Abstract
The Plasma Centrifugal Furnace (PCF) developed by Retech Inc. of Ukiah, California was demonstrated under the EPA’s Superfund Innovative Technology Evaluation (SITE) Program in July 1991 at the U.S. Department of Energy’s Magnetohydrodynamics Component Development and Integration Facility (CDIF) in Butte, Montana. The PCF was designed to function as a vitrification technology in that plasma energy was used to melt contaminated soil. On cooling, the treated soil formed a glasslike matrix which effectively immobilized metal contamination. During vitrification, organic contamination in the soil was driven off and thermally destroyed. The treated waste was never exposed to the extremely high temperatures present in the center of plasma plumes. Rather, it experienced temperatures of approximately 2000°F which is similar to conventional incineration temperatures. Nevertheless, 99.99percent Destruction and Removal Efficiencies (DREs) were achieved and the vitrified soil passed the TCLP test. One can conclude fro...
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