Tag: fuels

From the Trash to the Tank

  • Ethanol can be made from material that would end up in a landfill (Source: Patrick-br at Wikimedia Commons)

For the past few years, ethanol’s been
a political darling, but lately it seems the
party’s over. There’s concern the industry’s
using too much corn. That’s contributing to
rising food prices. Well, some companies want
to avoid the controversy. Reporter Shawn Allee explains they want to make ethanol from
stuff we leave behind at the dinner table:

Transcript

For the past few years, ethanol’s been
a political darling, but lately it seems the
party’s over. There’s concern the industry’s
using too much corn. That’s contributing to
rising food prices. Well, some companies want
to avoid the controversy. Reporter Shawn Allee explains they want to make ethanol from
stuff we leave behind at the dinner table:

To give you a sense of how touchy the ethanol issue’s gotten, consider what happened to Presidential
candidate Barack Obama. Last year, he supported mandates to add billions of gallons of ethanol to our
fuel stream. But recently, on ‘Meet the Press’, he was defensive.

“If it turns out, we got to make changes to our ethanol policy to help people get something
to eat, that’s the step we take. But I also believe ethanol has been an important
transitional tool for us to start dealing with our long-term energy crisis.”

Obama and other ethanol backers say we’re not stuck with corn-based ethanol. We can use wood chips
or energy crops like switchgrass.

But this cellulosic ethanol is a ways off.

First, the technology’s expensive. Plus, farmers don’t even grow energy crops now.

So, some companies hope to make ethanol from stuff that doesn’t need farms at all. It would come
from garbage cans, like this one at a coffee shop.

“In that receptacle there’s a lot of paper, and there’s some food bits and there’s some
scraps. So, we’re able to turn that into sugar. And the weak sugar, then we ferment, we distill into alcohol, and we get the ethanol.”

Zig Resiak is with a start-up company called Indiana Ethanol Power. He says garbage could compete
with corn.

“If you have a corn-to-ethanol facility, you’re going to pay for the feedstock. Trash, as a feedstock, we don’t
pay for it. The municipalities actually pay us to take the trash, just like a
landfill will take the trash.”

Resiak’s company isn’t the only one to figure this out. At least three other ethanol firms are asking
cities to hand over their trash, and cash. Besides being cheaper, there might be other advantages to
using garbage for ethanol.

Bob Dineen is with the industry group the Renewable Fuels Association.

“We have garbage all across the country.”

Here’s why that matters.

Before it makes it to the pump, ethanol needs to be blended at refineries. Dineens says those
refineries are far from corn farms and rural ethanol plants, but refineries are often close to big metro
areas, and big-city trash.

“A company that is able to produce from local landfill refuse – he’s clearly going to have an
advantage in terms of transportation, feedstock costs, and all the rest.”

Well, that’s the theory, anyway. The market hasn’t tested garbage-based ethanol yet.

So, what exactly is stopping companies like Indiana Ethanol Power from giving it a go?

Resiak says it’s simple – cities just haven’t been willing to part with their trash.

“Municipalities are very comfortable with putting it in the back of a truck and letting it go to the landfill. They don’t think about it twice. But for us to come in and say we’re going to
take it cheaper and we’re going to save you millions of dollars a year on your tipping fee – that’s different
and that’s kind of scary, and they want to take a good, strong look at that.”

Resiak predicts by the time cities do come around to the idea, there will be even more companies ready to
take garbage bags out of their hands.

For The Environment Report, I’m Shawn Allee.

Related Links

Green Fuel From Green Slime

  • Roger Ruan directs the Center for BioRefining at the University of Minnesota. He's experimenting with algae that grow quickly in the nutrients in wastewater. He says the oil-rich algae are a potential source of biodiesel. (Photo by Stephanie Hemphill)

When people talk about bio-fuels,
they usually mean ethanol from corn or diesel
fuel from soybeans. But there are lots of
possibilities. One of them is algae. Algae
contains a lot of oil. The US Department of
Energy experimented with algae for nearly
twenty years after the oil crisis of the 1970s.
But with fuel prices so high, scientists around
the world are looking at algae again. Stephanie
Hemphill reports one researcher thinks
he’s figured out how to grow lots of algae, fast:

Transcript

When people talk about bio-fuels,
they usually mean ethanol from corn or diesel
fuel from soybeans. But there are lots of
possibilities. One of them is algae. Algae
contains a lot of oil. The US Department of
Energy experimented with algae for nearly
twenty years after the oil crisis of the 1970s.
But with fuel prices so high, scientists around
the world are looking at algae again. Stephanie
Hemphill reports one researcher thinks
he’s figured out how to grow lots of algae, fast:

Roger Ruan has been trying for years to figure out how to turn algae into diesel,
economically. He’s the director of the Center for BioRefining at the University of
Minnesota.

