Biofuel Defined
-Produced from living organisms and organic food waste products
-Must contain over 80% renewable materials
-Can be referred to as a solar energy source (because of photosynthesis)

Biofuel Classifications
1-Biodiesel: oil, canola oil, waste grease, animal fat
2-Ethanol: corn, sugar cane, sugar beets
3-Cellulosic Ethanol: switchgrass, woody biomass, biomass residue

1-Corn Ethanol
  • The leading producer for corn is the US, which produced 4.86 billion gallons in 2006
  • The production price in the US is $1.09 per gallon
  • In the US retail price for gasoline is $3.03 however, for ethanol it is $2.62

2- Cane Ethanol
  • The leading producer for cane ethanol is Brazil, which produced 3.96 billion gallons in 2006
  • The production price in Brazil is $0.87 per gallon
  • In 2005 Brazil the retail price for gasoline is $4.91 however, for ethanol it is $2.92

3-Biodiesel
  • The leading producer for biodiesel (from canola oil) is Germany
  • In Germany the retail price per gallon in 2007

Corn into Ethanol
  • process_2.jpg
  • The process of refining corn into ethanol has been improved to increase efficiency and reduce emissions since the 90's

Corn needs an abundant amount of herbicide and nitrogen fertilizer, which can lead to more soil erosion than any other crop.

To produce corn ethanol, the consumption is basically equal to the amount of fossil fuels as ethanol.

Environmentalists fear that the rising prices on the crops will force the farmers to plow into marginal farmland, thus taking the land and soil used in wildlife conservation. Risking more carbon in the fallow fields.

If we converted all the corn and soybean crops into biofuels, it would replace only 12% of gasoline and only 6% of diesel, while putting a strain on our supplies of corn and soy- fattened beef, pork, and poultry.



Liquid fuel from Algae
Gallons or oil per acre per year

Corn-18
Soybeans-48
Safflower-83
Sunflower-102
Rapeseed-127
Oil Palm-635
Micro Algae-5,000-15,000
  • Small scale production: allow farmers to produce own fuels
  • Large scale production: More efficient
  • Algae grows more rapid therefore we are able to grow more per acre
Biodiesel from Algae
Biodiesel from Algae



Pro:
-better for environment
-less harmful emissions
-can produce more energy than other sources

Cons:
-Use more energy to produce than comes from it
- not as easily obtainable
- expensive




Bibliography
http://www.alternative-energy-news.info/technology/biofuels/
http://www.ethanolrfa.org/resource/made/
http://ngm.nationalgeographic.com/2007/10/biofuels/biofuels-interactiPr
http://www.alternative-energy-news.info/carbon-dioxide-liquid-fuel-bacteria/
http://www.oakhavenpc.org/cultivating_algae.htm