Waste animal fats as feedstock for biodiesel production using non-catalytic supercritical alcohol transesterification: A perspective by the PRISMA methodology

Global warming and fossil fuel depletion have boosted the search for alternative renewable fuels with a low environmental impact. Biodiesel exhibits many advantages over conventional diesel including possibility of being produced from sources such as waste oils fats. Specifically, animal fats are receiving increased attention an to vegetable biodiesel production. This low-cost feedstock allows mitigation pollution can also improve features by increasing cetane number enhancing oxidative stability. Among different technologies available production, supercritical processes offer important catalytic transesterification in terms process efficiency reaction time. According interest research articles published this field last years, work focuses on systematic review technology using Systematic Reviews Meta-Analysis (PRISMA) methodology. describes state art non-catalytic production discusses key aspects type fat used, operation variables time, temperature, solvent excess, pressure, final properties synthesized biodiesel.