characteristics however vary with the physical characteristics
such as internal total available surface area and
micro/meso/macro-pore volume of the activated charcoal.
Pore size distribution has been used to describe the
internal structures and adsorption capacities of activated
charcoals [3]. Chemical functional groups and the internal
surface areas account for, and are associated with, highly
active surface properties of the activated charcoal, and
these areas typically range from 500 m2/g to 3000 m2/g.
Due to varying methods of preparation,the pore sizes ofthe
activated charcoal can be categorized as being micropores
(width < 2 nm), mesopores (width = 2–50 nm), or macropores
(width > 50 nm); the differences in the size of their
width openings being a representation of the pore distance.