Numerical model for the uptake of groundwater contaminants by phreatophytes

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Conventional solute transport models do not adequately account for the effects of phreatophytic plant systems on contaminant concentrations in shallow groundwater systems. A numerical model was developed and tested to simulate threedimensional reactive solute transport in a heterogeneous porous medium. Advective-dispersive transport is coupled to biodegradation, sorption, and plantbased attenuation processes including plant uptake and sorption by plant roots. The latter effects are a function of the physical-chemical properties of the individual solutes and plant species. Models for plant uptake were tested and evaluated using the experimental data collected at a field site comprised of hybrid poplar trees. A non-linear equilibrium isotherm model best represented site conditions.
Publication type Conference Paper
Publication Subtype Conference Paper
Title Numerical model for the uptake of groundwater contaminants by phreatophytes
ISBN 9781845641153
DOI 10.2495/WP080361
Volume 111
Year Published 2008
Language English
Contributing office(s) Toxic Substances Hydrology Program
Description 9 p.
Larger Work Type Book
Larger Work Subtype Conference publication
Larger Work Title WIT Transactions on Ecology and the Environment
First page 371
Last page 379
Conference Title 9th International Conference on Modelling, Monitoring and Management of Water Pollution, Water Pollution 2008
Conference Location Alicante, Spain
Conference Date June 9-11,2008
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