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DEMONSTRATION BULLETIN: COLD TOP EX-SITU VITRIFICATION PROCESS - GEOTECH DEVELOPMENT CORPORATION
Citation:
Partymiller, K. G. DEMONSTRATION BULLETIN: COLD TOP EX-SITU VITRIFICATION PROCESS - GEOTECH DEVELOPMENT CORPORATION. EPA/540/MR-97/506, 1997.
Impact/Purpose:
information
Description:
The Cold Top Vitrification process, developed by Geotech Development Corporation, is an ex-situ, submerged-electrode, resistance-melting technology. The technology is designed to transform heavy metal contaminated soil into a glassy, amorphous, non-leachable mass composed of interlaced polymeric chains of alternating oxygen and silicon atoms. The developer claims that chromium (both trivalent and hexavalent) can readily substitute for silicon in these chains, rendering the chromium immobile to leaching by aqueous solvents. This technology has been successfully used to process municipal solid waste incinerator ash, fly ash or bottom ash, asbestos-containing materials and various slag materials. The heart of the system is an electric resistance furnace capable of operating at melting points of up to 5,200 F (2870 C). The furnace is cooled by water circulating within its hollow jacket and is equipped with an off-gas treatment system. The SITE Demonstration of this technology was conducted at Geotech's facility in Niagara Falls, NY on February 1 and March 11, 1997. The demonstration tests were performed on soils from two sites, representing residue from two types of chromite-ore processing. During the test runs, samples of untreated soil, off gas generated during the treatment, and baghouse dust were collected and analyzed. Test results showed that the vitrified product was not a characteristic hazardous waste according to the RCRA definition.
URLs/Downloads:
DEMONSTRATION BULLETIN: COLD TOP EX-SITU VITRIFICATION PROCESS - GEOTECH DEVELOPMENT CORPORATION540MR97506.PDF (PDF, NA pp, 1 KB, about PDF)