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The transient adsorption of catechol from aqueous solution (C0=5kg/m 3 ) on activated carbon in an upflow fixed-bed column at 293K was studied. The critical time at which the early breakthrough of the maximum admissible concentration (Ccrit=0.3×10−3kg/m 3 ) occurs is deduced from a Homogeneous Surface Diffusion Model (HSDM) that accounts for adsorption equilibrium and mass-transfer...
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