What is the difference between ethanol and biodiesel?

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What is the difference between ethanol and biodiesel?



Ethanol:


  • Energy crops such as sugarcane are grown to be fermented to produce ethanol, a fuel that can be used in automobiles 
  • Brazil produces about 12 billion liters of ethanol per year which equals 60% of the fuel used for the nation's cars or about 15% of the total use of petroleum
  • Example - alcohol produced by corn, potato, sugar, wheat, etc. 


Biodiesel:

  • Renewable, and clean burning energy source
  • Made from a mix of feedstocks.
  • Recycled cooking oil, soybean oil, and animal fats. (and algae)
  • It can be used in only diesel engines without modifications
  • Biodiesel reduces greenhouse gas emissions by at least 57 percent and up to 86 percent compared to petroleum diesel.
  • Reduces lot of pollution from big trucks which use petroleum diesel.

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