Method for improving the long term stability of biodiesel
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United States of America Patent
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Issued Date -
May 11, 2006
app pub date -
Sep 23, 2003
filing date -
Dec 7, 2002
priority date (Note) -
Abandoned
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Abstract
A method for improvement of the long term stability of biodiesel is described, in which the crude ester produced by transesterification of a vegetable or animal fat or oil with methanol, with a strong acid or with a mixture of a strong acid and a complex former is subsequently treated intensively and the ester layer separated from the emulsion formed thereby is subjected to a thorough water washing and subsequently dried.
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