Treatment of PCB- and dioxin-contaminated soil and waste by in situ vitrification: A summary of test and commercial project results
- Geosafe Corp., Richland, WA (United States)
The In Situ Vitrification technology (ISV) is a joule-heated electric melting technology that treats contaminated soil and other earthen materials for the primary purposes of destroying, removing, or immobilizing hazardous, radioactive, and mixed contaminants. ISV may be applied to soils and wastes of various types and configurations, as well as to a broad range of organic, inorganic, and radioactive contaminants. Contaminants are either destroyed, immobilized, and/or removed during ISV treatment. The predominant disposition of heavy metals and most radionuclides is chemical or physical incorporation within the resulting vitreous monolith, which produces a permanent immobilization result. The high temperatures created during ISV processing destroys organic compounds (e.g., PCBs and dioxins/furans) by pyrolysis which results in the conversion of the organic species to nonhazardous gaseous compounds and their eventual conversion to combustion products, such as CO{sub 2} and H{sub 2}O. The movement of organic materials within the treatment zone is governed by several mechanisms as they are converted from solid to gaseous phase and then destroyed via pyrolysis. Although competing mechanisms exist, which tend to move the organic contaminants either toward or away from the advancing melt front, the net movement of organic vapors is in the direction of the soil/melt interface and toward the ground surface.
- OSTI ID:
- 488851
- Report Number(s):
- CONF-9610152-; TRN: IM9728%%42
- Resource Relation:
- Conference: 17. Superfund hazardous waste conference, Washington, DC (United States), 15-17 Oct 1996; Other Information: PBD: 1996; Related Information: Is Part Of Hazwaste world, Superfund XVII: Conference proceedings; PB: 879 p.
- Country of Publication:
- United States
- Language:
- English
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