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Biofuels are available at ever larger scale. Several countries have opened refueling stations. This review will analyze the concept of a biofuel in more details and try to summarize the pros and cons objectively. Some consider biofuels the ultimate solution to fight climate change and high oil prices, but is this a realistic view?
Vegetable oil, made of e.g. rapeseed or sunflower oil, is an alternative for diesel. Gasoline can be substituted by bio-ethanol, produced from sugar cane or wheat. Both diesel and gasoline can be mixed with vegetable oil or bio-ethanol. For example, all Shell gasoline contains two percent bio-ethanol, while Argos' five percent is even higher. The European Union has mandated that by 2010 5.75% of all transport fuels should be biofuels. Most cars can handle a share of 7 -10% biofuels without any further investment. Some countries, such as Belgium, are ahead of the EU legislation and have mandated a 2.5 percent biodiesel share.
