Abstract
A method of the fixed-bed adsorption on activated carbon has been used in the removal of p-nitrophenol from water. The range of low concentrations of a break-through curve has been analyzed. On the basis of a three-stage model of the process the equations describing the initial stage of the adsorption dynamics and concentration distribution in the bed at low concentrations of the break-through curve have been derived. The equations were used to determine the effective kinetic coefficient and to evaluate the effect of axial diffusion on the process kinetics. A method for determination of the time for protective action of the adsorbent layer has been proposed.
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