U.S. EPA Superfund Innovative Technology Evaluation (SITE) Program
Waste Vitrification Through Electric Melting
Ferro Corporation

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Waste Vitrification Through Electric Melting, Ferro Corporation (90KB)

Abstract

Vitrification converts contaminated soils, sediments, and sludges into oxide glasses. Inorganic contaminants are stabilized in the vitrified glass. Organic compounds decompose at the temperature required for glass production (1,500 ^oC). In an electric melter, glass stays molten with joule heating. Wastes are processed under a thick blanket of feed material which forms a counterflow scrubber, limiting volatile emissions. Decomposition products and volatile inorganics are removed from the low volume melter off-gas. Under the Emerging Technology Program, a synthetic soil containing RCRA metals was mixed with glass-making additives at approximately a 2 to 1 ratio. Toxicity Characterization Leaching Procedure (TCLP) metals were reduced to less than 10 percent of the remediation limit.

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Posted October 1, 1999

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