Batch Continuous Continuous Continuous
0.06 h-1 0.12 h-1 1.88 h-1
Glucose Feed Conc. (g/L) 52 50 60 60
Outlet Conc. (g/L) 1.0 ± 0.2 16.77 ± 1.24 15.87 ± 1.81 13.70 ± 1.62
Butyric Acid Feed Conc. (g/L) 4.0 4.0 6.8 5.0
Outlet Conc. (g/L) 2.35 ± 0.11 3.01 ± 0.61 2.59 ± 0.19 1.89 ± 0.28
Acetic Acid Titer (g/L) 1.83 ± 0.076 3.26 ± 0.23 2.27 ± 0.08 1.85 ± 0.63
Yield (g/g) 0.032 ± 0.002 0.090 ± 0.016 0.053 ± 0.005 0.042 ± 0.003
Productivity (g/L∙h) 0.007 ± 0.001 0.20 ± 0.02 0.27 ± 0.01 3.38 ± 0.10
Acetone Titer (g/L) 5.58 ± 0.14 3.19 ± 0.24 3.86 ± 0.20 3.38 ± 0.55
Yield (g/g) 0.11 ± 0.02 0.09 ± 0.01 0.09 ± 0.01 0.09 ± 0.01
Productivity (g/L∙h) 0.02 ± 0.002 0.19 ±0.01 0.46 ± 0.02 7.03 ± 0.36
Butanol Titer (g/L) 13.08 ± 0.23 8.72 ± 0.51 10.37 ± 0.29 9.55 ± 0.75
Yield (g/g) 0.25 ± 0.01 0.24 ± 0.02 0.24 ± 0.02 0.24 ± 0.02
Productivity (g/L∙h) 0.05 ± 0.01 0.52 ± 0.03 1.24 ± 0.04 16.75 ± 1.68
Ethanol Titer (g/L) 0.87 ± 0.02 0.62 ± 0.18 0.72 ± 0.12 0.77 ± 0.20
Yield (g/g) 0.014 ±0.001 0.017 ± 0.006 0.017 ± 0.002 0.02 ± 0.001
Productivity (g/L∙h) 0.003 ±0.0002 0.038 ± 0.013 0.083 ± 0.014 1.23 ± 0.07
ABE Titer (g/L) 19.23 ± 0.38 12.52 ± 0.28 14.98 ± 0.55 13.70 ± 0.32
Yield (g/g) 0.38 ± 0.02 0.35 ± 0.02 0.35 ± 0.04 0.35 ± 0.04
Productivity (g/L∙h) 0.07 ± 0.01 0.72 ± 0.09 1.79 ± 0.19 24.15 ± 2.75