Return to HydroWeb HomepageISSN 1058-3912
Electronic journal of the International Association
for Environmental Hydrology
On the World Wide Web at http://www.hydroweb.com
JEH Volume 7 (1999), Paper 9, August 1999
Posted August 12, 1999
MODELING OF CHEMICAL AND ELECTRICAL FLOWS IN LOW PERMEABILITY SOILS
UNDER ELECTRICAL GRADIENT
Geonha Kim
Research Institute for Environmental Technology and Sustainable
Development
Korea University, Seoul, Korea
ABSTRACT
If an electrical gradient is imposed on wet fine-grained soil, contaminant
transport occurs by a complex phenomenon called electrokinetics. Even though
electrokinetics has been proven to be feasible in bench-scale experimental
studies, there is still a lack of thorough understanding of its cleanup
mechanisms. A theoretical model is derived for electrokinetic phenomena,
a numerical formulation is presented, and a model is validated. Coupled
flow theory is applied to derive the governing equations. The model is
implemented by computer using finite element methods. Validation is based
on one-dimensional experimental data from the literature. The model provides
an effective tool to better understand the electrokinetic extraction processes
and to optimize operation parameters.
Reference: Kim, Geonha; Modeling of Chemical and Electrical
Flows in Low Permeability Soils Under Electrical Gradient, Journal
of Environmental Hydrology, Vol. 7, Paper 9, August 1999.
Geonha Kim
Research Institute for Environmental Technology and Sustainable Development
Korea University
Anam-dong, Seoungbuk-ku
137-701 Seoul
Korea
Email:warmheart@netsgo.co.kr