Ruan says there’s no question it can be done; some people are already producing algae
oil. They’re growing it in open ponds. It’s used for pharmaceuticals, food supplements,
and cosmetics.

“Right now, based on an open pond system, per acre per year, you can easily get 5,000
gallons of oil, and soybean would probably give you 50. That’s 100 times difference.”

So algae can be far more efficient at producing diesel fuel than soybeans. But how do
you grow enough algae to make a dent in the nation’s energy demand?

Ruan is turning to an unlikely partner: the local sewage treatment plant.

“Wastewater has lot of nutrients: phosphorus, nitrogen, are all available in wastewater,
and actually you spend lot of money to remove these from wastewater, so if we can kill
two birds with one stone, that would be the best, and that’s what we’re hoping to do.”

(sound of treatment plant)

St. Paul, Minnesota’s sewage treatment plant sits on the bank of the Mississippi River.
The basement of the building where the solids are separated from the liquids is a
brightly lit space. It’s filled with big steel pipes and valves and tanks.

Off to one side, Ruan’s team is setting up a rack of aquariums – the future home of juicy
green algae. When everything is ready, some of the partially-treated waste will be
diverted into the tanks, where it will feed the algae.

The waste is still full of stuff that’s bad for the river, but good for algae.

“It’s got a fair amount of phosphorus, and some ammonia nitrogen that the algae are
going to need.”

Bob Polta is manager of research and development at the treatment plant.

It’s easy to see why he likes this idea: every day the facility has to remove 4 tons of
phosphorus and more than 16 tons of nitrogen from the waste stream.

The algae experiment, if it works, will allow them to do some of that removal in a more
cost-effective way. And this could be the answer to Roger Ruan’s problem of trying to
create enough algae to make enough oil to compete with petroleum diesel.

Polta says there’s a big potential, both for cleaning wastewater and for producing
energy in the same place.

“All the wastewater treatment ponds in the small communities around the state are
essentially using algae to treat wastewater; it’s just that they’re not being harvested. It’s
just that we’re getting two goals together here, and two research groups, one is essentially taking algae and
harvesting the oil and making biodiesel, and the other is using algae as a treatment
scheme, and to see if we can make this thing really fit.”

Polta expects by the end of the year he’ll know more about whether this is a practical
idea.

Roger Ruan says within six-to-ten years someone, somewhere, will be producing diesel
from algae on a commercial scale.

For The Environment Report, I’m Stephanie Hemphill.

Related Links

Turning Garbage Into Gas

  • Jeffrey Langbehn beside one his family's hunting catches. He directs the Lake County Solid Waste Management District. His enthusiasm for the outdoors is one reason he says he supports the idea of finding landfill alternatives. The prospect of lower waste-handling costs is another. (Photo by Shawn Allee)

Trash is usually out of sight, out of mind, but occasionally garbage grabs attention – especially when it starts costing a lot. Landfill fees are rising, and with higher costs to ship or truck garbage, a lot of communities are scrounging for alternatives to landfills. Reporter Shawn Allee found one community that hopes a trendy fuel might solve its garbage problem:

Transcript

Trash is usually out of sight, out of mind, but occasionally garbage grabs attention – especially when it starts costing a lot. Landfill fees are rising, and with higher costs to ship or truck garbage, a lot of communities are scrounging for alternatives to landfills. Reporter Shawn Allee found one community that hopes a trendy fuel might solve its garbage problem:

For most of us, there’s nothing less sexy than trash. But in part of Indiana, that’s changing.

“One second.”

“Take your time.”

I’m waiting for Jeff Langbehn. He heads a solid waste district in Northwest Indiana.

Lately, Langbehn’s phone is ringing off the hook – from reporters and colleagues. And why are they calling? Basically, it’s because Langbehn’s county is leaning toward doing something new with garbage – something that intrigues trash bureaucrats, maybe even the one in your town.

You see, Lake County Indiana is this close to letting companies convert most of its garbage into ethanol, you know, to run cars. Langbehn says his landfill costs are rising quickly. In his case, that would be 42 dollars per ton.

“The two garbage to ethanol providers were for $17.50 ton. Those savings alone made our board say, hey, we have to pay attention to this.”

And so Lake County Indiana sat down with the ethanol operators.

“And we asked the hard questions like, ‘are there any of these things operating in the country?’ All the standard questions you would ask.”

Shawn Allee: “Wait a minute, when you asked who else has done this and they said, no one, what did you think?”

