Biofuels
Download
1 / 23

Biofuels - PowerPoint PPT Presentation


  • 117 Views
  • Uploaded on

Biofuels. Developed by Beth Morgan Dept. of Plant Biology. Corn stover. Miscanthus. Hybrid poplar. Sugar cane bagasse. Switchgrass. Types of Biofuel: Ethanol. Ethanol can be produced using:. Biggest Suppliers. Increase in Production. Making Ethanol From Seed.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' Biofuels' - zachery-holden


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
Biofuels
Biofuels

Developed by Beth Morgan

Dept. of Plant Biology


Types of biofuel ethanol

Corn stover

Miscanthus

Hybrid poplar

Sugar cane bagasse

Switchgrass

Types of Biofuel: Ethanol

Ethanol can be produced using:




Making ethanol from seed
Making Ethanol From Seed

1. Grow and collect grain.

2. Grind kernels into meal.

3. Heat and enzymes convert starch to sugar.

4. Anaerobic respiration by yeast.

5. Alcohol (ethanolº is distilled out of mixture.

Ethanol




Making ethanol from cellulosics
Making Ethanol From Cellulosics

1. Collection, storage & transportation to refinery.

2. Dirt & debris removed from material and then shredded into small particles.

3. Heat, pressure or acid treatment. Enzymes in solution are used to breakdown cellulose, hemicellulose to sugars. Lignin is removed.

4. Syrup of sugars is filtered from solids.

5. Anaerobic fermentation by bacteria to produce alcohol (and carbon dioxide).

6. Further enzymatic breakdown of cellulose and lignin.

7. Anaerobic fermentation by bacteria to produce alcohol (and carbon dioxide).

8. Alcohol is distilled.

9. More water removed.

10. Stored for distribution and use.


Types of biofuel biodiesel

Algae

Jatropha tree

Palm oil

Camelina

Types of Biofuel: Biodiesel

Bio-diesel can be produced using:


Making biodiesel

Waste Vegetable Oil

Lye

Methoxide

Methanol

Washed Biodiesel

Methoxide

Water

Biodiesel

Biodiesel

WVO

Glycerin

Washed Biodiesel

Water

Making Biodiesel

Biodiesel




Pros energy yield1
Pros: Energy Yield

For every unit of fossil energy used in the entire biodiesel production cycle, 3.2 units of energy are gained when the fuel is burned, or a positive energy balance of 320 percent.


Pros energy yield2
Pros: Energy Yield

(gain is from photosynthesis)


Pros reduced emissions
Pros: Reduced Emissions

Emissions of major air pollutants from diesel engines





Soil fertility

Poplar trees

Switchgrass harvest in the Netherlands

Soybean harvest

Soil Fertility




ad