Biodiesel production from waste cooking oil using ionic liquids as catalyst

Abstract Biodiesel from waste cooking oil (WCO) can be used successfully in raising the cost of raw materials and in addressing the waste oil disposal issue. Biodiesel can be produced from WCO using ionic acid as a catalyst. Alkaline-based catalysts are commonly used to catalyze transesterification reactions. Still, direct use of WCO is not possible practically because WCO containing high free fatty acids due to layer isolation and saponification issues. The WCO may be used as a raw material for biodiesel processing, explaining their various fatty acids. The catalyst reused with high-yield output and their physicochemical properties is correlated with existing standards. This transesterification reaction's kinetic study is evaluated and followed the first-order reaction mechanism. The usage of biodiesel from WCO utilizing ionic liquids as a catalyst is discussed here.