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REMOVAL OF PCBS FROM CONTAMINATED SOIL USING THE CF-SYSTEMS SOLVENT EXTRACTION PROCESS: A TREATABILITY STUDY
Citation:
Tillman, J., L Drees*, AND E. Saylor. REMOVAL OF PCBS FROM CONTAMINATED SOIL USING THE CF-SYSTEMS SOLVENT EXTRACTION PROCESS: A TREATABILITY STUDY. U.S. Environmental Protection Agency, Washington, DC, EPA/540/R-95/505 (NTIS PB95-199030), 1995.
Impact/Purpose:
information
Description:
Soil samples were obtained from the Springfield Township Superfund Site, Davisburg Michigan. These samples were collected from a specific area of that site which was known to have some of the highest concentrations of polychlorinated biphenyl. The samples were shipped to Hazen Research Corporation, Golden, Colorado, where CF-System's solvent extraction pilot plant was located. Soil samples were screened to remove soil particles > 0.25 inches, air dried, and homogenized. Six separate batches, each weighing 100 pounds, were processed through the extractor. The operating conditions for each of the first three batch treatments varied. Results from those treatments were used to select operating conditions for the final three treatments. Results showed that the process was effective in reducing the concentration of PCBs in site soils. Removal efficiencies ranged from a low of 91.4% when two extraction cycles were used to 99.4% when five extraction cycles were used.
