lower density and lower energy values (Virmond et al., 2012). Conventional ‘stoves’ are mostly designed to burn firewood or charcoal. The direct use of unprocessed solid biomass waste for cooking in wood-fuel stoves has some advantages and disadvantages, as shown in Table 1.
Several technologies and processes are available for the energy recovery of agriculture residues (Arvanitoyannis and Tserkezou,2008). Direct combustion is a solution feasible both for unprocessed materials and after briquetting or pelletizing (Chen et al.,2010; Mazzu, 2007).
Biomass gasification is a modern and convenient system. Gasification advantages have been known for nearly two hundred years (Table 2).