Water Worries Cloud Future For U.S. Biofuel
Date: 14-Apr-09
Country: US
Author: Carey Gillam
Water Worries Cloud Future For U.S. Biofuel Photo: Mark Blinch
A process operator shows a handful of corn at the
GreenField Ethanol plant in Chatham, Ontario, April 10, 2008.
Photo: Mark Blinch
KANSAS CITY - It's corn planting time in the U.S. Plains, and that means
Kansas corn farmer Merl "Buck" Rexford is worrying about the weather -- and
hoping there is enough water.
Rexford plans to start seeding his 7,000 acres near Meade, Kansas, this week
and he is relishing a recent heavy snow storm that dropped several inches of
much-needed moisture.
Like corn farmers throughout the United States, Rexford hopes to grow a
healthy crop yielding more than 150 bushels an acre this year. Much of his
crop will wind up at a nearby ethanol plant.
And that puts the 65-year-old Rexford at the center of a bitter divide over
biofuels, particularly corn ethanol.
Critics argue that precious water resources are being bled dry by ethanol
when water shortages are growing ever more dire. Federal mandates
encouraging more ethanol production don't help.
Proponents say corn ethanol for transportation fuel is far better for the
environment, national security and the economy than oil and the first step
toward cleaner fuel sources.
"We really have to ask ourselves, do we want to be driving with renewable
fuels or with gasoline made from petroleum resources," said Brent Erickson,
executive vice president at the Biotechnology Industry Organization, which
backs ethanol.
Corn ethanol's future is already muddied by concerns that it requires a
substantial amount of energy to produce and that heightened demand makes
corn more costly in human food and livestock feed. Now, with climate change
concerns mounting and drought becoming more of a problem in many areas, the
water-intensive nature of creating ethanol also is a growing concern.
"Biofuels are off the charts in water consumption. We're definitely looking
at something where the cure may be worse than the disease," said Brooke
Barton, a manager of corporate accountability for Ceres, a group backed by
institutional investors focused on the financial risks of climate change.
Corn is a particularly thirsty plant, requiring about 20 inches of soil
moisture per acre to grow a decent crop, but most corn is grown with rain,
not irrigation. Manufacturing plants that convert corn's starch into fuel
are a far bigger draw on water sources.
Water consumption by ethanol plants largely comes from evaporation during
cooling and wastewater discharge. A typical plant uses about 4.2 gallons of
water to make one gallon of ethanol, according to the Institute for
Agriculture and Trade Policy.
The ethanol industry pegs that at about 3 gallons of water to 1 gallon of
fuel.
WASHINGTON PLAN
Washington lawmakers and the White House have been encouraging the use of
ethanol as an alternative fuel to help lighten the nation's costly
dependence on foreign oil.
But the moves are meeting opposition from many groups who fear that
population growth and climate change are combining in ways that will leave
not only the United States, but the world, with too little water. Many
ethanol plants are located in agricultural areas -- close to the corn, but
also close to other users who need a lot of water to operate, such as hog
farmers and cattle ranchers.
"We're headed in the wrong direction and this problem is not going away,"
said Mark Muller, program director at the Institute for Agriculture and
Trade Policy. "This water issue is like the financial crisis... and I'm
afraid something awful is going to happen."
The group says much of the Corn Belt stretching through Iowa, Illinois,
Nebraska, Minnesota and Indiana has enough water for all, but water
availability could challenge the ethanol industry in areas including greater
Chicago, western Iowa and Nebraska, and generally west of the Missouri
River.
"Water use could be a limiting factor (for ethanol) if we don't introduce
and support more water-saving technologies, " added the Institute's Jim
Kleinschmit.
"Water is a worry," agreed Heritage Foundation senior policy analyst for
energy and environment Ben Lieberman. "When we expand corn ethanol as we
have with these federal mandates," he said, "we are starting to see corn in
more marginal areas that may need more irrigation. We are seeing increased
water use not just for the processing plants but also the water in growing
the corn."
Last month, a coalition of environmental, agricultural, business and
consumer groups asked the Obama administration not to raise the amount of
ethanol blended into gasoline without further study.
Ethanol supporters don't dispute the water-intensive nature of the industry.
But they say much of the corn crop relies on rain from the skies, not pumped
out of the ground, and even irrigation systems are improving to reduce water
usage by almost half. More water-efficient production plants are also
reducing water use. In January 2009, there were 170 ethanol plants operating
in the United States and 24 more new or expanding plants.
In 2008, the United States led the world in ethanol production, generating 9
billion gallons, or 52 percent of the world production. That is up from 6.5
billion gallons of U.S. ethanol in 2007, according to the Renewable Fuels
Association. The U.S. aims for 15 billion gallons by 2015.
THIRSTY WORLD
Freshwater consumption worldwide is expected to rise 25 percent by 2030 due
largely to world population growth from 6.6 billion currently to about 8
billion by 2030 and more than 9 billion by 2050, according to Ceres.
Some believe crop biotechnology could offer at least a partial solution, and
several companies are racing to develop corn that is drought-tolerant,
including Monsanto Co, which hopes to launch a product in 2012.
DuPont Co.'s Pioneer Hi-Bred unit plans to roll out a low-water
conventionally produced corn as early as 2010.
Back in Kansas, farmer Rexford would welcome a more drought-hardy corn seed.
Water to irrigate his crop is getting harder and more expensive to come by.
Still, farmers need the premiums selling their corn for ethanol can bring,
he said, just as much as the nation needs to break free from dependence on
foreign oil.
"If farmers go out of business you'll have a lot worse crisis than an oil
crisis," he said.
(Editing by Peter Henderson and Cynthia Osterman)
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