Record Display for the EPA National Library Catalog


Main Title Cosolvent Effects on Sorption and Mobility of Organic Contaminants in Soils.
Author Wood, A. L. ; Bouchard, D. C. ; Brusseau, M. L. ; Rao, P. S. C. ;
CORP Author Florida Univ., Gainesville.;Robert S. Kerr Environmental Research Lab., Ada, OK.
Publisher c1990
Year Published 1990
Report Number EPA-R-814512; EPA/600/J-90/394;
Stock Number PB91-171504
Additional Subjects Naphthalene ; Phenanthrene ; Diuron ; Sands ; Sorption ; Transport properties ; Solvents ; Methanol ; Water ; Solubility ; Land pollution ; Ground water ; Herbicides ; Thermodynamic properties ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB91-171504 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 15p
Batch equilibrium and column miscible displacement techniques were used to investigate the influence of an organic cosolvent (methanol) on the sorption and transport of three hydrophobic organic chemicals (HOCs) - naphthalene, phenanthrene, and diuron herbicide - in a sandy surface soil (Eustis fine sand). Equilibrium sorption constant (K) values calculated from batch and column data exhibited an inverse log-linear dependence on the volume fraction (fc) of methanol in the mixed solvent. The slope of the log-linear plot was approximately equal to the logarithm of the ratio of the HOC solubilities in neat cosolvent and water. K values obtained from breakthrough curves were comparable to those estimated from equilibrium sorption isotherms. Long-term exposure to methanol-water mixtures had little effect on sorption and transport properties of the soil, but column retardation factors were influenced by the short-term solvent exposure history prior to solute elution.