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Related Experiment Videos

MODFLOW/MT3DMS-based reactive multicomponent transport modeling.

H Prommer1, D A Barry, C Zheng

  • 1Section of Hydrology and Ecology, Faculty of Civil Engineering and Geoscience, Delft University of Technology, P.O. Box 5048, 2600 GA Delft, The Netherlands. henning.prommer@csiro.au

Ground Water
|March 27, 2003
PubMed
Summary
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This study introduces PHT3D, a reactive transport model for groundwater. It simulates geochemical processes and contaminant remediation in aquifers, offering versatile applications for environmental management.

Area of Science:

  • Environmental science
  • Hydrogeology
  • Geochemistry

Background:

  • Accurate simulation of reactive multicomponent transport in saturated porous media is crucial for understanding groundwater quality and remediation.
  • Existing models often lack the flexibility to incorporate diverse geochemical reactions and complex contaminant behaviors.

Purpose of the Study:

  • To present a novel three-dimensional reactive multicomponent transport model, PHT3D, for saturated porous media.
  • To couple the MT3DMS transport simulator with the PHREEQC-2 geochemical code for enhanced simulation capabilities.
  • To demonstrate the model's versatility in simulating geochemical evolution and contaminant remediation in aquifers.

Main Methods:

  • Development of PHT3D using a split-operator technique, integrating MT3DMS and PHREEQC-2.

Related Experiment Videos

  • Incorporation of equilibrium and kinetically controlled reactive processes, including aqueous complexation, mineral precipitation/dissolution, and ion exchange.
  • Validation through five literature benchmarks and a new 3D sample problem.

    • Main Results:

    • PHT3D successfully simulates a wide range of geochemical reactions relevant to aquifer systems.
    • The model demonstrates capability in handling both pristine and contaminated aquifer scenarios.
    • Extensible database allows inclusion of specific processes like NAPL dissolution and microbial activity.

    Conclusions:

    • PHT3D provides a robust and flexible tool for simulating reactive transport in groundwater.
    • The model is applicable to assessing geochemical evolution and designing remediation strategies for contaminated aquifers.
    • Its adaptability supports the simulation of natural and enhanced attenuation of various contaminants.