Pyrolysis is a chemical reaction in which an organic substance decomposes under the action of heat and without other reagents. This transformation, which is distinct from combustion which involves oxidation with oxygen, produces new products following an atomic or molecular rearrangement.
Pyrolysis is used to obtain various solid (charcoal or biochar), liquid or gaseous hydrocarbons. This reaction is therefore used to change biomass into more easily usable energy sources and into soil enhancers.
Charcoal for soil improvement produced by pyrolysis. © bdiscoe CC by 3.0