Used animal fats and vegetable oils from meat processing plants and food servers can be converted into biodiesel, which may be used in a standard combustion engine without modifications and may be blended with petroleum diesel to improve its quality.
Based on a study conducted by researchers from the Aklan State University (ASU), these wastes produce a clear liquid without unpleasant smell with the same properties as mineral fossil diesel oil.
ASU researchers said that an engine fueled by a mixture of 80% petroleum diesel and 20% biodiesel had lesser smoke emissions and lower engine noise compared to that fueled by pure petroleum diesel.