• Comparison of Contaminant Transport between the Centrifuge Model and the Advection Dispersion Equation Model
  • Young, Horace-Moo;Kim, Tae-Hyung;
  • Department of Civil and Environmental Engineering, Lehigh University;Department of Civil and Environmental Engineering, Chung-Ang University;
Abstract
The centrifuge test result on capped sediment was compared to the advection- dispersion equation proposed for one layered to predict contaminant transport parameters. The fitted contaminant transport parameters for the centrifuge test results were one to three orders of magnitude greater than the estimated parameters from the advection-dispersion equation. This indicates that the centrifuge model over estimated the contaminant transport phenomena. Thus, the centrifuge provides a non-conservative approach to modeling contaminant transport. It should be also noted that the advection-dispersion equation used in this study is a one layered model. Two layered modeling approaches are more appropriate for modeling this data since there are two layers with different partitioning coefficients. Further research is required to model the centrifuge test using two-layered advection-dispersion models.

Keywords: advection-dispersion equation;one layered model;contaminant transport;centrifuge;

References
  • 1. Arulanandan, K., Thompson P.Y., Kutter B.L., Meegoda, N.J., Muraleetharan, K.K. and Yogachandran, C. (1988), 'Centrifuge modeling of transport processes for pollutant in soils', Journal of Geotechnical Engineering, 144, pp. 185-205 (1988)
  •  
  • 2. Di Toro, D.M., Jens, J.S. and Ciarcia, D., 'Diffusion and partitioning of hexachlorobipheny in sediments', Environmental Science and Technotogy, 1, pp. 1169-1176 (1985)
  •  
  • 3. Fetter, C.W., Contaminant hydrogeology. 2nd Ed., Prentice Hall, Upper Saddle River, NJ (1999)
  •  
  • 4. Moo-Young, Horace and Kim, T.-H., 'Expehmental Investigation of Consolidation Induced Contaminant Transport Using a Centrifuge', 한국지하수토양학회논문집, 8(1), pp. 35-41 (2003)
  •  
  • 5. Myers, T.E., Averett, D.E., Olin. T.J., Palermo, M.R., Reible, D.D., Martin, J.L. and McCutcheon, S.C., Estimating con-taminant losses from components of remediation alternatives for contaminated sediment, 905-R96-001, Great Lakes National Program Office, U.S. Environmental Protection Agency, Chicago, IL (1996)
  •  
  • 6. 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, Chicago, IL (1998)
  •  
  • 7. Perkins, T.K. and Johnson, O.C., 'A review of diffusion and dispersion in porous media', Society of Petroleum Engineering Journal, 3, pp.70-84 (1963)
  •  
  • 8. Thibodeaux, L.J., Reible, D.D., Bosworth, W.S. and Sarapas, L.C., 'A theoretical evaluation of the effectiveness of capping PCB contaminated New Bedford Harbor sediment, Hazardous Substance Research Center Final Report, Louisiana State University, Baton Rouge, LA (1998)
  •  
  • 9. Thoma, G.J., Reible, D.D., Valsaraj, K.T, Thibodeaux, L.J., 'Efficiency of capping contaminated sediments in-situ: 2. Mathematics of diffusion-adsorption in the capping layer', Environmental Science and Technology, 27, pp. 2412-2419 (1993)
  •  
  • 10. van Genuchten, M. Th. and Alves, W.J., Analytical soludons for the one dimensional advecdve-dispersion solute transport equation, Technical Bulletin No. 1661. U.S. Department of Agriculture (1993)
  •  
  • 11. 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/adsorption in the capping layer', Environmental Science and Technology, Vol. 25, pp.1578-1584 (1991)
  •  

This Article

  • 2003; 8(3): 8-12

    Published on Sep 1, 2003