Table 11.
Main data for second generation ethanol production
|
Main data used in the simulation |
Value |
Unit |
|---|---|---|
| Pretreatment | ||
| Pressure |
2 |
Bar |
| Temperature |
121 |
°C |
| Cellulose to glucose conversion |
8.0 |
% |
| Hemicellulose to xylose conversion |
74.0 |
% |
| Solid/liquid ratio |
0.2 |
|
| Acid solution concentration |
3 |
wt% |
| Volumetric power (mixing)a |
342 |
W/m3 |
| Space-time |
40 |
min |
| Reactor volume |
182 |
m3 |
|
Pre-hydrolysis | ||
| Cellulose to glucose yield |
20 |
% |
| Solid/liquid ratio |
0.2 |
|
| Enzyme/Cellulose ratio |
67.34 (20) |
g/kg (FPU/g) |
| Space-time |
18 |
h |
| Temperature |
50 |
°C |
|
Hydrolysis | ||
| Cellulose to glucose yield |
65 |
%, w/w |
| Solid/liquid ratio |
0.178 |
|
| Volumetric power (mixing) a |
302.5 |
W/m3 |
| Enzyme/Cellulose ratio |
67.34 (20) |
g/kg (FPU/g) |
| Space-time |
54 |
h |
| Temperature |
50 |
°C |
|
C5 Fermentation | ||
| Xylose to ethanol yield |
70 |
%, w/w |
| Temperature |
30 |
°C |
| Space-time | 9 | h |
aCalculated using data from Pereira et al. [20].