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Wood Activated Carbon


Wood Charcoal
When carbon-containing raw wood is carbonized in a constrained environment with no oxygen, a process known as pyrolysis, wood activated carbon is created. The wood material must break down in order to become wood charcoal, a porous black solid that is mostly made of elemental carbon.

Wood Activated Carbon
An essential component of activated carbon is wood charcoal. Due to residues obstructing its fine structure, it is not a particularly effective adsorbent for either liquids or vapors. This structure has to be opened up by getting rid of the tarry remnants and volatiles in order to get the charcoal into “Activated Mode.” The method that is now most frequently employed is heating the granulated wood charcoal to a low red heat in a steam-heated environment. By keeping oxygen out, the steam keeps the charcoal from burning away. The pore structure is left open while the volatile tars may be distilled away and are transported by the steam. The processed charcoal is discharged into covered containers where it is given time to cool.

Properties of Wood Activated Carbon
Surface Area – In general, the greater the internal surface area, the greater the potential of carbon to adsorb. A spoonful of activated carbon easily equals to the surface area of a soccer field since it has a surface area of 500 to 1500 m2/g or even more.This large surface area isproduced during the activation process. The most typical method is steam activation, which produces a large number of pores in the carbonaceous matrix by selectively burning holes into the carbonized raw material at a temperature of around 900°C. All of the pore spaces found inside an activated carbon particle are referred to as the total pore volume. Volume in proportion to weight is given in milliliters per gram (ml/g). In general, efficacy increases with increasing pore capacity. However, choosing the right carbon mostly depends on matching the pore size and volume of the carbon with the contaminants that would be absorbed by it.Pore Volume Distribution: Mesopores r > 1–25 nm are distributed differently in wood activated carbon.

Typical Parameters of Wood Activated Carbon

Granular Activated Carbon Powdered Activated Carbon
Moisture 5% max 5% max
Ash 10% max 10 – 12% max
Hardness 85% min
MB value 250 250
Density 0.230 – 0.290 gm/cc 0.300 – 0.400 gm/cc
pH 11 11



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Wood Activated Carbon


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