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Biogas-fueled pump

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[[Image:biogas pump.jpg|thumb|right|300px|Biogas irrigation pump. Photo: [http://www.flickr.com/photos/djfulford/3156710354/in/set-72157612011013426 d.j. fulford.]]]

Using biogas for pumps in irrigation is gaining in popularity in India and elsewhere, as the savings in petroleum fuel prices are great. ~~However, the~~ A diesel pump can also be converted into a bio-gas pump used for pumping water. The cheapest way to get biogas, once a pump is obtained, is to build a biomass digester, which means biomass must be collected, cultivated, or found.

Biomass in the form of firewood, charcoal, agricultural residues, or dried animal dung is already the main energy resource for the majority of the poorer half of humanity, over 2 billion people. They currently use 15% or more of total world energy, entirely in the form of biomass. Certain poorer countries depend on biomass fuels at present for over 90% of their energy needs (i.e. mainly for cooking fuel). It has been estimated that 53% of energy use in Africa, 17% in Asia and 8% in Latin America is currently met from biomass resources. Therefore biomass is already a huge and vital economic resource, although it is usually informally exploited mainly for cooking purposes and still remains rarely used for the production of shaft power via heat engines, and even less so for irrigation pumping. However, more and more farmers are using cow dung to create biogas or communities are using toilets to recycle their excrement in their own bio-digesters.

Winona

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