Solvent washing of aged PCP contaminated soils

Technical Report · Fri Jan 01 04:00:00 EST 1993

OSTI ID:7297390

Khodadoust, A P; Wagner, J A; Suidan, M T; Safferman, S I

The study evaluates the removal of pentachlorophenol (PCP), a wood preserving agent, from soils that have been contaminated over a period of time. Previously, equal proportions of ethanol and water were found to have the highest PCP removal efficiencies for above ground batch extractions at variouS soil:solvent ratios. In addition, the 50% and 75% ethanol solutions achieved higher removal efficiencies at low solvent throughputs in in-situ soil flushing experiments. In batch extraction tests, the 50% ethanol solution obtained higher PCP removal efficiencies for all soil fractions than the DI water and 100% ethanol solution. The PCP removal efficiency for in-situ above ground soil washing experiments was consistently higher for the 100x140 U.S. mesh soil, regardless of the aging period. In addition, for both in-situ flushing and above ground tests, a lower PCP removal efficiency was obtained for the 20x40 U.S. mesh soil conditioned at 60 C than that for the same soil fraction aged at room temperature. (Copyright (c) 1993 Water Environment Federation).

• Research Organization: Cincinnati Univ., OH (United States). Dept. of Civil and Environmental Engineering
• OSTI ID: 7297390
• Report Number(s): PB-94-159266/XAB
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
EXTRACTION
SEPARATION PROCESSES
SOILS
SOLVENT EXTRACTION