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Table 2 ABE production in single-stage and three-stage continuous fermentations

From: Effective continuous acetone–butanol–ethanol production with full utilization of cassava by immobilized symbiotic TSH06

Parameters Single-stage continuous fermentation Three-stage continuous fermentation
Dilution rate (h−1) 0.2 0.2
Initial starch (g/L) 54.2 55.6
Residue starch (g/L) 23.7 3.6
Residue glucose (g/L) 4.7 4.8
Butanol (g/L) 6.3 11.2
ABE (g/L) 9.3 16.8
Butanol yield (g/g) 0.24 0.24
Butanol productivity (g/L/h) 1.26 0.75
ABE productivity (g/L/h) 1.86 1.12
Substrate utilization rate (%) 48.5 85.8