How can one calculate porosity and the diffusivity of the biosorbent column?

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Shamshad Ahmad

use the darcy law equation for porosity of the soil

Brett Turner

Hi, use a non reactive tracer (Cl or Br) and measure its concentration with time to obtain a breakthrough curve. The program CXTFIT can then be used to solve the Advection-Dispersion eqn. You will get porosity and dispersion coefficient which you can obtain the dispersivity.