Dilution Effect of the Apparatus on Contaminant Transport Parameters Assessed by Column Testing
Publication: Journal of Geotechnical and Geoenvironmental Engineering
Volume 141, Issue 9
Abstract
This technical note describes a method aimed at correcting the dilution effect of the apparatus on the solute transport parameters determined by column testing. The method requires quantification of the dead volume (i.e., not drainable during sample collection) of the permeation apparatus and makes use of a closed-form solution to the advection-dispersion-reaction equation (ADRE) equation used to infer transport parameters from column test results. Simulations of the dilution effect were performed and actual experimental data were analyzed, with reference to testing equipment frequently used in column studies (flexible-wall permeameter and bladder accumulators) and to porous materials commonly used in pollutant containment [geosynthetic clay liners (GCLs) and compacted clay liners (CCLs)]. Results showed that the dilution effect of the testing apparatus can significantly affect the determined transport parameters, in particular by increasing the retardation factor and reducing the diffusion coefficient.
Get full access to this article
View all available purchase options and get full access to this article.
References
ASTM. (2010). “Standard test methods for measurement of hydraulic conductivity of saturated porous materials using a flexible wall permeameter.” D5084-10, West Conshohoken, PA.
Brenner, H. (1962). “The diffusion model of longitudinal mixing in beds of finite length. Numerical values.” Chem. Eng. Sci., 17(4), 229–243.
Freeze, R. A., and Cherry, J. A. (1979). Groundwater, Prentice-Hall, Englewood Cliffs, NJ.
Lange, K., Rowe, R. K., and Jamieson, H. (2010). “The potential role of geosynthetic clay liners in mine waters treatment systems.” Geotext. Geomembr., 28(2), 199–205.
Manassero, M. (1997). “Pollutant containment via passive barriers”, Proc., 14th ICSMFE Hamburg. Discussion Session 6.1, Vol. 4, Balkema, Rotterdam, Netherlands, 2527–2534.
Mazzieri, F. (2012). “Assessment of heavy metals retention in GCLs by column and batch tests.” GeoCongress 2012: State of the Art and Practice in Geotechnical Engineering, R. D. Hryciw, A. Athanasopoulos-Zekkos, and N. Yesiller, eds., ASCE, Reston, VA, 3447–3456.
Mazzieri, F., Di Emidio, G., Fratalocchi, E., Di Sante, M., and Pasqualini, E. (2013). “Permeation of two GCLs with an acidic metal-rich synthetic leachate.” Geotext. Geomembr., 40, 1–11.
Mazzieri, F., Van Impe, P. O., Van Impe, W. F., and Constales, D. (2002). “Effect of consolidation on contaminant transport parameters of compacted clays.” Proc., 4th ICEG, Environmental Geotechnics, L. G. de Mello and M. Almeida, eds., Swets & Zeitlinger, Lisse, Netherlands, 183–188.
Rowe, K. R., Quigley, R. M, Brachman, R. W. I., and Booker, J. R. (2004). Barrier systems for waste disposal facilities, 2nd Ed., Spon Press, London, 587.
Shackelford, C. D. (1994). “Critical concept for column testing.” J. Geotech. Eng., 1804–1828.
Shackelford, C. D. (1995). “Cumulative mass approach for column testing.” J. Geotech. Eng., 696–703.
Shackelford, C. D., and Redmond, P. L. (1995). “Solute breakthrough curves for processed kaolin at low flow rates.” J. Geotech. Eng., 17–32.
Information & Authors
Information
Published In
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Oct 8, 2014
Accepted: Apr 7, 2015
Published online: May 7, 2015
Published in print: Sep 1, 2015
Discussion open until: Oct 7, 2015
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.