Patent ID: 7754905

Claim:
A method for preparing a fatty acid alkyl ester from a feedstock comprising: providing a feedstock comprising at least one source of fatty acids; mixing said feedstock with a treatment composition comprising alcohol and a catalyst to form a reaction mixture, wherein the temperature of the reaction mixture is in the range of 40° to 200° C.; forcing said reaction mixture through at least two controlled flow cavitation apparatuses at a processing pressure capable of generating a hydrodynamic cavitation zone in each said controlled flow cavitation apparatus, said at least two controlled flow cavitation apparatuses being in series; maintaining said reaction mixture in said hydrodynamic cavitation zone in each of said at least two controlled flow cavitation apparatuses for less than 1 second, and maintaining a pressure differential across each said controlled flow cavitation apparatus in the range of 30 to 500 psi, wherein at least one of said fatty acids is converted into a fatty acid alkyl ester.