Obtaining Biodiesel from Fat Extracted from Solid Waste Produced in the Fleshing Stage of Leather Manufacturing

Tallow is produced in leather manufacturing, particularly the fleshing stage. It contains large amounts of fat, which, most industrial plants, pollutes water and soil due to poor disposal. In order take advantage this solid waste, chemical processes have been applied transform fats extracted from tallow into biodiesel. work, an extraction technique involving non-polar solvents pressurized at 15 psi. With gasoline, a 51,0% fat recovery was obtained. The quality determined by analyzing density, viscosity, melting point, moisture, acidity, peroxides, saponification, iodine indices. Biodiesel obtained via transesterification reactions with methanol sodium hydroxide. content methyl esters reaction characterized means gas chromatography coupled mass spectrometry, where palmitic oleic fatty acids were identified as major components.