ethanol fuel spear april 13, 2009. industrial production fermentation distillation dehydration...
TRANSCRIPT
![Page 1: Ethanol Fuel SPEAR April 13, 2009. Industrial Production fermentation distillation dehydration glucose production](https://reader036.vdocument.in/reader036/viewer/2022062304/56649e3c5503460f94b2f129/html5/thumbnails/1.jpg)
Ethanol Fuel
SPEARApril 13, 2009
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Industrial Production
fermentation
distillation
dehydration
glucose production
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Plants Make Glucose
• Photosynthesis– 6CO2 + 6H2O + light
→ C6H12O6 + 6O2
• Common sources– Corn– Sugarcane
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Fermentationglucose → ethanol
C6H12O6 → 2C2H6O + 2CO2 + heat
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Distillation & Dehydration
Removes water
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Industrial Production
fermentation
distillation
dehydration
glucose production
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Combustion
• Glucose is burned to generate heat that drives pistons
• C2H6O + 3O2 → 2CO2 + 3H2O + heat
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Overall Reaction
light → heat
renewable energy source!
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Ethanol-Only Engines
• Comparable fuel economy• Pure ethanol-only engines cannot use
gasoline• Max blend = E85 (85% ethanol, 15%
gasoline)
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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
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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
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Problems and Solutions
• Tariff restricts importing cheaper ethanol
• Sen. Gregg & Sen Feinsteinn introduced measure to remove tariff– Importing cheaper ethanol would lower
price further
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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
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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