Exit condition for miscible displacement experiments in finite columns

The one-dimensional solute transport is analyzed with the convection-dispersion model, including first and zeroth order irreversible reaction. A simple analytical expression is derived for the residence concentration which depends explicitly on the exit conditions at the end of the soil column or layer. The validity of the flux concentration solution ignoring the finite length of the column is also discussed by relating the exit conditions to the Peclet number.


Published in:
Soil Science, 153, 3, 165-171
Year:
1992
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 Record created 2005-12-09, last modified 2018-03-17

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