April 3, 2017

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Dogus Meric Published in the Journal of Geotechnical and Geoenvironmental Engineering

Dogus Meric (Illinois) is the lead author of an article published in the American Society of Civil Engineers (ASCE) Journal of Geotechnical and Geoenvironmental Engineering on March 17, 2017.

The article, entitled "Nonlinear, Nonequilibrium One-Dimensional Large-Strain Consolidation Coupled Contaminant Transport Model of Capped Sediments," considers numerical modeling to estimate transient chemical flux leaving the capped sediments. The new model offers the use of site-specific time-dependent sorption in addition to its previously existing capabilities on finite-strain consolidation, and associated transient pore water flux.

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−Br− and Cl−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.

More Information

For more information regarding the article, visit: ASCE Geotechnical and Geoenvironmental Engineering Journal
For more information on environmental compliance, contact Dogus Meric at This email address is being protected from spambots. You need JavaScript enabled to view it..
Learn more about Dogus at: https://www.linkedin.com/in/dogusmeric/