Abstract
A model was developed to characterize the transport of volatile or-ganics in variably saturated media. Water phase flow and transport and density dependent gas phase flow and transport were simulated. First order rate expressions using overall rate transfer coefficients were employed to incorporate dissolution and volatilization of immobilized residual organic compounds. Partitioning of solute between the water and gas phases was represented by a similar rate expression based on Henry’s law. The role of the soil gas phase in increasing subsurface contamination from volatile organics, and in dissipating residual amounts of these compounds was illustrated.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Abrióla, L. M., and G. F. Pinder, ‘A multiphase approach to the modeling of porous media contamination by organic compounds’, 2. numerical simulation, Water Resour. Res., 21(1),19–28, 1985b.
Baehr, A. L., and M. Y. Corapcioglu, ‘A compositional multiphase model for groundwater contamination by petroleum products’, 2. numerical solution, Water Resour. Res., 23(1),201–213,1987.
Baehr, A. L., ‘Selective transport of hydrocarbons in the unsaturated zone due to aqueous and vapor phase partitioning’, Water Resour. Res., 23(10), 1926–1938, 1987.
Brooks, P. M., and A. T. Corey, ‘Hydraulic properties of porous media’, Hydrology Paper No. 3, Univ. Fort Collins, Colo., 1966.
Dilling, W. L., ‘Interphase transfer processes IF, J. Environmental Science and Technology, 11(4) 405–409, 1977.
Feenstra S., ‘Subsurface contamination form spills of dense non-aqueous phase liquid (DNAPL) chemicals’, paper presented at The Second Annual Technical Seminar on Chemical Spills, Environment Canada, Feb. 5–7, Montreal, Quebec, 1986.
Frind, E. O., ‘Simulation of long-term transient density-dependent transport in groundwater’, Adv. Water Resour., 5, 73–86, 1982.
Huyakorn, P. S., and G. F. Pinder, Computational Methods in Subsurface Flow, Academic Press, New York, 1983.
Huyakorn, P. S., J. W. Mercer, and D.S. Ward, ‘Finite element matrix and mass balance computational schemes for transport in variably saturated porous media’, Water Resour. Res., 21(3),346–358, 1985.
Jury, W. A., W. F. Spencer, and W. J. Farmer, ‘Behavior assessment model for trace organics in soil: I. model description’, J. Env. Qual., 12(4), 558–563, 1985.
Millington, R. J., and J. M. Quirk, ‘Permeability of porous solids’, Trans. Faraday Soc, 57, 1200–1207, 1961.
Pfannkuch, H. O., ‘Determination of contaminant source strength from mass exchange processes at the petroleum/groundwater interface in shallow aquifer systems’, in Petroleum Hydrocarbons and Organic Chemicals in Groundwater, pp. 111–129, National Water Well Association, Nov 5–7, Houston, 1984.
Sitar, N., J. R. Hunt, and K. S. Udell, ‘Movement of nonaqueous liquids in groundwater’, in Proc. of Geotechnical Practice for Waste Disposal 1987, 205–223, GT Div. ASCE, Ann Arbor Michigan, June 15–17, 1987.
Thibodeaux, L. J., ‘Estimating the air emissions of chemicals from hazardous waste landfills’, Journal of Hazardous Materials, 4, 235–244, 1981.
Van Genuchten, M., ‘A closed-form equation for predicting the hydraulic conductivity of unsaturated soils’, Soil Sci. Soc. Am. J., 44, 892–898, 1980.
Vilker, V. L., and R. S. Parnas, ‘Analysis of volatile hydrocarbon losses from quiescent water solutions’, Water Resour. Res., 22(5) 812–818, 1986.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 1989 Kluwer Academic Publishers
About this chapter
Cite this chapter
Sleep, B.E., Sykes, J.F. (1989). Mobility of Residual Phase Organics in the Vadose Zone. In: Morel-Seytoux, H.J. (eds) Unsaturated Flow in Hydrologic Modeling. NATO ASI Series, vol 275. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-2352-2_20
Download citation
DOI: https://doi.org/10.1007/978-94-009-2352-2_20
Publisher Name: Springer, Dordrecht
Print ISBN: 978-94-010-7559-6
Online ISBN: 978-94-009-2352-2
eBook Packages: Springer Book Archive