Modeling Elution Histories of Copper and Lead from Contaminated Soil Treated by Poly(amidoamine) Dendrimers
Publication: Journal of Environmental Engineering
Volume 134, Issue 4
Abstract
A dynamic “two-site” model was formulated and tested for simulating the elution histories of copper and lead from a contaminated soil treated by poly(amidoamine) dendrimers. In the model, the metal sorption sites of the soil were divided into two compartments: one with a fast desorption rate and the other with a slow desorption rate. The model was tested for simulating and predicting and elution histories obtained from column experiments. Compared to the classical “one-site” model and the modified “gamma distribution” model, the “two-site” model not only provides much improved power for simulating the observed metal elution data, but also can more accurately predict the metal elution histories under various experimental conditions including initial metal concentration in soil, dendrimer concentration, and pH.
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Acknowledgments
The writers thank the USGS-Alabama Water Resources Research Institute and are grateful for a U.S. EPA grant (Grant No. GR832373) for partial financial support. Dr. Clement was, in part, supported by the Frontier Project of the Korea Ministry of Science and TechnologyKMST. Y. Xu is grateful for a competitive graduate fellowship from the AU College of Engineering.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 134 • Issue 4 • April 2008
Pages: 238 - 246
Copyright
© 2008 ASCE.
History
Received: Jul 28, 2006
Accepted: Jul 19, 2007
Published online: Apr 1, 2008
Published in print: Apr 2008
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