Tag Archive: corn
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You are browsing the tag archive for corn.
Biofuel hell
The path to hell is paved with good intentions
Consider that 20 percent of the U.S. corn crop was converted to 5 billion gallons of ethanol last year. This replaced only 1 percent of U.S. petroleum. If the entire U.S. corn crop were used, it would replace a mere 7 percent.
The energy expended to produce a gallon of corn ethanol is 40 percent greater than what is in ethanol itself.
Corn-based ethanol production receives $6 billion in subsidies.
Each gallon of ethanol requires 1700 gallons of waters and releases 12 gallons of noxious sewage effluent into the environment (farmers use ~150 lb. of nitrogen fertizlizer to raise 8700 lb. of corn/acre).
Biofuels is an interesting idea that has become a nightmare in practice. It was fun when a few farmers were powering their trucks on the waste of french fry oil. But the idea has surpassed its feasible limits.
Nice try, but time to drop it.
Biofuel mean a lot of bull.
A top ranking post today reports the following factoid:
The amount of corn it takes to produce 75 litres of ethanol– roughly a tank of fuel– is enough corn to feed one person on a 2,000-calorie-a-day diet for a year, Mr. Klein said.
But clearly we’re not all going to be just eating corn for a year. Some people actually eat meat too… so part of that corn needs to go to cows:
For every 3,000 calories in the form of corn that are fed to a cow, only 600 are returned in milk; if the meat is eaten, only 120 calories are available for human use. - Source
Put those two together, and you end up with a choice between a tank of bio-gas or 15 days of steak. Chicken is twice as efficient (per Michael Pollan) so you could have a month of poultry for the same corn cost.