Claim 5

1
Claim 5

• Biodiesel produces as much or more emissions of
  carbon dioxide, compared to
• petroleum diesel, and therefore is not any
  greener than petroleum diesel.

Jason Salazar, Andrew Peabody, Tram Nguyen,
Samantha Tanner
2
Overview

• Compare the emission of carbon dioxide in
  combustion of petrodiesel and biodiesel.
• Decide whether biodiesel is in fact greener
  than petrodiesel.
• Compare the lifecycle of carbon dioxide emissions
  in petrodiesel and biodiesel.

3
Definitions of greener

• Beneficial to the environment green recycling
  policies.
• Favoring or supporting environmentalism green
  legislators who strengthened pollution controls.

The American Heritage Dictionary of the English
Language, Fourth Edition.
4
Petrodiesel Combustion

• 2C12H26 37O2 ? 24CO2 26H2O E
• 340g petrodiesel ? 1060g carbon dioxide
• 1g petrodiesel ? 3g carbon dioxide

5
Petrodiesel Combustion

• 2C12H26 37O2 ? 24CO2 26H2O E
• 340g petrodiesel ? 1060g carbon dioxide
• 1g petrodiesel ? 3g carbon dioxide

6
Biodiesel Combustion

• C20H36O2 29O2 ? 20CO2 18H2O E
• 310g Biodiesel ? 880g Carbon Dioxide
• 1g Biodiesel ? 3g Carbon Dioxide

7
Biodiesel Combustion

• C20H36O2 29O2 ? 20CO2 18H2O E
• 310g Biodiesel ? 880g Carbon Dioxide
• 1g Biodiesel ? 3g Carbon Dioxide

8
Petrodiesel vs. Biodiesel

• 1g of either petrodiesel or biodiesel both create
  about the same amount of carbon dioxide at
  3grams.
• Carbon dioxide is among the least effective (at
  heat trapping) of the greenhouse gases.

9
Global Atmospheric Concentration of Greenhouse
Gases (1992)
Intergovernmental Panel on Climate Change, 1996.
10
Photosynthesis
11
Photosynthesis

• 6CO2 12H2O light ? C6H12O6 6O2 6H2O
• Carbon Dioxide Water Light energy ? Glucose
  Oxygen Water

12
Net CO2 Life Cycle Emissions
NREL, 1998.
13
References

• The American Heritage Dictionary of the English
  Language, Fourth Edition.
• An Overview of Biodiesel and Petroleum Diesel
  Life Cycles. National Renewable Energy
  Laboratory, 1998.
• Wikipedia The Free Encyclopedia. 23 Oct. 2005.
  Wikimedia Foundation. 23 Oct. 2005
  lthttp//en.wikipedia.orggt.
• Intergovernmental Panel on Climate Change,
  Climate Change 1995 The Science of Climate
  Change Cambridge, UK Cambridge University Press,
  1996.
• Campbell, Biology 7th Ed. New York Benjamin
  Cummings, 2004.
• 18 Nov. 2006 http//www.wiseenergy.ca/index_files/
  biodiesel.htm
• 27 Nov. 2006 http//chemfinder.cambridgesoft.com

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