Abstract
Many researchers have stated that the character of adsorbent bed breakthrough curves is dominated by external film diffusion at low solute concentrations and by particle diffusion at high solute concentrations. Analyses in this paper elucidate what occurs in adsorbent beds at high and low solute concentrations, as well as why external film mass transfer coefficient controls at low concentrations and why intraparticle solute diffusivity controls at high concentrations.
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