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RECORD NUMBER: 35 OF 49

OLS Field Name OLS Field Data
Main Title Remediation of Contaminated Soils by Solvent Flushing.
Author Augustijn, D. C. M. ; Jessup, R. E. ; Rao, P. S. C. ; Wood., A. L. ;
CORP Author Florida Univ., Gainesville. Dept. of Soil and Water Science.;Robert S. Kerr Environmental Research Lab., Ada, OK.;Electric Power Research Inst., Palo Alto, CA.
Publisher c1994
Year Published 1994
Report Number EPRI-RP-2879-7, EPA-R-820678; EPA/600/J-94/169;
Stock Number PB94-162740
Additional Subjects Waste disposal ; Volatile organic compounds ; Ground water ; Water pollution control ; Superfund ; Soils ; Contamination ; Solvent extraction ; Materials recovery ; Remedial action ; Mathematical models ; Injection ; Flushing ; Alcohols ; Reduction(Chemistry) ; Environmental transport ; Naphthalene ; Carbinols ; Tables(Data) ; Reprint ; Chemical spills ; Cleanup
Holdings
Library Call Number Additional Info Location Last
Modified
Checkout
Status
NTIS  PB94-162740 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 09/01/1994
Collation 18p
Abstract
Solvent flushing is a potential technique for remediating a waste disposal/spill site contaminated with organic chemicals. This technique involves the injection of a solvent mixture (e.g., water plus alcohols) that enhances contaminant solubility, reduces the retardation factor, and increases the release rates of the contaminants. A simulation model is developed to predict contaminant elution curves during solvent flushing for the case of one-dimensional, steady flow through a contaminated medium. Column experiments are conducted with a Eustis fine sand that is initially equilibrated with an aqueous naphthalene solution, and then eluted with different methanol-water mixtures to remove the naphthalene. The model simulations, based on parameter values estimated from literature data agree well with the measured elution profiles. Solvent flushing experiments, where the soil was initially equilibrated with a solution of naphthalene and anthracene, show that compounds with different retardation factors are separated at low cosolvent contents, while coelution of the compounds occurs at higher contents. (Copyright (c) ASCE 1994.)