[KSCI] Korea Science Citation Index Service

Experimental Investigation of Consolidation Induced Contaminant Transport Using a Centrifuge

Horace, Moo-Young (Department of Civil and Environmental Engineering, Lehigh University)
Kim, Tae-Hyung (Department of Civil and Environmental Engineering, Lehigh University)

Publication Information

Journal of Soil and Groundwater Environment / v.8, no.1, 2003 , pp. 35-41 More about this Journal

Abstract

Laboratory procedures are available for estimating contaminant migration from sediment into caps by diffusion, but diffusion may not be the major process affecting capping effectiveness. Movement of contaminated pore water from sediment into caps due to sediment consolidation during and after cap placement may be much more significant than contaminant diffusion into caps. To verify this phenomenon, model tests were conducted by utilizing a research centrifuge. In this study, test was modeled for 22.5 hours at 100 g, which modeled a contaminant migration time of 25 years for a prototype that was 100 times larger than the centrifuge model. Centrifuge test results illustrate that advection and dispersion due to consolidation are dominating the migration of contaminants.

Keywords

centrifuge; consolidation; sediment; contaminant transport; advection;

Citations & Related Records

Reference

1	Ibrahim, I., Centrifugal Modeling of Water Movement in Unsaturated Soils. Ph.D. Thesis, University of Colorado, Boulder (1990)
2	Palermo, M. and Wilson, J., Dredging State of the Practice: Corps of Engineers Prospective. Dredging and Management of Dredged Material: Geotechnical Special Publication 65, Meegoda JN, Wakeman TH, Arulmoli A, Librizzi W (Eds.), American Society of Civil Engineers, Reston, pp. 1-11 (1998)
3	National Research Council (NRC), Contaminated Sediment in Ports and Waterways: Cleanup strategies and technologies. National Academy Press, Washington, D.C. (1997)
4	Das, B. M., Principles of Geotechnical Engineehng, P.S.W. Kent. New York, NY (2001)
5	Thoma, G. J., Reible, D. D., Valsaraj, K.T. and Thibodeaux, L. J., 'Efficiency of Capping Contaminated Sediments In-Situ: 2. Mathematics of Diffusion-Adsorption in the Capping Layer', Ervironmental Science and Technology, 27, pp. 2412-2419 (1993) DOI
6	Wang, X. Q., Thibodeaux, L. J., Valsaraj, K. and Reible, D. D., 'The Efficiency of Capping Contaminated Bed Sediments In-Situ-Lab-Scale Experiments on Diffusion/Adsorpdon in the Capping Layer', Environmental Science and Technology, 25, pp. 1578-1584 (1991) DOI
7	Cargill, K. W., and Ko, H. Y., 'Centrifugal Modeling of Transient Water Flow', Journal of Geotechnical Engineering, 109, pp. 536-555 (1983) DOI
8	Palermo, M., Maynord, S., Miller, J. and Reible, D.D., Guidance for In-situ Subaqueous Capping of Contaminated Sediment. EPA 905-B96-004., Great Lakes National Program Office, U.S. Environmental Protection Agency Chicago, IL (1998)