Biodiesel from grease interceptor to gas tank

The need for sustainable biofuels has initiated a global search for innovative technologies that can sustainably convert nonfood bioresources to liquid transportation fuels. While 2nd generation cellulosic ethanol has begun to address this challenge, other resources including yellow and brown grease are rapidly evolving commercial opportunities that are addressing regional biodiesel needs. This review examines the technical and environmental factors driving the collection of trap FOG (Fats, Oils, and Greases), its chemical composition and technologies currently available and future developments that facilitate the conversion of FOG into biodiesel. Most developed and developing nations require the collection and proper disposal of trap sewer fats, oils and greases (FOG). This bioresource is a valuable feedstock for biodiesel and this review highlights the chemical constituents of this source of FOG and how it can be processed into biodiesel now and in the future.