Table 1. Physical Parameters of Activated Carbon Treated with Different Concentrations of HNO3.
| Stotal(m2 g–1) | Smicroa(m2 g–1) | Vmicroa(cm3 g–1) | Vtotal(cm3 g–1) | Db(nm) | |
|---|---|---|---|---|---|
| AC | 1609 | 1093 | 0.444 | 0.748 | 3.30 |
| AC1 | 1499 | 1091 | 0.444 | 0.672 | 3.14 |
| AC2 | 1514 | 1181 | 0.474 | 0.675 | 3.32 |
| AC3 | 1488 | 1141 | 0.467 | 0.675 | 3.24 |
| AC4 | 1472 | 1209 | 0.487 | 0.643 | 3.04 |
| Al2O3 | 301 | 38 | 0.016 | 0.641 | 6.60 |
Surface area and pore volume of micropores were calculated by the t-plot method.
Average pore diameter was determined by the BJH method.