Tag: scrap tires

More Scrap Tires Reused

  • A variety of products using crumb rubber, which is manufactured from scrap tires. (Photo courtesy of Liberty Tire)

Americans get rid of almost 300 million scrap tires every year.
Historically, a lot of used tires have ended up at the bottom of
ravines or in huge tire piles. These piles have created eyesores,
toxic fire traps and places for mosquitoes to breed. But Ann Murray
reports that the days of widespread illegal dumping and monster tire
piles are waning:

Transcript

Americans get rid of almost 300 million scrap tires every year.
Historically, a lot of used tires have ended up at the bottom of
ravines or in huge tire piles. These piles have created eyesores,
toxic fire traps and places for mosquitoes to breed. But Ann Murray
reports that the days of widespread illegal dumping and monster tire
piles are waning:


Michelle Dunn is making her way through shoulder high knotweed to
show me an urban tire dump:


“This is the start of the tires. They’re all entwined in here.”


About 300 tires have been chucked over the hill in this quiet
Pittsburgh neighborhood. Dunn’s with a non-profit that helps
communities clean up old dump sites. She says illegal tire dumping is
still a problem but not the gargantuan problem it used to be:


“I don’t think you’re seeing new major piles appearing. The regular
Joe isn’t dumping as many tires because people are now becoming
educated. They have a service they can take their tires to have them
disposed of properly.”


In many states, the place to take old tires is now the neighborhood
tire store. Since the early 1990s, about 35 states have required tire
dealers to collect small fees to dispose of used tires. Now fewer
people dump tires and about 4 out of 5 scrap tires have been
cleaned up. Numbers have nosedived from a billion stockpiled tires to
less than 200 million.


Not all states have had equal success reducing their cache of old
tires. Some states such as Alaska, Wyoming and Nevada are still
struggling. Their rural landscapes have made it hard to catch illegal
dumpers and collect tires. Many other states have stepped up
enforcement. They now make dumpers pay to clean up waste tire
sites and register scrap tire haulers. But Matt Hale says new laws
aren’t the only reason scrap tire programs are working. Hale directs
the division of solid waste for the US Environmental Protection
Agency:


“In many cases a successful program is the result of being near
markets for tires. In the southeast for example, tires are in demand as
a fuel use and that certainly makes state tire programs in that part of
the country easier.”


Stricter waste tire laws have made it easier for the tire
recycling industry to take hold. Dave Quarterson is a senior director
with Liberty Tire. Liberty’s the biggest tire recycling company in the
country:


“It has been difficult for companies like ours in the past to look at
having to invest 5 or 10 million dollars into a facility to recycle tires
and then to have to compete on the street with a guy with a $1000
pickup truck who’s rolling ’em down an embankment somewhere.”


In 1990, very few of the 300 million scrap tires generated each year
were re-used. Today about 90 percent are recycled. A majority of
these tires are chipped and shipped to cement kilns and paper mills
to be burned for fuel. A fuel source that US EPA says is relatively
safer than burning coal but environmental groups say is still polluting.


Tire recyclers like Liberty Tire are now in big demand. Liberty uses
almost 75 million scrap tires a year. Their headquarters
plant specializes in making “crumb” rubber. Crumb’s used in
everything from football field turf to brake lining. It’s made from
shredded tires that are frozen with liquid nitrogen and then pulverized
into various sized bits.


Dave Quarterson, says tire recyclers are starting to move away from
producing tire chips for fuel to making newer products like crumb
rubber:


“We’ve got a lot more money into producing it but it’s a lot more
rewarding financially.”


States are also encouraging new uses for the decades old tires that
still remain in big, abandoned piles. Even with this backlog of old
scrap tires, states and recyclers are optimistic that growing markets
and new laws mean more and more scrap tires will have a useful
second life.


For the Environment Report, this is Ann Murray.

Related Links

Old Tires Hit the Gridiron

Great Lakes residents use more than two million tires a year, and many of them end up in a landfill. But one Illinois school has found an unusual way to use some of those tires. The Great Lakes Radio Consortium’s Chris Lehman has more:

Transcript

Great Lakes residents use more than two million tires a year, and many of them end up in a landfill. But one Illinois school has found an unusual way to use some of those tires. And they’re saving on hospital costs as well. The Great Lakes Radio Consortium’s Chris Lehman has more.


