PARTLCLE SURFACE ROUGHNESS EFFECTS ON THE INTERFACIAL MASS TRANSFER DYNAMICS OF MICROPOROUS ADSORBENTS |
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| Authors: | Ben M. Van Vliet Walter J. Weber JR. |
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| Affiliation: | a National Institute for Water Research,Council for Scientific and Industrial Research, Pretoria, South Africab Environmental and Water Resources Engineering, The University of Michigan, Ann Arbor, Michigan |
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| Abstract: | The surface roughness characteristics of several microporous adsorbents are qualitatively explored by scanning electron microscopy. Interfacial (film) mass transfer coefficients for adsorption of a number of different solutes by these adsorbents are investigated. Significant differences between coefficients for different adsorbents are reported. Rough spheres are shown to exhibit a seven-fold mass transfer enhancement over smooth spheres. The results indicate that mass transfer enhancement is more dependent on surface roughness than on overall particle shape. The surface roughness is investigated quantitatively by fractal analysis in a companion paper (Van Vliet and Young, 1988). |
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| Keywords: | Adsorption Mass transfer Microporous adsorbents Particle topography Surface roughness |
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