Biochar is an extremely complex stable form of carbon produced by the controlled heating of plant and/or animal material (biomass feedstock) at high temperatures (350 - 600oC) in a low oxygen environment.
The technique of heating in a low oxygen environment is called pyrolysis.
Biochars complex chemical structure is defined by the feedstock it is made from and the temperature conditions used in its manufacture.
Biochar is a form of charcoal but is different in that biochar is produced in controlled conditions so that most of the carbon is converted to usable products.
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