Intraparticle diffusion of phenol in macroreticular adsorbents: Modelling and experimental study of batch and CSTR adsorbers

Intraparticle diffusivity of phenol in macroreticular adsorbents was studied by considering different models for particle structure: homogeneous, pore diffusion, “parallel” and series model. Numerical solution of model equations was achieved by using collocation methods. Models were tested by carrying out experiments in batch adsorbers. In the working range the pore diffusion model represents well our system. The value of effective diffusivity of phenol in Duolite ES861 (Dpe = 7.7 × 10−10 m2/s) were successfully used to predict the outlet concentration as a function of time in CSTR adsorbers.

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