Biofuel is produced to cut the amount of oil burnt for energy, reducing carbon dioxide emissions. The fuels are created from normal biomass, which can include agricultural crops and waste food.
There are two main types of biofuel: bioethanol and biodiesel. Fermentation creates the alcohol for bioethanol, made from sugar crops such as corn.
Meanwhile, biodiesel is a substitute for normal diesel and made from vegetable oils and animal fats. It’s the most common biofuel in Europe and produced through transesterification.