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Biodiesel - Feedstocks
From Energy Crops - Canola or Soya:
Biodiesel fuel is made from vegetable fats and oils; and animal fats. The
vegetable fats and oils are
obtained from oilseed plants such as rapeseed/canola and soya bean;
jatropha (in India); palm oil seeds. Animal fats are rendered tissue fats
obtained from animals.
The oil seeds are crushed and
squeezed, taking out the oil and disposing off the press cake. The canola
or soya oil is then mixed with methanol and yeast to produce
biodiesel and glycerin.
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From Wastes:
Biodiesel can also be obtained from reuse of
wastes meant to be discarded, ordinarily, such as:
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waste cooking oil,
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agro-industry residues/wastes (such as
slaughterhouse waste)
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non-food-grade virgin oil
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agricultural surplus
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tall oil
(derived as a by-product of pulp and paper processing) and
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fish oil.
Biodiesel production from recycled wastes
are common for small scale productions. For large scale or commercial
productions, vegetable oils obtained from oilseed plants are used.
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