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I sat down and looked at the feasibility of ethanol as a replacement for gasoline and diesel several years ago. All information needed for this study is easily available by doing a quick google search and the entire thing took about 10 minutes.that Snopes piece is wrong.
ethanol has been a bust for Brazil, they can't feed their people because all the corn is going into making fuel.
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we could export a lot more coal to china
I started by looking up the amount of fuel used the previous year in gallons. Next, I looked up the number of bushels of corn required to produce a gallon of ethanol. Then I looked up the average yield per acre for corn.(this one varies quite a bit due to climate but you can still come up with an average that is suitable for this exercise)
Using that basic information I was able to determine that if you just wanted to replace gallons of gasoline/diesel with the same number of gallons of ethanol you would have to have a cornfield that stretched from Minneapolis, MN south to Dallas, TX then west to San Diego, CA north to Seattle, WA and then east back to Minneapolis.
This study doesn't account for the fact that you need to burn about 20% more ethanol to get the same energy as gasoline/diesel and it also doesn't take into consideration the INCREDIBLE amount of fuel it would take to plant, maintain, harvest, process, and transport all of this corn in the first place.
Ethanol is a DEAD END. Why in the hell are we being teased with it in the first place?