Biogas

mixture of gases which are formed during decomposition of wastes (of dung, straw, organic domestic wastes) by cellulose anaerobic organisms with the participation of bacteriaof methanoic fermenting. An approximate composition of B.: methane — 55-65%, carbonic acid gas -35-45 %, admixture of nitrogen, hydrogen, hydrogen sulfide and other gases. B. is used as fuel, at dumps it contaminates an atmosphere being close to ground and often it becomes a reason for emerging of explosion and inflammable situations.