| 
      WFB, waste fiber board; BET, Brunauer-Emmett-Telle
        | Fiberboard | Properties | Activated carbon from WFB |  
        | 1 | C content (wt    %) | 90.46 |  
        | 2 | H content (wt    %) | 0.59 |  
        | 3 | N content (wt    %) | 1.36 |  
        | 4 | Iodine number    (mg/g) | 1370 |  
        | 5 | BET surface    area (m2/g) | 1576 |  
        | 6 | Total pore    volume (cm3/g) | 0.953 |  |