While renewable diesel and biodiesel production is projected to increase over the next several years, feedstock supplies are limited by mature markets for yellow grease and refined vegetable oils- Brown grease refers to organic fats, oils, and greases extracted from wastewater residuals- Brown grease has the potential to alleviate the shortage of biofuel feedstock, but it is dirty, inconsistent in composition and higher in contaminants that make meeting specifications for on-road diesel fuel difficult- Brown Grease is primarily free- fatty-acids, which are suitable for biofuel production and have been thoroughly studied for over a century- Brown grease has often been considered for biofuel production but problems with purification and highly-variable composition have yet to be overcome- The novel approach in this project involves upgrading brown grease into pure free fatty acids, which then can be readily used by biodiesel or renewable diesel companies for fuel production-
