Diffusion and adsorption of benzene in Regina clay

The diffusion and adsorption coefficients for benzene were measured for a glaciolacustrine clay using the single- and double-reservoir methods, batch tests, and organic carbon content correlations. Single- and double-reservoir diffusion test cells and experimental procedures were specifically developed for volatile organic chemicals. Analytical methods based on solvent extraction with gas chromatography - flame ionization detection and purge and trap gas chromatography - mass spectrometry were used for the analysis of aqueous benzene solutions in the 0.5 µg/L to 500 mg/L range. The measured effective diffusion coefficient was 0.01 m2/a (3.2 × 10-6 cm2/s), and adsorption coefficients ranged from 0.1 to 1.0 mL/g. The diffusion cell tests indicate relatively low levels of retardation for benzene as it moves in clay soils with low organic carbon content.Key words: adsorption, diffusion, benzene, Regina clay.

[1]  W. Macintyre,et al.  Liquid Chromatography Applications to Determination of Sorption on Aquifer Materials , 1988 .

[2]  S. Karickhoff,et al.  SORPTION OF HYDROPHOBIC POLLUTANTS ON NATURAL SEDIMENTS , 1979 .

[3]  R. Gillham,et al.  Diffusion of nonreactive and reactive solutes through fine-grained barrier materials , 1984 .

[4]  R. Rowe,et al.  A laboratory estimation of diffusion and adsorption coefficients for several volatile organics in a natural clayey soil , 1992 .

[5]  E. Sudicky,et al.  Diffusion of volatile organic compounds in natural clay deposits: Laboratory tests , 1992 .

[6]  Laboratory simulation of diffusion in contaminated marine sediments , 1990 .

[7]  C. T. Chiou,et al.  Partition equilibriums of nonionic organic compounds between soil organic matter and water. , 1983, Environmental science & technology.

[8]  Robert M. Quigley,et al.  EFFECT OF MULTIPLE CONTAMINANT MIGRATION ON DIFFUSION AND ADSORPTION OF SOME DOMESTIC WASTE CONTAMINANTS IN A NATURAL CLAYEY SOIL , 1989 .

[9]  John A. Cherry,et al.  Diffusive Disappearance of Immiscible‐Phase Organic Liquids in Fractured Geologic Media , 1994 .

[10]  John A. Cherry,et al.  Contaminant Migration in Saturated Unconsolidated Geologic Deposits , 1982 .

[11]  Charles D. Shackelford,et al.  Laboratory diffusion testing for waste disposal — A review , 1991 .

[12]  Li Yuan-hui,et al.  Diffusion of ions in sea water and in deep-sea sediments , 1974 .

[13]  P. Domenico,et al.  Physical and chemical hydrogeology , 1990 .

[14]  John A. Cherry,et al.  Diffusive contaminant transport in natural clay: a field example and implications for clay-lined waste disposal sites , 1989 .

[15]  J. C. McFarlane,et al.  Adsorption and desorption of benzene in two soils and montmorillonite clay. , 1980, Environmental science & technology.

[16]  W. Weber,et al.  Effect of solids concentration on the sorptive partitioning of hydrophobic pollutants in aquatic systems. , 1983, Environmental science & technology.

[17]  J. Barker,et al.  Dissolution of monoaromatic hydrocarbons into groundwater from gasoline-oxygenate mixtures , 1992 .

[18]  P. Suresh C. Rao,et al.  Partitioning of aromatic constituents into water from gasoline and other complex solvent mixtures , 1991 .

[19]  W. Roy,et al.  Mobility of organic solvents in water-saturated soil materials , 1985 .