Removal of PCBs from a Contaminated Soil Using CF-Systems® Solvent Extraction Process

The U.S. Environmental Protection Agency's (EPA) Superfund Technical Assistance Response Team (START) in cooperation with EPA's Superfund Innovative Technology Evaluation (SITE) program evaluated a pilot scale solvent extraction process developed by CF-Systems. This process uses liquefied...

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Published in:Journal of the Air & Waste Management Association (1995) 1997-10, Vol.47 (10), p.1119-1124
Main Authors: Meckes, Mark C., Tillman, Joseph, Drees, Lauren, Saylor, Eric
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Language:English
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cited_by cdi_FETCH-LOGICAL-c415t-919a98c8d45e17b574be19678994bde0716faa3288e3fe363230ee6bd7b877b83
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container_end_page 1124
container_issue 10
container_start_page 1119
container_title Journal of the Air & Waste Management Association (1995)
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creator Meckes, Mark C.
Tillman, Joseph
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Saylor, Eric
description The U.S. Environmental Protection Agency's (EPA) Superfund Technical Assistance Response Team (START) in cooperation with EPA's Superfund Innovative Technology Evaluation (SITE) program evaluated a pilot scale solvent extraction process developed by CF-Systems. This process uses liquefied propane to extract organic contaminants from soils, sludges, and sediments. A pilot-scale evaluation was conducted in Golden, CO at Hazen Research, Inc., using CF-Systems' trailer-mounted organics extraction unit. Approximately 1,000 pounds of soil, with an average poly-chlorinated biphenyl (PCB) concentration of 260 mg/kg, was obtained from a remote Superfund site. Six 100-pound batches of the contaminated soil were extracted using multiple extraction sequences. Three of the six batch runs were subjected to three extraction sequences each, so that process variability could be evaluated. Results showed that PCB removal efficiencies varied between 91.4 and 99.4%, with the propane-extracted soils retaining low concentrations of PCBs (19.0-1.8 mg/kg). Removal efficiencies of oil and grease (O&G) were found to be 96.0 to 99.6% with propane-extracted soils retaining O&G concentrations from 279 to
doi_str_mv 10.1080/10473289.1997.10464404
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title Removal of PCBs from a Contaminated Soil Using CF-Systems® Solvent Extraction Process
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