Biofuel.

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Presentation transcript:

Biofuel

What is Biofuel? Biofuel is a fuel that is made from biomass (plant material). Biofuel is being heavily researched and refined as it emits significantly less carbon dioxide than fossil fuels.

Types of Biofuel - Ethanol Ethanol (ethyl alcohol) is produced from plants and plant waste, most commonly from sugarcane, corn, and switchgrass. A small amount exists in today’s gasoline to limit emissions released from automobile exhaust systems.

Types of Biofuel - Biodiesel This is a diesel-type fluid that is from vegetable oil extracted from soybeans, rapeseeds, sun flowers, oil palms, and jatropha shrubs. Fuel can also be processed from vegetable oils from restaurants.

Advantages and Disadvantages? Reduced CO2 emissions for some crops Med. Net energy yield for biodiesel from oil palms Med. Net energy yield for ethanol from sugar cane Fuel crops can compete w/ food crops for land & raise food prices Fuel crops cam be invasive species Low net energy yield from ethanol and biodiesel from soybeans Higher CO2 emissions from corn ethanol