Suitability Of Shredded Tyres As A Substitute For A Landfill Leachate Collection Medium  

Oleh:

Park, Jae K. ; Edil, Tuncer B. ; Kim, Jae Y. ; Huh, Mock ; Lee, Sung Ho

Jenis: Article from Journal - ilmiah internasional
Dalam koleksi: Waste Management & Research vol. 21 no. 3 (Jun. 2003), page 278-289.
Topik: Heavy metals; landfill; organic compounds; shredded tyres; sorption; tyre-chips; wmr 544–4.
Fulltext: 278.pdf (1.08MB)

Isi artikel

A series of tests were conducted to investigate the fate of heavy metals and gasoline components in a simulated landfill, consisting of a 30 cm thick clay liner and a leachate collection layer containing tyres as well as in two test cells installed in a landfill. Arsenic, selenium, mercury, barium, and lead concentrations were lower while zinc concentration was higher in the tank containing tyrechips than the tank without tyre-chips. When samples were filtered, however, concentrations of zinc as well as other inorganics were lower in the tank containing tyrechips, indicating that metals in the leachate exposed to tyre-chips travel more slowly in a subsurface environment due to filtering effect. In a test cell study, arsenic, cobalt, lead and nickel concentrations were lower in the cell containing tyre-chips than in the cell without tyre-chips, except iron and zinc. Both tests indicate that some inorganic contaminants are sorbed to tyre-chips. Gasoline components were also significantly sorbed by tyre-chips in field cell tests. Although tyre-chips are known to leach organic and inorganic contaminants, concentrations in field conditions will be lower than the reported experimental results since the tests were performed under worst-case scenarios. If tyre-chips are used in areas where contamination levels are high, then they can be used as a sorbent for environmental clean-up.

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