Method for purifying biodiesel fuel

Fuel and related compositions – Method involving electric or wave energy

Reexamination Certificate

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Details

C044S385000, C044S389000, C210S748010

Reexamination Certificate

active

08062391

ABSTRACT:
Provided is a method for purifying a biodiesel fuel while completely preventing or greatly reducing generation of waste water. The present invention relates to a method for purifying a biodiesel fuel characterized by applying an electric field to or heating a crude biodiesel fuel and a method for purifying a biodiesel fuel characterized by adding water (preferably containing a demulsifier such as an inorganic calcium salt or a magnesium salt) to a crude biodiesel fuel to form W/O emulsion, and breaking the emulsion by application of an electric field or heating, etc.

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