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Answer

From: Fred Friedman (FRIEDMAN.FRED@EPA.GOV)
Date: Thu Jun 01 2000 - 09:44:23 EDT


Date: Thu, 1 Jun 2000 09:44:23 -0400 (EDT)
From: FRIEDMAN.FRED@EPA.GOV (Fred Friedman)
Subject: Re: Recycling of rubber (Eric Bruce)

June 1, 2000

Dear Eric Bruce:

4,750,000 tons of rubber were generated as waste in the US in 1997, of which only about 10% was recovered.

Rubber is recycled in the US mostly from auto/truck tires. That is, most tires are retreaded and the rubber returned to use. In a true full recycling process, the tires would be physically changed to shreds, or halves, or crumbs depending on their intended new use. Metals are removed from the tires. If crumbed, devulcanization changes the chemical structure of the tire rubber as well by breaking sulfur bonds and permitting nylon removal. Non tire uses of this material with sustainable markts are as additive to roadway and playground surfaces, and to roadway construction materials in subsurfacing and barriers. Unproved markets include many consumer goods.

For further info: Scrap Tire Management Council.

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