86]
Plastic composite	Packed bed	S. cerevisiae	76c	[86]
Cell Recycle	CSTR	Z. mobilis	200b	[88]
Batch/Continuous suspended cell (Control)
Continuous	CSTR	Z. mobilis	5.0b	[86]
		S. cerevisiae	5.0b	[86]
Continuous	CSTR	S. cerevisiae	3.35b	[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