(natural sound football practice, fade under quickly)


From beer cans to soda bottles, there are plenty of items that can be recycled at a typical football game. But at the 31-thousand seat Huskie Stadium at Northern Illinois University in DeKalb, Illinois, what is perhaps the largest recycling effort is in the field itself. More than 18-thousand ground-up tires are underneath the new surface of the playing field . . .mixed with sand; they provide a soft but durable base for all types of athletic events. The fake grass on top is similar to Astroturf, but project manager Norm Jenkins says this surface is better. He says the most important advantage is safety.


“It’s well documented over the last few years since these fields have been installed that the injury frequency goes way down in terms of ankle and knee injuries on this surface as opposed to the old Astroturf carpet. So it really simulates grass in that way. The other big advantage to this in our judgment is the appearance. Because really, as you sit in the stands at a Huskie football game–and even from the sidelines when you stand on that stuff–you’re convinced that the surface is grass. It looks, it appears just like a pristine grass playing surface”


The artificial turf at NIU is a brand called Field Turf. Jim Petrucelli is Vice-President of Turf USA, a Pittsburgh-based distributor of Field Turf. He says the scrap tires for the product are first washed with a high-pressure cleaning system similar to a car wash. But the tires aren’t run through grinder blades. That process is called ambient grinding because it takes place at room temperature. It tends to produce longer, rougher particles.


Instead, Petrucelli says the company cryogenically freezes the tires to temperatures below negative 80 degrees Fahrenheit.


“And then they drop them onto a hammer-mill. And the hammer-mill shatters them into pieces. And those pieces tend to have much flatter sides on them . . . that works much better in our system to prevent the rubber from migrating through the sand that it’s mixed with.”


Field Turf is used at several universities in the Great Lakes region, including the University of Cincinnati, Bucknell University in Pennsylvania, and at a University of Michigan field house. It’s also in use at dozens of high schools and public recreation facilities across the region, and has been installed in places as far away as Botswana and New Zealand.


Petrucelli says that at more than eight dollars a square foot, Field Turf is the Cadillac of artificial turf products. At Northern Illinois University, nearly one-third of the cost of installing the Field Turf was recovered through a variety of money-saving measures. The largest of these was a 200-thousand dollar grant from the Illinois Department of Commerce and Community Affairs. The money was awarded to the school for its use of the tires, which came from a salvage yard near Chicago. Robert Albanese is NIU’s Associate Vice President of Finance and Facilities.


“Every time you purchase a new tire there’s a fee that goes along with it. It goes to this fund for recycling the tires. And this process will only work, is if we use those recycled materials on the other end. And this is probably one of the bigger uses for recycled rubber that we’ve seen in the state of Illinois.”


NIU Director of Recycling Mary Crocker says the use of old tires in the Field Turf project wasn’t just about saving money.


“We’re interested in keeping the tires out the landfills. So this is probably the most comprehensive recycling program that you can find, where virtually everything has to do with recycling.”


(More football sound under)


The old Astroturf, which was removed to make way for the Field Turf, was also recycled. The university sold it for use as a soccer field overseas, earning an additional 29 thousand dollars for the school. For the Great Lakes Radio Consortium, I’m Chris Lehman.

Where the Rubber Meets the Road

The phrase "where the rubber meets the road" is taking on new meaning
in some states. Ohio, for example, is testing rubber in the mix of
asphalt it uses to repave roadways. Ohio and other states say this is
one way to recycle old tires. But, as the Great Lakes Radio
Consortium’s Julie Grant Cooper reports, researchers aren’t sure it’s
cost effective:

A New Use for Old Tires

Each year in the United States alone, an estimated
two-hundred-fifty-million tires are scrapped. While some enterprising
companies have found ways to recycle them, up to eighty-percent of waste
tires still end up stockpiled or thrown away in landfills. But now some
researchers think they may have found a way to help control air
pollution with a substance made from old tires. The Great Lakes Radio
Consortium’s Wendy Nelson reports: