09476009 cites 20 patents.

The present invention provides a method of producing fatty acid alkyl esters from a lipid, comprising steps of introducing a gas comprising vapor of an alcohol selected from methanol, ethanol, 1-propanol, iso-propanol and butanols, into the lipid in a form of bubbles to enable the bubbles to pass through the lipid and be discharged from the lipid. The product may then be subjected to a transesterification process catalyzed by a base catalyst. The present invention is robust with low quality feedstocks thus significantly reduce production cost for biodiesel.

Title
Acidic methanol stripping process that reduces sulfur content of biodiesel from waste greases
Application Number
14/690909
Publication Number
9476009 (B2)
Application Date
April 20, 2015
Publication Date
October 25, 2016
Inventor
Colin James Stacy
Beaumont
TX, US
Megan Elizabeth Hums
Philadelphia
PA, US
Richard Allan Cairncross
Media
PA, US
Agent
Mendelsohn Dunleavy P C
Assignee
Environmental Fuel Research
PA, US
Drexel University
PA, US
IPC
C07C 67/08
C11C 3/10
C11C 3/00
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