Is Sewage an Untapped Energy Source?

  • Who would've thought that sewage could produce electricity? The University of Toronto's David Bagley did. (photo by Davide Gugliemo)

A Toronto researcher says most communities are underestimating a potential source of cheap electricity – raw sewage. The Great Lakes Radio Consortium’s Karen Kelly reports:

Transcript

A Toronto researcher says most communities are underestimating a potential source
of cheap electricity – raw sewage. The Great Lakes Radio Consortium’s Karen Kelly reports:


University of Toronto professor David Bagley collected waste water at a North
Toronto water treatment plant. He took the sewage into his lab, dried it and
then burned the solids to see how much energy they produced. He estimates the
energy produced from sewage at three treatment plants could produce more than
100 megawatts of electricity. That could be enough to keep a small town going
for a year. But Bagley says few take advantage of this resource.


“Our measurements show that there’s enough energy that we should be able to
completely offset the electricity needed to run the plant, and have extra
left over the send back to to the grid.”


Bagley finds communities are reluctant to invest in the equipment they’d
need to convert sewage into power. But he’s hoping to to design a cheaper
and more efficient system so more people can get the most out of their sewage.


For the Great Lakes Radio Consortium, I’m Karen Kelly.

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“24 Carrot” Farmers

According to the USDA, the number of farmers’ markets in the United States has increased nearly 80 percent in the past decade, with roughly 3,100 in operation. Like many other Midwesterners, Great Lakes Radio Consortium commentator Julia King buys much of her warm-weather produce from local growers. But King thinks those farmers grow something else that might be just as important as food:

Transcript

According to the USDA, the number of farmers’ markets in the United States has
increased nearly 80 percent in the past decade, with roughly 3,100 in operation. Like
many other Midwesterners, Great Lakes Radio Consortium commentator Julia King buys
much of her warm-weather produce from local growers. But King thinks those farmers
grow something else that might be just as important as food…


Not long ago, my ten-year-old daughter gathered her allowance, dropped her coins into a
see-through, polka-dot plastic purse and journeyed with me to our local farmers’ market.
Inside the old warehouse-turned-emporium, we strolled up and down the aisles. She
sniffed bars of soap and fragrant candles, poked bags of cheese bread and gazed at
almond croissants. But it was a large butternut squash that finally caught her eye.


She smiled and pointed at the unusual treasure. The farmer behind the counter called out
a price and I watched from a distance as she dug into her little plastic purse, pulling out a
quarter here, a dime there. As she calculated the numbers, her smile faded; she was fifty
cents shy of the total.


“Oh, you go ahead and take it anyway,” he told her. “It’s a little bit old, really.”


She paused, uncertain. I stepped into view and offered a dollar to the farmer, but he
stood his ground. He wanted to sell the squash to my daughter for the price she could
afford. He said it was a fair exchange. We thanked him repeatedly and my daughter took
the big pear-shaped vegetable in her arms like it was a baby doll.


It was not the first time one of the market’s farmers had put kindness before cash. Shop
there long enough and someone is bound to say, “Oh, take two, they’re small” or “This
one’s a little bruised; I’ll throw it in for free.”


These aren’t “blue light specials” or “supersaver sales;” they’re gifts from people who
never tire of the magic that springs from the earth. In a year of Saturdays, I’ve been
invited to marvel at the shape of a carrot, to behold the size of a potato, to delight in the
beauty of a snapdragon.


In a nation of box stores and billionaire wannabes, a nation where “excess” is master, the
men and women who labor in the soil offer a glimpse of something different. It’s a
commerce measured not only by what they gain, but also by what they give.


John Greenleaf Whittier put it best in his poem, “Song of Harvest”:


Give fools their gold, and knaves their power;
Let fortune’s bubbles rise and fall;
Who sows a field, or trains a flower,
Or plants a tree, is more than all.


HOST TAG: Julia King lives and writes in Goshen, Indiana. She comes to us by way of
the Great Lakes Radio Consortium.

