Biofuels

Glycolysis

________ breaks down sugars to produce ethanol.

Algae

________ is also being used to create biodiesel.

high levels of triglycerides

Many microalgae produce ________ that can be readily converted into biodiesel.

Feed to fuel ethanol

aka convention grain based ethanol

Conventional Ethanol

starch from grain is easily broken down to sugars, which are fermented using yeast, to produce ethanol.

Cellulose Ethanol

Starts with hemicellulose, lignin, and cellulose, using acid/enzymatic hydrolysis to convert the compounds into fermentable sugars

Gasoline

This is a hydrocarbon octane (C8H18), or in automobiles use iso- octane which is 2, 2, 4, methyl-pentane.

85% ethanol, 15% gasoline

E85

10 cents

Adding ethanol to gasoline can decrease the cost per gallon up to

Hybrid Vehicles

fueled by gas and a battery to increase efficiency

Cellulose ethanol

________ is made using corn stover (stem, leaves after the cobs have been harvested), sawdust, paper pulp, and plants that are grown specifically for ethanol production like switch grass and Miscanthus.

Ethanol

________ made from sugarcane is the only sustainable form.

Oil reserves

________ are formed from photosynthetic organisms that lived in the Carboniferous era, 300 million years ago.

soybeans

In the US most biodiesel is made from?

Corn ethanol

________ produces 10 % more energy than is required to convert the corn to fuel.

Biodiesel

________ is a vegetable oil product.

Gasoline

Fuel labeled E85, would contain 15% of what?

Soybeans

Out of corn, soybean, Miscanthus, sugarcane, which is most likely to be used as a source of biodiesel?

Energy returned on Energy Invested

What does EROEI stand for?