“Well, the fact of the matter is that the components are being used, and have been used for a very, very long time.”

Sure, some components of garbage-to-ethanol technology have been around for a while. But, if you ask ethanol producers where they actually turn trash into ethanol, they say they can do it in labs, or in test facilities. That’s got some folks in the trash biz nervous.

“I guess I’d say I’m cautious and wary of using any new technology to process solid waste.”

Jeremy O’Brien researches trash for the Solid Waste Association of North America – a trade group. He’s seen landfill alternatives come and go.

“Early on in the 1970s we tried a number of technologies including composting the waste stream, anaerobic digestion, and then we also tried incineration.”

Of those, only incineration survived, but early incinerators had a nasty habit of spewing toxic pollutants, stuff like dioxin, out their smokestacks. O’Brien says incinerators are now cleaner.

His point, though, is that it takes time to improve technology. He worries some communities bent on turning garbage into ethanol could end up holding the bag.

“The facility could fail early on and they’d be stuck without having a place to put their waste.”

Indiana’s Jeff Langbehn says that won’t happen to his county. He says the ethanol companies will cover their own financing, and the county will have insurance as a backup. But speaking of backups, there already is another landfill alternative, right?

Shawn Allee: “Why can’t we just recycle all this and make it into stuff people buy again?”

“There are a number of people out there that could give a rat’s patoot about recycling. And that’s the waste stream we’re having to deal with. The other reality is, recycling is expensive, so I don’t believe it’s a realistic possibility for us to recycle everything, both from a cost standpoint and a societal standpoint.”

So, Langbehn says recycling helps, but ethanol might do more. He says he kind of wishes someone else would try trash-to-ethanol technology first, but it’s worth testing out.

And he says it might be so cheap he won’t even have to hold his nose.

For The Environment Report, I’m Shawn Allee.

Related Links

Big Plans for Big Livestock Farm

  • Bion's proposed project would consist of 84,000 beef cattle (Photo by Bill Tarpenning, courtesy of the USDA)

Corporations are taking a new approach to farming. They’re combining ethanol production with feeding animals. The corporations need land, water, and a willing community. They turn to economically depressed rural communities and promise jobs. But some researchers think these rural communities could end up with more problems than benefits. Kinna Ohman reports:

Transcript

Corporations are taking a new approach to farming. They’re combining ethanol production with feeding animals. The corporations need land, water, and a willing community. They turn to economically depressed rural communities and promise jobs.But some researchers think these rural communities could end up with more problems than benefits. Kinna Ohman reports:

Bion Environmental Technologies is just like a lot of big businesses trying to capitalize on the ethanol trend.

Over the past year, people from Bion have been working with local officials in St. Lawrence County, a rural area of northern New York. Bion plans to build their first project there. It’ll be a huge indoor feedlot for eighty four thousand beef cattle and a large corn ethanol plant.

They have everything accounted for – they’ll ship cattle and corn in from the Midwest. They’ll use distiller’s grain from the ethanol plant to help feed the cattle. And they’ll even use manure from the cattle to power the ethanol plant.

Jeff Kappell is a manager with Bion. He says this kind of scale and integration is the future of agriculture. And he thinks it’ll be great for the community,

“Establishing a brand and establishing the ability, the knowledge in a consumer marketplace that there is value associated with activity in St. Lawrence County is a tide that can rise all boats. So we see this as symbiotic.”

But not everyone agrees. They wonder how much water the project will need. And they wonder about pollution from all those cattle.

Shane Rogers knows a lot about pollution from factory farms. He’s a professor of environmental engineering at Clarkson University in St. Lawrence County. He tests for certain pollutants in the water and soil around factory farms. Rogers often finds antibiotic resistant E-Coli and other pathogens. He says that type of discharge can happen every day – even at the best run facilities.

”And these are from operations with good practices. Or what we would call good practice because they’re following nutrient management plans. Because they’re treating their manures the way they’re supposed to be before applying them to land. Because they’re collecting and doing things the way they’re supposed to be. But they still can contribute pathogens to the environment and those pathogens still affect us.”

Rogers says factory farms don’t need to remove these pollutants. But people at Bion say their system will remove a lot of them.

James Morris is one of their engineers. He says they’re motivated to keep environmental impacts low,

“A facility of this sort wants to have the minimum possible environmental liability. Because that lowers the risk and raises the probability of profits. And we’re in the business to make money.

But researchers are still unconvinced. And some think there are better ways to provide meat and dairy products for the country.

