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Robert Warren Wrote
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ETHANOL DEHYDRATION and PHASE SEPARATION
< DEHYDRATION >
It is necessary to dehydrate ethanol to mix it with gasoline.
Distillation leaves 3 to 5 % water in the ethanol.
Of the many forms of dehydration, 3 are used most commonly:
CASTOR OIL SEPARAT
< PHASE SEPARATION >
When 'water laden' ethanol is blended with gasoline, its water content causes 'PHASE SEPARATION'
This means that ethanol with 3 - 5 % water will act more like water than ethanol when mixed with gasoline.
It then seperates out and sets to the bottom of the tank, with all the gasoline ending on top of it
This is called 'PHASE SEPARATION'
Because of phase separation we must dehydrate Ethanol before mixing it with gasoline.