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[9] [10] If no land-use change is involved, first-generation biofuels can—on average—have lower emissions than fossil fuels. [9] However, biofuel production can compete with food crop production. Up to 40% of corn produced in the United States is used to make ethanol [101] and worldwide 10% of all grain is turned into biofuel. [102]
Once they're made, experts say, biofuels have advantages over pure fossil fuels by contributing little to no emissions at the tailpipe. The same can't be said of the gasoline and diesel they are ...
Biodiesel currently has 3% of the diesel market in Germany and is the number 1 alternative fuel. [17] The German government has a Biofuels Roadmap in which they expect to reach 10% biofuels by 2010 with the diesel 10% coming from fuel made from vegetable oil. [18] From 2005 to 2007 a number of types of vegetable oil have doubled in price.
Alternative fuels, also known as non-conventional and advanced fuels, [1] are fuels derived from sources other than petroleum. [2] Alternative fuels include gaseous fossil fuels like propane, natural gas, methane, and ammonia; biofuels like biodiesel, bioalcohol, and refuse-derived fuel; and other renewable fuels like hydrogen and electricity. [3]
Next-generation biofuels promise a practical way to replace gasoline or diesel without expensive batteries. The reality is that next-generation biofuels have had limited success so far. Still, the ...
Biofuels have a limited ability to replace fossil fuels and should not be regarded as a 'silver bullet' to deal with transport emissions. Biofuels on their own cannot deliver a sustainable transport system and so must be developed as part of an integrated approach, which promotes other renewable energy options and energy efficiency , as well as ...
[1] [2] Conversion of biomass to liquid fuels is preferred as an alternative to the extraction of fossil fuels because biomass removes carbon dioxide from the atmosphere as it grows through photosynthesis. When combusted, this carbon is re-released into the atmosphere, closing the carbon cycle and making biofuels carbon neutral under some ...
Substitutional fuels are fuels that can replace, either partially or completely, conventional fuels. It includes biodiesel , biogas , alcohol , myco-diesel , algal fuel , and metal fuel . They have applications to replace conventional fuels in functions such as transportation, although they still compose a small proportion of global fuel sources.