Model Prediction of Long-Term Reactive Core Mat Efficacy for Capping Contaminated Aquatic Sediments

Additional Info

  • Practice Areas: Sediment Assessment and Remediation
  • Event or Publication: Journal of Environmental Engineering
  • Title: Model Prediction of Long-Term Reactive Core Mat Efficacy for Capping Contaminated Aquatic Sediments
  • All Authors: Dogus Meric, Ferdinand Hellweger, Sara Barbuto, Nima Rahbar, Akram N. Alshawabkeh, Thomas C. Sheahan
  • Geosyntec Authors: Dogus Meric
  • Citation: Dogus Meric, Ferdinand Hellweger, Sara Barbuto, Nima Rahbar, Akram N. Alshawabkeh, Thomas C. Sheahan, "Model Prediction of Long-Term Reactive Core Mat Efficacy for Capping Contaminated Aquatic Sediments." J. Environ. Eng., April 2013, 139(4), 564_575.
  • Date: 2013
  • Type: Publication (Online)

This paper describes the development and validation of a one-dimensional, large-strain consolidation-coupled contaminant transport model.

The RCM-XPORT2 model uses the CS2 large-strain consolidation approach coupled with reactive advective/dispersive solute transport through a deforming saturated porous media, capped with a reactive sequestering geomaterial known as a reactive core mat (RCM). Validation of the model is presented by simulating consolidation-coupled contaminant transport experiments performed on naphthalene-spiked sediment from the Neponset River in Milton, Massachusetts. Finally, the paper presents a hypothetical case study of pre- and post-RCM application polychlorinated biphenyl (PCB) fate and transport in the Lower Neponset River using RCM-XPORT2 and U.S. EPA Water Quality Analysis Simulation Program surface water quality model. The Neponset River case study evaluates the long-term effect of sediment RCM capping on reducing the water column PCB concentration.

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