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

 

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

BIOFUEL- ETHANOL BASIC DENSITY CHART

 

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

 

Ethanol Made From Corn And Other Crops

… The most common ethanol production processes today use yeast to ferment the sugars and starch in corn. Corn is the main ingredient for fuel ethanol in the United States because of its abundance and low price. Most ethanol is produced… 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>>  web.extension.illinois.edu

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

 

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

 

EROEI as a Measure of Biofuel Effectiveness

…The list includes conventional and unconventional energy resources and I must add that not all “experts” agree with these EROEI values or even what makes up EROEI calculations…Read more>>  peakoil.com 

BIOFUEL- ETHANOL EROI CHART

Hydrogen EROEI of 0.5:1

Corn Ethanol EROEI of 1.2:1

Oil Sands EROEI of 2:1

Corn Biodiesel EROEI of 3:1

Geothermal EROEI of 3:1

Switch Grass Cellulosic Ethanol EROEI of 4:1

Solar thermal EROEI of 4:1

Nuclear EROEI of 5:1

Sugar Cane Ethanol EROEI from 8.3:1 to 10.2:1

Solar PhotoVoltaic EROEI of up to 9:1

Coal EROEI of up to 10:1

Natural Gas EROEI of 10:1

Hydropower EROEI of 12:1

Wind EROEI of 19:1

Oil Conventional EROEI currently estimated average 25:1 but declining.  Read more>>  peakoil.com

 

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 starch- and sugar-based feedstocks, such as… Read more>>  afdc.energy.gov

ETHANOL AS A TRANSPORTATION FUEL

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