Biofuels are fuels produced from organic wastes or through various processes from biomass and as it is a renewable energy source it plays an important role in reducing carbon dioxide emissions. There are generally four generation of biofuels:
· First-generation biofuel
· Second-generation biofuel
· Third-generation biofuel
· Fourth-generation biofuel
The different types of biofuels are Biogas, Ethanol, Biodiesel, Green diesel and syngas.