Biofuels are renewable resources that help reduce carbon dioxide and other gas emissions into the atmosphere. During the growth phase, plants use carbon dioxide from the atmosphere. The biomass is then converted into biofuels and burned in motor vehicles. Numerous life-cycle assessments of biofuels have confirmed that their use will definitely reduce carbon dioxide emissions. Biofuels also bring benefits by reducing unwanted emissions from car exhausts by up to 80%. Through combustion, biofuels lead to fewer emissions of unwanted products such as unburned hydrocarbons and carbon monoxide.

                Biodiesel has gained worldwide recognition as an alternative and renewable energy source for the transport sector because of its many benefits, advantages and applications. The molecules in Biodiesel are simple hydrocarbon chains that do not contain sulphur or toxic cyclic and polycyclic compounds like those found in fossil fuels. Biodiesel reduces the risk of local emissions of soot, particulate matter, carbon monoxide, hydrocarbons, etc. compared to conventional fossil fuels. Biodiesel contributes to reducing greenhouse gas emissions and therefore reduces the risk of climate change and also has superior lubricating properties.Biodiesel can be used at 100% concentration as a replacement for diesel or can be used in a blend with diesel in any proportion without the need for engine modifications.

Biodiesel production has grown rapidly worldwide due to the many environmental and economic advantages that this alternative fuel can have over similar petroleum-based fuels.

             In Romania, biofuels are obtained by processing rapeseed, maize, sunflower, soya and waste vegetable oil.