Types of activated carbon

The different types of activated carbon can be categorized depending on:

The source materials
Bituminous coal, anthracite, coconut shells, wood, peat, lignite, …
In theory all carbon-containing materials can be used.
The physical form
Powder, granular, cylindrical (pellets), spherical, …
The activation process
Steam activation or chemically enhanced activation (by adding dehydrating salts such as calcium chloride, magnesium chloride and zinc chloride).
The post-treatment
Wash, sieve, dedust, impregnation, …