In the adsorption process, molecules
of a contaminated gas are attracted to
and accumulate on the surface of the
activated carbon. Carbon is a commonly
used adsorbent due to its very larg e
s u rface area. It can be made from a
variety of base materials including coal,
wood and coconut shells, and is manuf
a c t u red or activated in a high temperat
u re controlled oxidation process. A
pound of highly activated carbon has a
s u rface area approaching 140 acre s