A compositional simulator for modeling surfactant enhanced aquifer remediation, 1 formulation

A compositional simulator for modeling surfactant enhanced aquifer remediation, 1 formulation We describe a three-dimensional, multicomponent, multiphase compositional finite-difference simulator for application to the analysis of contaminant transport and s urfactant e nhanced a quifer r emediation (SEAR) of n on a queous- p hase l iquid (NAPL) pollutants. Mixtures of surfactant, water and NAPL can form many types of micellar and microemulsion phases with a complex and important dependence on many variables of which the dilute aqueous solution typically assumed in SEAR models is just one example. The phase behavior model is central to our approach and allows for the full range of the commonly observed micellar and microemulsion behavior pertinent to SEAR. The other surfactant related properties such as adsorption, interfacial tension, capillary pressure, capillary number and microemulsion viscosity are all dependent on an accurate phase behavior model. This has proven to be a highly successful approach for surfactant enhanced oil recovery modeling, so it was adapted to SEAR modeling. However, there are many significant differences between petroleum and environmental applications of surfactants, so many new features have been added to model contaminant transport and remediation and these are described and illustrated for the first time here. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Contaminant Hydrology Elsevier

A compositional simulator for modeling surfactant enhanced aquifer remediation, 1 formulation

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Publisher
Elsevier
Copyright
Copyright © 1996 Elsevier Ltd
ISSN
0169-7722
eISSN
1873-6009
D.O.I.
10.1016/0169-7722(95)00106-9
Publisher site
See Article on Publisher Site

Abstract

We describe a three-dimensional, multicomponent, multiphase compositional finite-difference simulator for application to the analysis of contaminant transport and s urfactant e nhanced a quifer r emediation (SEAR) of n on a queous- p hase l iquid (NAPL) pollutants. Mixtures of surfactant, water and NAPL can form many types of micellar and microemulsion phases with a complex and important dependence on many variables of which the dilute aqueous solution typically assumed in SEAR models is just one example. The phase behavior model is central to our approach and allows for the full range of the commonly observed micellar and microemulsion behavior pertinent to SEAR. The other surfactant related properties such as adsorption, interfacial tension, capillary pressure, capillary number and microemulsion viscosity are all dependent on an accurate phase behavior model. This has proven to be a highly successful approach for surfactant enhanced oil recovery modeling, so it was adapted to SEAR modeling. However, there are many significant differences between petroleum and environmental applications of surfactants, so many new features have been added to model contaminant transport and remediation and these are described and illustrated for the first time here.

Journal

Journal of Contaminant HydrologyElsevier

Published: Aug 1, 1996

References

  • Partitioning tracer test for detection, estimation, and remediation performance assessment of subsurface nonaqueous phase liquids
    Jin, M.; Delshad, M.; Dwarakanath, V.; McKinney, D.C.; Pope, G.A.; Sepehrnoori, K.; Tilburg, C.E.; Jackson, R.E.
  • Enhanced Oil Recovery
    Lake, L.W.
  • Compositional simulation of groundwater contamination by organic compounds: 1. Model development and verification
    Sleep, B.E.; Sykes, J.F.

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