Biofuels

Crops

________ need area and so does biofuel, so decrease agricultural food output.

Ethanol

________ is distilled (water removed) so it can be converted to biofuel that is purified and ready to use.

Yeast

________ is used to produce large amounts of ethanol that diffuses out of the cells.

Biofuels

________ are made form biomass (plant or animal material)

Bioethanol

fermentation of plant sugars

Biodiesel

animal fatty acids or vegetable oils

1. deconstruction

breakdown of biomass to increase surface area = more efficient process. Either physically or chemically

2. digestion by enzymes

further exposure to enzymes to break down starch and cellulose, water is added (hydrolysis)

3. ethanol fermentation

yeast is used to produce large amounts of ethanol that diffuses out of the cells

4. purification

ethanol is distilled so it can be converted to biofuel.