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== Biofuels from Waste ==

== Biofuels from Waste ==

Bio-fuels may also be manufactured from products which would otherwise be considered waste.  For example used cooking oil is collected by people who use it to manufacture bio-diesel for their own use.  There are a variety of processes that may be used (called "recipes" among home bio-diesel makers). In undeveloped locations, animal waste is fed into anaerobic composters to produce methane gas for fuel, usually only on a small, household scale.  Dried dung is also used in undeveloped areas as a replacement for firewood.  While these applications provide benefits both by easing the load on mineral  fuel sources and by re-processing and recycling end products that would otherwise present disposal difficulties, bio-fuels from waste have not been pursued on large scales.<ref>http://journeytoforever.org/biodiesel_make.html</ref>

Bio-fuels may also be manufactured from products which would otherwise be considered waste.  For example, used cooking oil is collected by people who use it to manufacture bio-diesel for their own use.  There are a variety of processes that may be used (called "recipes" among home bio-diesel makers). In undeveloped locations, animal waste is fed into anaerobic composters to produce methane gas for fuel, usually only on a small, household scale.  Dried dung is also used in undeveloped areas as a replacement for firewood.  While these applications provide benefits both by easing the load on mineral  fuel sources and by re-processing and recycling end products that would otherwise present disposal difficulties, bio-fuels from waste have not been pursued on large scales.<ref>http://journeytoforever.org/biodiesel_make.html</ref>

==References==

==References==