Adsorption on activated carbon of p-nitrophenol from aqueous solution
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.
- Publication:
-
Water Research
- Pub Date:
- 1989
- DOI:
- 10.1016/0043-1354(89)90066-3
- Bibcode:
- 1989WatRe..23...85W
- Keywords:
-
- adsorption;
- water purification;
- activated carbon;
- break-through curve;
- fixed-bed adsorption;
- concentration distribution;
- adsorption from solution;
- mass transfer coefficient