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Specific Surface Area Of Activated Carbon. A pound of carbon has more than 35 acres of surface almost 100 football fields. Porous activated carbon with a ultrahigh specific surface area 3164 m 2 g 1 and large pore volume 188 cm 3 g 1 was prepared from waste litchi shells with channel-like macropores via a KOH activation method. A single gram of GAC can have a surface area exceeding 1000 m2. Xm sorption value weight of adsorbed N2 divided by weight of carbon sample N Avagadros Number 6025 E23.
Xm sorption value weight of adsorbed N2 divided by weight of carbon sample N Avagadros Number 6025 E23. Depending on the raw material the activation process and other factors the surface area will vary giving the charcoal more or less adsorption potential. GACs capacity for organic removal is derived from its very high surface area. It is not possible to utilize the complete surface area. In its 1 application the activated carbon should be supported by the performance of adsorptive capacity such as specific surface areas pore volumes and pore size distributions as well as surface. Figure 1 shows two micro-graphs of the internal structure of steam-ac-tivated lignite.
Cavities on the surface of the activated carbon result from the evaporation of spaces occupied by zinc chloride during the carbonisation process so chloride is an active agent in producing activated carbon with a high surface area and provides higher adsorption capacity Angin 2014.
A cross-sectional area of nitrogen molecule in. This is followed by quenching of the carbon in air. A cross-sectional area of nitrogen molecule in. A single gram of GAC can have a surface area exceeding 1000 m2. S specific surface in m2g. Activated carbon is an internally porous microcrystalline non-graphitic form of carbon.