Table 2.
Surface area (SBET) and pore size (Vp) of the activated carbon obtained from the straw pellet and waste wood.
| No. | Activation Agent | Activation Agent to Carbon Molar Ratio | Straw Pellet | Wood Strips | ||
|---|---|---|---|---|---|---|
| SBET (m2/g) | Vp (cm3/g) | SBET (m2/g) | Vp (cm3/g) | |||
| 1 | without activation (reference sample) | 3.1 | 0.002 | 27.3 | 0.013 | |
| 2 | steam | 1:0.5 | 226.9 | 0.12 | 229.5 | 0.12 |
| 3 | steam | 1:1 | 452.5 | 0.23 | 248.5 | 0.13 |
| 4 | CO2 | 1:0.5 | 401.2 | 0.21 | 228.8 | 0.12 |
| 5 | CO2 | 1:1 | 682.1 | 0.35 | 385.0 | 0.20 |
| 6 | KOH | 1:2 * | 1349.6 | 0.69 | 1194.4 | 0.61 |
SBET— Brunauer–Emmett–Teller (BET) surface area [m2/g]; Vp—total volume of pore [cm3/g]; * mass ratio.