Abstract
The adsorption of naphthalene and pyrene on two different types of commercial activated carbons was stud- ied by batch and column experiments. Adsorption equilib- rium was measured at three different temperatures. Heats of adsorption were estimated from the equilibrium results and compared to other previous reports. From the column experiments, using parameters obtained from the batch ex- periments and literature correlations, effective surface diffu- sivities were estimated for naphthalene and pyrene on both adsorbents in different feed concentrations. The corrected diffusivities, using Darken equation, appear to be almost constant for naphthalene (ca. 1.3 · 10 −8 cm 2 /min), and for pyrene (ca. 2.3 · 10 −10 cm 2 /min), in both activated carbons.
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