Perspective of Biofuels from Wastes

Abstract

n the world today, with an everyday increase in global population, transitioning the society to a more sustainable atmosphere would be the only solution for guaranteeing a long-lasting life in this planet. Despite the fact that the earth is armed with various natural resources, it should be accepted that they would not last forever. By converting useless wastes and residues to a new source for supplying energy rather than wasting the existed energy for their disposal, not only the concerns for the depletion of fossil fuels would be reduced but also the environment dares to breathe. Concerning this issue, the present chapter has tried to depict a clearer perspective for waste-based biofuels which are known as second-generation ones. The discussed products in this chapter are biodiesel, bioethanol, biobutanol, biogas, and biohydrogen. The focus is mostly on new researches which have introduced new waste as feedstock and their usage feasibility, though production processes and challenges ahead are included as well.