Biodiesel production from Jatropha oil using KOH/calcined waste animal bones.
Calcinations of the waste animal bones led to increased catalytic activity maximum yield of 96.10% is attained after 3 h.
Calcination up to 900 °C enhanced the catalyst activity and beyond this temperature calcined bones showed low activity.
The catalyst could be reutilized up to 4 times without losing much activity.
The produced biodiesel meets ASTM standard limits.