Biomass gasification topic

Biomass gasification is a century old technology where wood, charcoal and other biomass is treated in presence of some air or oxygen, insufficient to combust it, and the gas formation is maximized. The temperature within the reactor rises on account of oxygen consuming reactions. The resulting gas tends to be higher in CO2 content than in case of pyrolysis. A major advantage of using an oxidative process with air or oxygen is that the char is removed, thus maximizing final output of the gas in... full article at wikipedia