Much has been argued about the water budget for ethanol production. The industry argues that it's not that bad - a mere 3 to 4 gallons of water for every gallon of ethanol. Well, like everything else, it depends on what you account for. The way I figure it... Corn in our area (Northwest Kansas) will take an average of 150 AF of water to grow an average of 225 bushels on a 120 acre circle - a very typical arrangement - here.
The GAO says it requires 7-321 gallons of water per gallon of corn ethanol, but when it comes to second generation biofuels, we have very little good data. Photo: Don O'Brian via flickr By this point the water intensity of using fir... Read Post
In the case of corn, it takes 2,500 gallons of water to grow enough corn to produce 1 gallon of ethanol. That's right, 2,500 gallons. ... Read Post