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Ethanol Fuel - PowerPoint PPT Presentation


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Ethanol Fuel. SPEAR April 13, 2009. Industrial Production. glucose production. fermentation. distillation. dehydration. Plants Make Glucose. Photosynthesis 6CO 2 + 6H 2 O + light → C 6 H 12 O 6 + 6O 2 Common sources Corn Sugarcane. Fermentation. glucose → ethanol

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ethanol fuel

Ethanol Fuel

SPEAR

April 13, 2009

industrial production
Industrial Production

glucose production

fermentation

distillation

dehydration

plants make glucose
Plants Make Glucose
  • Photosynthesis
    • 6CO2 + 6H2O + light → C6H12O6 + 6O2
  • Common sources
    • Corn
    • Sugarcane
fermentation
Fermentation

glucose → ethanol

C6H12O6 → 2C2H6O + 2CO2 + heat

industrial production6
Industrial Production

glucose production

fermentation

distillation

dehydration

combustion
Combustion
  • Glucose is burned to generate heat that drives pistons
  • C2H6O + 3O2 → 2CO2 + 3H2O + heat
overall reaction
Overall Reaction

light → heat

renewable energy source!

ethanol only engines
Ethanol-Only Engines
  • Comparable fuel economy
  • Pure ethanol-only engines cannot use gasoline
  • Max blend = E85 (85% ethanol, 15% gasoline)
problems and solutions
Problems and Solutions
  • Can’t be transported in gasoline pipeline
    • Picks up impurities
    • Increased transportation costs
  • Poet LLC and Magellan Midstream Partners LP are looking into building a 1,700-mile ethanol-only pipeline in the US
problems and solutions11
Problems and Solutions
  • Contains less energy & is more expensive than gasoline
    • High energy consumption to produce
    • Less energy  refilling the gas tank more often
  • Processing methods continuously being improved
    • Less energy to produce by new methods
    • Higher energy content ethanol & lower prices
problems and solutions12
Problems and Solutions
  • Tariff restricts importing cheaper ethanol
  • Sen. Gregg & Sen Feinsteinn introduced measure to remove tariff
    • Importing cheaper ethanol would lower price further
problems and solutions13
Problems and Solutions
  • Increased cost of food as more crops are used for ethanol instead of food
  • New source “crops” are being looked into
    • Sugarcane
    • Cellulose sources
sources more information
Sources / More Information
  • Wikipedia: “Ethanol Fuel”
    • http://en.wikipedia.org/wiki/Ethanol_fuel
  • “Ethanol: Myths and Realities”
    • http://www.businessweek.com/technology/content/may2006/tc20060519_225336.htm
  • “NH Sen. Gregg introduces measure on ethanol tariff”
    • http://www.businessweek.com/ap/financialnews/D970KG082.htm
  • “Poet, Magellan to study ethanol pipeline”
    • http://www.businessweek.com/ap/financialnews/D96V88700.htm