Featured Research

from universities, journals, and other organizations

Shredded Tires A Cheap, Environmentally Friendly Way To Cover Landfills

Date:
October 3, 2005
Source:
University of Illinois at Urbana-Champaign
Summary:
Placing shredded tires on top of -- rather than in -- landfills can save money and benefit the environment, researchers from the University of Illinois say.

UI researchers are evaluating the use of shredded tires as a drainage material in waste-containment systems.
Credit: Image courtesy of University of Illinois at Urbana-Champaign

Timothy Stark, aprofessor of civil and environmental engineering at the University ofIllinois at Urbana-Champaign, and Krishna Reddy, a professor of civilengineering at the University of Illinois at Chicago, recentlyevaluated the use of shredded tires as a drainage material inwaste-containment systems. Shredding tires into chips roughly 4 inchesby 6 inches, they report, offers a simple and cost-effective way ofproviding drainage for modern landfills, remediating older landfills,and disposing of mountains of scrap tires.

Nearly 280 milliontires are discarded annually in the United States. Piles of worn-outtires can become eyesores and breeding grounds for mosquitoes. Inlandfills, intact tires can collect methane (produced by decomposingwaste) and create potential fire hazards. Over time, these tires canwork their way to the surface, where they can damage liner covers andcause increased leachate production that could contaminate groundwater.

“Asa result, many states now require that scrap tires be shredded intochips prior to disposal,” Reddy said. “Instead of simply burying thosechips with all the other waste, we suggest using them as a drainagelayer in both modern and abandoned landfills.”

The drainage layerprevents water from percolating through the waste and polluting theground water, Reddy said. Typically, the drainage layer is composed ofsand or gravel, which must be purchased and transported to the landfill.

Toinvestigate the feasibility of using shredded tires as a surrogatedrainage material, scrap tires were shredded and distributed asdrainage layers at two landfills: one in southern Illinois and theother near Chicago.

Stark and Reddy monitored the two sites forsuch characteristics as settlement, erosion, flow rates and waterquality, and compared them with conventional sites that used sand orgravel. The researchers also measured the permeability of tire chips inthe laboratory.

“Our research shows that replacing the sand orgravel with a layer of tire chips works just as well and costs less,”Stark said. “The tires must be shredded for disposal anyway, so thereis fairly little expense compared to buying and hauling sand or gravel.”

Theremediation of old landfills could consume huge quantities of scraptires. “A drainage layer one-foot-thick covering one acre requiresabout 70,000 tires,” Stark said. “A typical landfill covers 10 to 20acres, and there are about 150 abandoned landfills in Illinois, alone,that are in need of some degree of remediation.”

Shredded tiresalso could be used as backfill behind retaining walls and in otherlocations where sand or gravel is commonly used, the researchers report.

The work was funded by the Illinois Department of Commerce and Economic Opportunity.


Story Source:

The above story is based on materials provided by University of Illinois at Urbana-Champaign. Note: Materials may be edited for content and length.


Cite This Page:

University of Illinois at Urbana-Champaign. "Shredded Tires A Cheap, Environmentally Friendly Way To Cover Landfills." ScienceDaily. ScienceDaily, 3 October 2005. <www.sciencedaily.com/releases/2005/10/051003232701.htm>.
University of Illinois at Urbana-Champaign. (2005, October 3). Shredded Tires A Cheap, Environmentally Friendly Way To Cover Landfills. ScienceDaily. Retrieved July 23, 2014 from www.sciencedaily.com/releases/2005/10/051003232701.htm
University of Illinois at Urbana-Champaign. "Shredded Tires A Cheap, Environmentally Friendly Way To Cover Landfills." ScienceDaily. www.sciencedaily.com/releases/2005/10/051003232701.htm (accessed July 23, 2014).

Share This




More Earth & Climate News

Wednesday, July 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Observation Boat to Protect Cetaceans During Ship Transfer

Observation Boat to Protect Cetaceans During Ship Transfer

AFP (July 22, 2014) As part of the 14-ship convoy that will accompany the Costa Concordia from the port of Giglio to the port of Genoa, there will be a boat carrying experts to look out for dolphins and whales from crossing the path of the Concordia. Duration: 01:02 Video provided by AFP
Powered by NewsLook.com
New Orleans Plans to Recycle Cigarette Butts

New Orleans Plans to Recycle Cigarette Butts

AP (July 21, 2014) New Orleans is the first U.S. city to participate in a large-scale recycling effort for cigarette butts. The city is rolling out dozens of containers for smokers to use when they discard their butts. (July 21) Video provided by AP
Powered by NewsLook.com
Shark Sightings a Big Catch for Cape Tourism

Shark Sightings a Big Catch for Cape Tourism

AP (July 21, 2014) A rise in shark sightings along the shores of Chatham, Massachusetts is driving a surge of eager vacationers to the beach town looking to catch a glimpse of a great white. (July 21) Video provided by AP
Powered by NewsLook.com
Spectacular Lightning Storm Hits London

Spectacular Lightning Storm Hits London

AFP (July 19, 2014) A spectaCular lightning storm struck the UK overnight Friday. Images of lightning strikes over the Shard and Tower Bridge in central London. Duration: 00:23 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins