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

Qureshi et al. Microbial Cell Factories 2005 4:24   doi:10.1186/1475-2859-4-24