Experimental evaluation of chemical transport in water-saturated porous media: 2. sorbing media
1974
Saxena, S. K. | LINDSTROM, F. T. | Boersma, L.
Dispersion profiles of 2,4-dichlorophenoxyacetic acid in sorbing porous media were measured experimentally to evaluate a theoretical dispersion model previously developed by the investigators. The chemical being dispersed along a column made up of glass beads was initially present only in the pore water of a 1 cm long section at the front of the column. After leaching for a period of time the column was sectioned and the concentration in each section was obtained and compared with a predicted concentration.Four porous media systems consisting of glass beads with particle diameters of <30, 28–53, 105–149, and 149–210 μm obtained by dry sieving were used. Corresponding predominant pore radii were 4.5, 8.2, 19.5, and 36.2 μm. Sorption sites were established on the glass beads by coating them with an ion exchange resin.Experimental results were in good agreement with theoretical predictions.
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