Reversing Effect of Hydrostatic Pressure on Liquid-Phase Adsorption
A simple experimental procedure for the detection of hydrostatic pressure effect onto liquid-phase adsorption was developed and applied to some adsorption systems of aromatic compounds from aqueous solution onto an activated carbon fiber adsorbent. This experiment needs only a few hundred of atmospheric pressure. The technique we developed clearly showed the definite existence of the pressure effect in such simple adsorption systems as aromatic compounds from aqueous solution onto a carbon adsorbent. Further, the reversal of pressure effect against the equilibrium concentration was found. This led to a varying molar volume of adsorbate against amount adsorbed. The result could be interpreted with compressive effect by the potential of pore walls.
KeywordsMolar Volume Aromatic Compound Pressure Effect Pore Wall Adsorbed Molecule
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