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Biofuels and Carbon Neutrality

AQA AS-level ChemistryAlcoholsLesson 6 of 13

A biofuel is a fuel produced from biomass (recently living material). Bioethanol is ethanol made by fermenting sugars from crops such as sugar cane, and it can be used as a fuel for cars, often blended with petrol.

An activity is carbon neutral if it has no net annual carbon (greenhouse gas) emissions to the atmosphere. Bioethanol is claimed to be carbon neutral because the carbon dioxide released when it is made and burned was recently absorbed from the air by the growing plants.

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