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Modeling of Natural Organic Matter Transport Processes in Groundwater

A forced-gradient tracer test was conducted at the Georgetown site to study the transport of natural organic matter (NOM) in groundwater. In particular, the goal of this experiment was to investigate the interactions between NOM and the aquifer matrix. A detailed three-dimensional characterization of the hydrologic conductivity heterogeneity of the site was obtained using slug tests. The transport of a conservative tracer (chloride) was successfully reproduced using these conductivity data. Despite the good simulation of the flow field, NOM breakthrough curves could not be reproduced using a two-site sorption model with spatially constant parameters. Preliminary results suggest that different mechanisms for the adsorption/desorption processes, as well as their spatial variability, may significantly affect the transport and fate of NOM

National Institute of Environmental Health Sciences

Author: Jim Yeh, T.C.
Mas-Pla, Josep
McCarthy, John F.
Williams, Thomas M.
Date: 2018 June 5
Abstract: A forced-gradient tracer test was conducted at the Georgetown site to study the transport of natural organic matter (NOM) in groundwater. In particular, the goal of this experiment was to investigate the interactions between NOM and the aquifer matrix. A detailed three-dimensional characterization of the hydrologic conductivity heterogeneity of the site was obtained using slug tests. The transport of a conservative tracer (chloride) was successfully reproduced using these conductivity data. Despite the good simulation of the flow field, NOM breakthrough curves could not be reproduced using a two-site sorption model with spatially constant parameters. Preliminary results suggest that different mechanisms for the adsorption/desorption processes, as well as their spatial variability, may significantly affect the transport and fate of NOM
Document access: http://hdl.handle.net/2072/319219
Language: eng
Publisher: National Institute of Environmental Health Sciences
Rights: Tots els drets reservats
Subject: Aigües subterrànies
Groundwater
Aigües subterrànies -- Contaminació
Groundwater -- Pollution
Models hidrològics
Hydrologic models
Title: Modeling of Natural Organic Matter Transport Processes in Groundwater
Type: info:eu-repo/semantics/article
Repository: Recercat

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