Doug Gurian-Sherman’s with the Union of Concerned Scientists. He’s the lead author of a new report critical of large factory farms. He says small and medium sized farms can provide what people need without the risks to those in rural communities.

“When you spread these animals out, and you have smaller operations you have benefits to rural communities in terms of not as many problems with the pathogens, or the odors or the nutrient problems. What we’re talking about are sophisticated, smart alternatives that work with nature rather than against it.”

But Bion insists their large integrated project will work. And they expect to receive millions in taxpayer subsidies to help make it work. It’s unclear what the costs will be to the community. In the meantime, the trend continues. Bion plans to build at least five more of these projects throughout the country.

For The Environment Report, I’m Kinna Ohman.

Related Links

Founding Family Scolds Exxon

  • An Exxon-Mobil worker on the job (Photo courtesy of the US Dept of Labor)

The family that founded Exxon-Mobil wants the
oil company to invest more in alternative energy.
Lester Graham reports:

Transcript

The family that founded Exxon-Mobil wants the
oil company to invest more in alternative energy.
Lester Graham reports:

John D. Rockefeller was one of the first oil barons in the U.S. His family still owns a
good chunk of Exxon-Mobil. But the family thinks the senior managers of Exxon-Mobil
are banking on fossil fuels, such as oil and gas, too much.

During a news conference Neva Rockefeller Goodwin said the majority of the family is
concerned that Shell, Chevron, BP and others are investing in alternative energy, while
Exxon-Mobil is behind the curve.

“In important areas like renewable energy strategies, bringing a variety of technologies to
scale and preparing for policies stemming from global climate risk, Exxon’s competitors
are far out in front.”

The family says a few billion of the 25-billion dollars a year Exxon-Mobil plans to spend
for oil and gas exploration should be spent exploring alternative energy.

For The Environment Report, this is Lester Graham.

Related Links

Ethanol: Grass Better Than Corn

  • A lot of people are banking on a prairie grass called switchgrass as a future raw material for ethanol. (Photo courtesy of Michigan Department of Natural Resources)

Researchers have found using grass instead of corn might be a better
way to make ethanol. Rebecca Williams reports:

Transcript

Researchers have found using grass instead of corn might be a better
way to make ethanol. Rebecca Williams reports:


Ethanol is showing up in more gas stations around the country. Right
now that ethanol is made from corn. But critics say corn ethanol
takes a lot of energy to produce… so there’s not a huge energy gain
from making it.


Ethanol made from grass might be a better bet.


New research finds that making ethanol from switchgrass is much
more efficient than making it from corn. The study’s published in the
Proceedings of the National Academy of Sciences.


In the study, researchers got almost five and a half times more energy
out of the switchgrass than it took to grow, harvest and turn it into
fuel. They say that’s a lot better than corn.


But there’s one big obstacle. The technology to make ethanol from
switchgrass on a commercial scale is still being developed.


For the Environment Report, I’m Rebecca Williams.

Related Links

Digesters Convert Manure Into Fuel

The federal government is putting more money into turning cow manure into power. The Great Lakes Radio Consortium’s Chuck Quirmbach reports:

Transcript

The federal government is putting more money into turning cow manure into power. The Great
Lakes Radio Consortium’s Chuck Quirmbach reports:


The U.S. Department of Agriculture recently gave 6 Great Lakes states about 14 million dollars
for renewable energy and energy efficiency projects at rural sites. A large chunk of the money
will go to manure digesters, which separate liquid and solid waste and capture methane gas that
can be turned into electricity. Frank Frassetto heads the USDA’s rural development office in
Wisconsin. He says the manure digesters are a small step toward energy independence, as some
digesters can power about 200 homes apiece.


“That’s a pretty serious amount of energy to be putting back into the grid.”


Frassetto says he expects more farmers and rural groups to apply for these funds. He says the
USDA is trying to back projects that reduce odors and other pollution coming from larger farms
that may border developed areas.


For the Great Lakes Radio Consortium, this is Chuck Quirmbach reporting.

Related Links

The Cost of Alternative Fuels

While many motorists have enjoyed the lower gasoline and diesel fuel
prices the last couple of years… those lower prices have made
alternative fuels such as natural gas relatively more expensive. The
Great Lakes Radio Consortium’s Lester Graham reports… the managers of
one bus fleet are wondering if running less polluting buses is worth the
cost:

Court Decision Gives Renewable Energy a Boost

Coal fired power plants produce two-thirds of the nation’s electricity. In the process, they emit millions of tons of carbon dioxide and other air pollutants. But a recent court decision in Minnesota may provide an incentive to embrace cleaner energy sources. The Great Lakes Radio Consortium’s Steve Frenkel has more: