Methods of purifying biodiesel fuels
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United States of America Patent
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Aug 16, 2011
Grant Date -
Aug 28, 2008
app pub date -
Feb 22, 2007
filing date -
Feb 22, 2007
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Abstract
The invention provides methods of synthesizing and purifying methyl esters and specifically biodiesel fuels. The methods include acid-catalyzed transesterification of a triglyceride source followed by formation of an acidic emulsion that is subjected to an electric field to break the emulsion and recover the purified methyl esters. After recovery, the purified methyl esters may be used as a highly purified and stable biodiesel fuel without further treatment. The electric field may be efficiently applied to the acidic emulsion in an electrochemical reactor such as an electrocoagulation chamber.
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