ethanol based biodiesel production
Thanks to friend Aleks for digging this one up.
"Conversion of rapeseed oil into ethyl esters for use as Biodiesel fuel
involves transesterification of the oil triglycerides to mono-esters of the
component fatty acids. To accomplish this conversion, raw rapeseed oil is
treated at room temperature with ethyl alcohol in the presence of potassium
hydroxide as a catalyst. During the process, the glycerol which is produced
is insoluble in the ester product, and being heavier, settles out carrying
most of the dissolved KOH catalyst with it. "
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