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The term "[[biogas]]" is now used throughout the world rather than "methane gas" to describe the fuel produced through anaerobic fermentation of manures and vegetable matter in digesters. Biogas is generally between 40 and 70 percent methane, with the remainder consisting of carbon dioxide, hydrogen sulfide and.other trace gases.
The term "[[biogas]]" is now used throughout the world rather than "methane gas" to describe the fuel produced through anaerobic fermentation of manures and vegetable matter in digesters. Biogas is generally between 40 and 70 percent methane, with the remainder consisting of carbon dioxide, hydrogen sulfide and.other trace gases.


While the prospect of generating fuel and fertilizer from organic wastes is an attractive one, significant problems and debate persist about the value of biogas in addressing the energy needs of [[poor]] villages in the South.
While the prospect of generating fuel and fertilizer from organic wastes is an attractive one, significant problems and debate persist about the value of biogas in addressing the energy needs of poor villages in the South.


"Biogas technology represents one of a number of village-scale technologies that are currently enjoying a certain vogue among governments and aid agencies and that offer the technical possibility of more decentralized approaches to development. However, the technical and economic evaluation of these technologies has often been rudimentary. Therefore, there is a real danger that attempts are being made at wide-scale introduction of these techniques in the rural areas of the Third World before it is known whether they are in any sense appropriate to the problems of rural peoples."
"Biogas technology represents one of a number of village-scale technologies that are currently enjoying a certain vogue among governments and aid agencies and that offer the technical possibility of more decentralized approaches to development. However, the technical and economic evaluation of these technologies has often been rudimentary. Therefore, there is a real danger that attempts are being made at wide-scale introduction of these techniques in the rural areas of the Third World before it is known whether they are in any sense appropriate to the problems of rural peoples."
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