The characteristics of the prepared activated carbon
with the yield of 19.66 % were bulk density of 0.5160 g/cm3
, 6.03 % ash, iodine number of 620.16 mg/
g, methylene blue number of 176.75 mg/g and 559.48 m2/g of BET surface area. In addition, it had been
found that when there was an addition of pyrolysis time with air before steam activation led to higher
porosity development than one step pyrolysis and steam activation.