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Mite Zapper Might Help Bees

Beekeepers in the Midwest and elsewhere are turning to innovative ways to protect their hives from tiny, blood-sucking mites. As the Great Lakes Radio Consortium’s Sarah Hulett reports, farmers depend on the health of commercial honeybee colonies:

Transcript

Beekeepers in the Midwest and elsewhere are turning to innovative ways to protect their hives
from tiny, blood-sucking mites. As the Great Lakes Radio Consortium’s Sarah Hulett reports,
farmers depend on the health of commercial honeybee colonies:


Apples, cherries, and cucumbers are among the crops that depend on bees for pollination. But in
the mid-80’s, a parasite called varroa wiped out wild honeybees in the U.S. And the mites have
also taken a toll on commercial colonies as well.


The problem is especially serious in California. Almond growers there have had difficulties in
the last few years getting enough bees to pollinate their half-million acres of almond trees. But
Zachary Huang, a honeybee researcher at Michigan State University, says beekeepers in the
region still have about twice the number of bees needed to meet farmers’ demands.


“It’s not so bad yet that we’re having trouble getting bees to pollinate our fruit trees.”


Chemicals have been developed to kill the mites. But so far, they’ve proved only partly effective,
or the mites become resistant. Huang has patented a device called the “mite zapper” that kills the
parasites in the hives. He hopes to be able to market it to beekeepers next year.


For the Great Lakes Radio Consortium, I’m Sarah Hulett.

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Pilot Program to Help Protect Food Supply?

States around the region are taking measures to protect against terrorism against agriculture. The Great Lakes Radio Consortium’s Maria Hickey reports on a pilot program that will begin tracking the food supply:

Transcript

States around the region are taking measures to protect against terrorism against agriculture. The Great Lakes Radio Consortium’s Maria Hickey reports on a pilot program that will begin tracking the food supply:


States record the number of livestock and the amount of grain grown in each county. But it’s not clear which farms are raising the meat and produce. As a food security measure some states want to keep track of animal and produce movement. In Illinois, Department of Agriculture Director Chuck Hartke says a satellite tracking system will allow the state to pinpoint food producers, grain elevators, food processing facilities and distributors as well.


“Right now we don’t know exactly where things are going, and how much, so this tracking
system is a first step in identifying our resources in a given county and then we can do it
statewide.”


A computer program will allow the state to develop disaster plans. That will help the state deal with terrorism, diseases such as mad cow and natural disasters. If the one-county pilot program works, the project will be extended statewide in Illinois. Other Great Lakes states are looking at similar programs and trading notes on what works.


For the Great Lakes Radio Consortium I’m Maria Hickey.

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Determining the True Price of Produce

Many farmers are upset about the gap between what they earn for
their
crops, and what consumers pay at the supermarket. Now, a growers’
association is publicizing the disparity on the Internet. The "produce
price index" shows what farmers get for crops, compared to the retail
price…and gives the price spread between the two. The Great Lakes Radio
Consortium’s Wendy Nelson reports:

EPA Re-Examines Effects of Pesticides on Children

For the past few years, environmentalists have been warning consumers that pesticides applied to fruits and vegetables could be extremely dangerous to children. Soon, the Environmental Protection Agency will tackle the issue. Armed with a new federal law, the EPA is taking a fresh look to see if pesticides applied to produce carry health hazards. The Great Lakes Radio Consortium’s Julie Edelson Halpert has more:

FDA Faces Lawsuit

A national coalition of scientists, health experts and religiousleaders is suing the U.S. Food and Drug Administration. The lawsuitfiled today (Wednesday, May 27th) claims that the F-D-A’s policy towardgenetically engineered food doesn’t protect consumers. The Great LakesRadio Consortium’s Steve Frenkel reports:

Organic Producers Upset About Standard

A coalition of organic farmers, natural food stores and supermarkets in three Great Lakes states is pressuring the federal government to scrap proposed standards on "organically grown food." The Great Lakes Radio Consortium’s Bud Lowell has more: