Biofuel- Ethanol Basics



ETHANOL FUEL BASICS
Ethanol is a renewable fuel made from various plant materials collectively known as “biomass.” Nearly 97% of U.S. gasoline contains ethanol, typically E10 (10% ethanol, 90% gasoline), to oxygenate the fuel and reduce air pollution…Read more>>    afdc.energy.gov

 

ETHANOL: WHAT IS IT?
Ethanol is a grain alcohol that can be blended with gasoline and used in motor vehicles. Many gasoline stations provide a blended fuel, which typically is 10 percent ethanol and 90 percent gasoline. Vehicles do not need… Read more>> web.extension.illinois.edu

 

Fuel Properties
Ethanol (CH3CH2OH) is a clear, colorless liquid. It is also known as ethyl alcohol, grain alcohol, and EtOH (see Fuel Properties search.) Ethanol has the same chemical formula regardless of whether it is produced from…Learn more>>    afdc.energy.gov

ENERGY DENSITY
Energy Content Of Selected Fuels-  enlarge graphic and learn more>> 

BIOFUEL- ETHANOL BASIC DENSITY CHART

 

 

 

 

 

 

 

arewetoast.com

 

 

Ethanol Made From Corn And Other Crops
Ethanol can be fermented from many sources of starch, including corn, wheat, grain sorghum, barley, and potatoes, and from sugar crops such as sugar cane and sweet sorghum. Because there has been… Read more>>   web.extension.illinois.edu

 

Cellulosic Ethanol
Ethanol can also be produced by breaking down cellulose in woody fibers. Cellulosic ethanol is considered an advanced biofuel and involves a more complicated production process than the process used to make conventional ethanol.

Trees and grasses are potential feedstocks… Read more>>  eia.gov/energyexplained

 

DEFINITION
EROEI= energy returned on energy invested
EROI= energy return on investment

 

EROI ratio
eroi                  fuel
1.3                  Ethanol corn
1.3                  Biodiesel
1.6                  Solar collector
1.9                  Solar flat plate
3.0                  Bitumen tar sands
5.0                  Shale oil
5.0                  Ethanol sugarcane
6.8                  Photovoltaic
8.0                  Oil discoveries
10.0                Nuclear (with diffusion enrichment)
10.0                Natural gas 2005
12.0                Oil imports 2007
14.5                Oil and gas 2005
18.0                Oil imports 2005
18.0                Wind
20.0                Oil production
30.0                Oil and gas 1970
35.0                World oil production
35.0               Oil imports 1990
50.0                Nuclear (with centrifuge enrichment, with fast reactor or thorium reactor)
80.0                Coal
85.0                Natural gas 2013
100.0              Hydro

 

 

ETHANOL AS A TRANSPORTATION FUEL

Ethanol Is Once Again Used To Fuel Automobiles
Ethanol use increased temporarily during World War II when oil and other resources were scarce. In the 1970s, interest in ethanol as a transportation fuel was revived as oil embargoes, rising oil prices, and growing dependence on imported oil increased interest in alternative fuels. Since that time,… Read more>>   web.extension.illinois.edu

BIOFUEL- ETHANO LGAS PUMP E15E85 Most of the gasoline now sold in the United States contains some ethanol. The exact amount varies by region. In general, the ethanol content of motor gasoline does not exceed 10% by volume. Gasoline with 10% ethanol content is referred to as…Learn more>> eia.gov

E10 and E15
E85

Flexible fuel vehicles-  Read more>>

 

ETHANOL IS NONTOXIC AND BIODEGRADABLE
Unlike gasoline, pure ethanol is nontoxic and biodegradable, and it quickly breaks down into harmless substances if spilled. Chemical denaturants… Read more>>      eia.gov/energyexplained

 

ETHANOL CAN REDUCE POLLUTION
…Ethanol can be considered carbon-neutral because the plants used to make fuel ethanol (such as corn and sugarcane) absorb carbon dioxide (CO2) as they grow and may offset the CO2 produced when ethanol is made and burned. In the United States,…Read more>>  eia.gov

 

THE TRUTH ABOUT ETHANOL
ucsusa.org

What is ethanol?
Ethanol is a key ingredient in today’s gasoline—but the promise of ethanol as an oil and climate solution depends on how it’s made and what it’s made from...Learn more>>

BIOFUEL- ETHANOL BASIC PUMP UCS  Read more>>

Ethanol use today: room for improvement.

BIOFUEL ETHANOL BASIC ROOM TO IMPROVE  Read more>>

Is ethanol clean? It depends.

BIOFUEL- ETHANOL BASIC CLEAN  Read more>>

Sustainable production is possible.

biofuel- ethanol basic sustainable ucs  Read more>>  ucsusa.org

 

CELLULOSIC ETHANOL AND IT’S FUTURE

BIOFUEL- CELL ETHANOL  Cellulosic ethanol is ethanol made from cellulose, a non-grain material/feedstock that provides the cellular structure for all plants. The end product – a clean-burning, high-octane fuel – is the same as ethanol made from corn.  Cellulose, which provides the cellular structure for all plants, is the world’s most abundant organic compound….Read more>>  poet.com