Biodiesel
Biodiesel refers to a
diesel-equivalent processed fuel derived from biological sources (such as
vegetable oils) which can be used in unmodified
diesel-engine vehicles. It is distinguished from the
straight vegetable oils (SVO) or
waste vegetable oils (WVO) used as fuels in some diesel vehicles.In this article's context, biodiesel refers to
alkyl esters made from the
transesterification of vegetable oils or
animal fats. On
August 31,
1937, G. Chavanne of the University of Brussels (Belgium) was granted a patent for a 'Procedure for the transformation of vegetable oils for their uses as fuels' (fr. 'Procédé de Transformation d’Huiles Végétales en Vue de Leur Utilisation comme Carburants') Belgian Patent 422,877. This patent described the alcoholysis (often referred to as transesterification) of vegetable oils using ethanol (and mentions methanol) in order to separate the fatty acids from the glycerol by replacing the glycerol with short linear alcohols. This appears to be the first account of the production of what is known as 'biodiesel' today.
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Biodiesel
Biodiesel
Biodiesel
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Biodiesel