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Dispersion in Soil Columns: Effect of Boundary Conditions and Irreversible Reactions¹

ABSTRACT

A closed form approximate analytical solution is provided which describes the transport of a solute in a soil column. The effects of convection, dispersion, and adsorption are included. The latter can include both linear adsorption and first- or zero-order reactions. The effect of the finite length of a soil column on the miscible displacement of the solute is discussed in detail. It is shown in particular that the standard solution used in the past is accurate to describe the breakthrough curve but not the profile within the column.

¹ Contribution from the Connecticut Agric. Exp. Stn., New Haven, CT 06504.

² Former Mathematician and Associate Soil Scientist, respectively. Senior author is now Professor, College of Forest Resources, Univ. of Washington, Seattle, WA 98195.

Received for publication March 3, 1977. Accepted for publication September 12, 1977.

This article has been cited by other articles:

				S. T. Trudgill, S. T. Trudgill, and D. J. Briggs Soil and land potential Progress in Physical Geography, June 1, 1979; 3(2): 283 - 299. [PDF]