Flare gas. This is an associated gas obtained during crude oil exploration, largely consisting of methane and higher hydrocarbons. The use of flare gas—which is generally available free of charge as a waste product—ensures a fuel source for on- site power generation and, if required, the engines can also provide a heat supply for surrounding facilities. Consequently this problem gas, instead of flaring it off while causing ecological exposure, can be used economically and practically. Biogas. For a wide range of organic substances from agriculture, foodstuff, and feed industries, anaerobic fermentation is a superior alternative to composting. Biogas—a mixture of methane and carbon dioxide—is formed in the fermentation process of a.
