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Nonlinear Nonequilibrium One-Dimensional Large-Strain Consolidation-Coupled Contaminant Transport Model of Capped Sediments.
- Source :
-
Journal of Geotechnical & Geoenvironmental Engineering . Aug2017, Vol. 143 Issue 8, p1-9. 9p. - Publication Year :
- 2017
-
Abstract
- This paper describes the development and multistep validation of a one-dimensional, large strain consolidation coupled contaminant transport model with nonlinear and nonequilibrium sorption kinetics. The RCM-XPORT2K model uses the CS2 large strain consolidation approach for modeling the deforming saturated porous medium consolidating under a surcharge stress, coupled with reactive advective/dispersive solute transport through the medium, capped with a thin-layered reactive sequestering geocomposite known as a reactive core mat (RCM). In addition to assumptions made in previously developed, one-dimensional consolidation coupled contaminant transport model RCM-XPORT2, the RCM-XPORT2K model accounts for sediment- and sorbent-specific sorption kinetics to model nonlinear, and nonequilibrium sorption behavior. Validation of the model is presented by simulating: (1) sorption kinetics tests performed on sediment sampled from Neponset River, Milton, Massachusetts, USA and a commercial product, CETCO Organoclay PM-199; (2) solute transport from the large strain consolidation coupled contaminant transport tests with Br- and Cl- using a high water content inert silt sample (New York Silt); and (3) the naphthalene transport and breakthrough times observed in upflow column tests with Neponset River sediment with various overlying cap layers. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 10900241
- Volume :
- 143
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- Journal of Geotechnical & Geoenvironmental Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 122751849
- Full Text :
- https://doi.org/10.1061/(ASCE)GT.1943-5606.0001655