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SIMULTANEOUS DESTRUCTION OF ORGANICS AND STABILIZATION OF METALS IN SOILS
King, A. B. AND R A. Parker*. SIMULTANEOUS DESTRUCTION OF ORGANICS AND STABILIZATION OF METALS IN SOILS. EPA/540/R-98/500 (NTIS 98-133150), 1998.
The Sulchem Process reacts the material being treated with elemental sulfur at elevated temperatures in an inert reactor system. Organic hydrocarbons react with the sulfur to form an inert fine solid of carbon and sulfur, hydrogen sulfide gas, and modest amounts of carbon disulfides or sulfide coated particles which are less soluble. Various types of batch reactors were evaluated in the laboratory test program to establish process conditions and evaluate several reactor configurations. Tests were employed using a contaminated soil sample from a manufactured gas plant (MGP) site. Destruction and removal efficiencies for aromatic hydrocarbons from phenanthrene to benzopyrene were all in excess of 99%. Cadmium, copper, lead, nickel and zinc were found to provide significant reduction in EPA Toxicity Characteristic Leaching Procedure (TCLP) values following treatment of the soil by the Sulchem process. Process economics for remedial soil treatment were estimated to be in the range of $105 to $181/ton depending on the size of the site and the processing rate.
Record Details:Record Type: DOCUMENT (SITE DOCUMENT/REPORT)
Organization:U.S. ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL RISK MANAGEMENT RESEARCH LABORATORY
LAND REMEDIATION AND POLLUTION CONTROL DIVISION
SOIL AND SEDIMENTS MANAGEMENT BRANCH