Gasification is a process that convert carbonaceous materials into combustible gases.
The resulting gas is called producer gas (or wood gas when fueled by wood) and may be more efficiently converted to high quality energy such as electricity than would be possible by direct combustion of the fuel. Also, corrosive ash elements such as chloride and potassium may be retained by the gasification process, allowing high temperature combustion of the gas from otherwise problematic fuels.
Gasification relies on chemical processes at elevated temperatures >700°C, contrary to biological processes such as anaerobic fermentation (digestion) which produces biogas.
