Table 1 Start data of the unknown state variables in the model
State variable | Description | Case 1 Glucose fermentation | Case 2 Xylose fermentation | Case 3 Sugar mix fermentation | Case 4 Wheat straw hydrolysate fermentation | Unit |
|---|---|---|---|---|---|---|
Glu | Glucose concentration | 0.40 | – | 0.28 | 0.26 | cmol/L |
Xyl | Xylose concentration | – | 0.36 | 0.10 | 0.11 | cmol/L |
Ara | Arabinose concentration | – | – | 0.012 | 0.014 | cmol/L |
X (Biomass) | Biomass concentration | 0.0013 | 0.00071 | 0.0016 | 0.0058 | cmol/L |
Ac | Acetate concentration | 0.0012 | 0 | 0.0039 | 0.021 | cmol/L |
H2,aq | H2 concentration (liquid phase) | 0 | 0 | 0 | 0 | M |
CO2,aq | CO2 concentration (liquid phase) | 0 | 0 | 0 | 0 | cmol/L |
CO2,sol | Concentration of all CO2 ionic species (HCO3− and CO 23 −) | 0 | 0 | 0 | 0 | cmol/L |
H2,g | H2 concentration (gas phase) | 0 | 0 | 0 | 0 | M |
CO2,g | CO2 concentration (gas phase) | 0 | 0 | 0 | 0 | cmol/L |
E2 | Enzyme concentration | – | – | 1e−7 | 1e−7 | cmol/L |