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Dispersion in Soil Columns: Effect of Boundary Conditions and Irreversible Reactions
Author(s) -
Parlange J.Y.,
Starr J. L.
Publication year - 1978
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1978.03615995004200010004x
Subject(s) - dispersion (optics) , adsorption , displacement (psychology) , column (typography) , convection , boundary (topology) , mechanics , thermodynamics , chemistry , materials science , mathematics , physics , mathematical analysis , geometry , optics , psychology , connection (principal bundle) , psychotherapist
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.