Table 5.
Specific surface area and pore volume before and after pretreatment for different substrates[108,109]
| Substrate | Pretreatment conditions | Specific surface area (m2/g) | Pore volume (ml/g) |
|---|---|---|---|
| Rice straw |
untreated |
1.33 |
0.004 |
| |
130°C, 2% H2SO4, 15 min |
4.48 |
0.012 |
| |
150°C, 2% H2SO4, 4 min |
5.35 |
0.020 |
| |
160°C, 2% H2SO4, 2 min |
5.76 |
0.022 |
| |
170°C, 2% H2SO4, 1 min |
8.94 |
0.027 |
| Sugarcane bagasse |
untreated |
1.00 |
NA |
| |
130°C, 2% H2SO4, 5 min |
1.80 |
NA |
| |
160°C, 2% H2SO4, 5 min |
2.38 |
NA |
| |
190°C, 2% H2SO4, 5 min |
6.31 |
NA |
| |
160°C, 2% H2SO4, 10 min |
0.98 |
NA |
| 190°C, 2% H2SO4, 10 min | 5.00 | NA |