Techniques are employed for producing effective AC from
agriculture waste, which include physical treatment; heat
treatment, ammonia gas treatment (amination and ammoxidation) and chemical treatment; impregnation (prior to carbonization) of chemicals. The main objective of present was to prepare
AC from Eucalyptus camendalisis wood with highly microporous
and large specific surface area that considered highly potential
adsorbent for CO2 adsorption. Therefore, we reported the
synthesis of AC with high specific surface area and high micropore
volume from agricultural waste materials. We carried out the
experiments based on the impregnation procedure since the
lower temperatures and shorter time needed for activating
carbon. Moreover, the adsorptive capacity of the AC can be
efficiently increased by chemical impregnation which together
with the surface area, pore size distribution and surface chemistry
of AC. Previously, it has been reported by Romanos et al. [23] that
AC with high specific surface area, porosities, nanometer pore
volumes achieved by the chemical impregnation methods of KOH
and H3PO4. In addition, it has been found by Khalili et al. [6] that
the effect of impregnation of AC from paper mill sludge with ZnCl2
promoted microporosity of AC by controlling the amount of zinc.
Besides that, a few works studied the synthesis of AC from
Eucalyptus wood with phosphoric acid. However, to our
knowledge, there is a lack of information in the literature about
the preparation of AC from Eucalyptus wood by the chemical
impregnation of ZnCl2 and KOH as activating agent and also their
application for CO2 adsorbent.