Patent ID: 7998225
Filing Date: 2011-08-16
Classification: B01D,C10G,C11C,Y02E,Y02P

Abstract:
1. A method of preparing a biodiesel fuel from triglyceride oils comprising: mixing a triglyceride oil with a first acid to form an acidified oil comprising glycerin; removing the glycerin from the acidified oil to form a modified acidified oil; mixing the modified acidified oil with a first portion of alcohol to form an alcohol-oil mixture; mixing the alcohol-oil mixture with a base and a second portion of alcohol to form a methyl ester solution; mixing the methyl ester solution with a second acid to form an acidified methyl ester solution; mixing the acidified methyl ester solution with an aqueous salt solution to form an emulsion; exposing the emulsion to an electric field to form a broken emulsion; and, recovering a biodiesel fuel from the broken emulsion.