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Frontal movement of aqueous solutions during re distribution through air dry sand columns as a function of column length and time



Frontal movement of aqueous solutions during re distribution through air dry sand columns as a function of column length and time



Soil Science 125(5): 320-325



The frontal movement during redistribution of unsorbed waste fronts through an air-dried sand was measured as a function of time and column length for columns from 25-200 cm long. All column data fit an equation of the form S = ETF. S [distance of the wetting front from the soil surface at time T] was found to be significantly correlated with T (at the 1% level). The equation was normalized by dividing S and E [along with F, it is an empirical parameter that must be calculated for each soil] by the column length. When this was done, data for all columns fit a single normalized equation. Use of this equation allows estimation of the shortest possible time necessary for the front of a pulse of waste solution to reach a given depth in a homogeneous soil system.

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