Biofuels are traditionally distinguished as 1st generation and 2nd generation biofuels. 1st generation biofuels typically refer to biofuels (bio-oil, biodiesel and ethanol) made from crops that are also grown for food markets and are already available as commodity products, but which generally have a poor overall carbon balance (possibly even negative) and a negative impact on social and ecological sustainability. Jatropha oil is seen by many researchers as a 2nd generation biofuel, because i...
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