Young tree growing out of heap of biomass in hands- stock photo

 

The term biomass includes a vast number of materials, with a variety of properties, having in common their biological origin, hence deriving from the photosynthetic process based on the conversion of the solar energy and carbon dioxide of the atmosphere into complex organic molecules with high calorific power.

In general, biomasses (wood, woody residuals, waste and residue from vegetable or animal origin, but also dedicated agricultural production and parts of organic urban refuse) constitute a well distributed resource and often largely available locally and can be transformed with technologies based on their chemical and physical characteristic into energy and/or fuel.

In particular, fermentable biomasses can be converted into “biogas” through the anaerobic digestive process, while those lignocellulosic can be utilised directly as fuel or gasified to obtain the so called “syngas“.