Energy in the Future series: Biofuels and sustainability
Biofuels are fuels that are produced from biomass (organic materials) such as plant materials and animal waste, to substitute conventional fuels for transportation purposes. Biomass, can be converted to biofuel in three ways – thermal conversion, chemical conversion, and biochemical conversion.
Biofuels are typically grouped based on their fuel source. First-generation biofuels are produced directly from food crops, second-generation biofuels use non-food-based biomass sources such as crop waste, and third-generation biofuels use crops that are specifically grown and designed for the creation of biofuels such as algae and bacteria.