METHOD FOR FRACTIONATING GREASE TRAP WASTE AND USES OF FRACTIONS THEREFROM

摘要

A process for producing unsaturated and saturated free fatty acid from trap oils, trap greases, brown greases and grease trap waste as starting material . The process consist in subjecting the starting material to a pretreatment, a first purification step, a fractionation step, a second purification step an d eventually a hydrogenation step. Methyl esters of unsaturated and saturated free fatty acids, oleic acid and stearin is obtained from this process.