Biochar can be produced either by slow pyrolysis or fast pyrolysis, similar as the method to produce charcoal.
However, the vast amount of EFB accumulation due to current demand of biofuel seems to be a problem among
farmers and palm oil plantation developers. Heavy accumulation of EFB need to be managed properly as this may
cause problems such as damage to field roads and frequent upgrading of harvesting paths which can be costly due to
poor management of EFB in palm oil field (Shafie et al., 2012). Furthermore, the usage of pure charcoal will cause
great impact on the environment such as greenhouse gases emission, global warming crisis, thinning of ozone layer
and eventually, altering the world climate.