Gasohol called environmentally unfriendly

Sept. 18, 2003
The U.S. Senate recently passed an energy policy bill that doubles the amount of corn-based ethanol in American gasoline. But, Cornell University professor of ecology David Pimentel claims drivers who fill their tanks with gasohol - a blend of gasoline and corn-based ethanol - are getting a product that is inefficient and environmentally harmful.


According to Pimentel, gasohol delivers poorer mileage per gallon than gasoline. And some $1.4 billion in subsidies that help make ethanol production profitable for agribusiness firms comes out of taxpayers' pockets. Finally, the National Center for Policy Analysis figures ethanol production adds more than $1 billion to the cost of raising beef. This, says Pimentel, is because corn feedstock for ethanol cuts into the overall corn supply, adding about two cents per bushel to the price corn farmers receive. "Because nearly 70% of corn grain is fed to U.S. livestock, doubling or tripling ethanol production can be expected to further increase corn prices for beef and livestock producers and ultimately increase costs for consumers," says Pimentel.

Corn farming takes a considerable toll on the environment, causing more soil erosion and requiring more insecticides, herbicides, and nitrogen fertilizer than any other crop. And, says Pimentel, every gallon of ethanol produced results in 13 gallons of effluent pollution. "Most of us wouldn't mind paying a premium for a homegrown fuel that's truly efficient, environmentally friendly, and renewable. But corn is none of those," says Pimentel. Making a gallon of ethanol from corn requires 29% more energy from fossil fuels than a gallon of ethanol can provide.

 

Sponsored Recommendations

Sept. 16, 2025
From robotic arms to high-speed conveyors, accuracy matters. Discover how encoders transform motor control by turning motion into real-time datadelivering tighter speed control...
Sept. 16, 2025
Keep high-torque gearboxes running efficiently with external lubrication and cooling systems delivered fast. Flexible configurations, sensor-ready monitoring, and stocked options...
Sept. 16, 2025
Now assembled in the U.S., compact P2.e planetary gear units combine maximum torque, thermal efficiency, and flexible configurations for heavy-duty applicationsavailable faster...
Aug. 22, 2025
Discover how to meet growing customer demands for custom products without overextending your engineering team. Learn how scaling your automation strategy can help you win more...

Voice your opinion!

To join the conversation, and become an exclusive member of Machine Design, create an account today!