Biodiesel production from waste cooking oil: A comprehensive review on the application of heterogenous catalysts

Development of sustainable energy resources is the need of present day in view of the depleting energy resources and increase in the energy demand throughout the world. On the other hand, fossil fuel combustion emits harmful pollutants like oxides of carbon, sulfur, nitrogen and particulate matters, which causes atmospheric pollution. Biodiesel as alternative fuels have various advantages over the fossil fuels such as its renewability, lesser emission of atmospheric pollutants and flexibility to produce from variety of feedstock. Waste cooking oil can be used as a potential feedstock for biodiesel production. Disposal of waste cooking oil itself an environmental challenge due to its adverse environmental…