The Performance of the “Extended” Linear Driving Force Model to Simulate Adsorptive Processes using “Large-Pore” Materials

The intraparticle diffusion/convection model is applied to simulate adsorptive processes using “large-pore” adsorbent particles. In this work, we give a relation for the equivalence of this difficult and computation time consuming model to simpler models: the “apparent” diffusion model and an “extended” linear driving force (LDP) model. It is shown that the “extended” LDF model predicts reasonably well adsorption breakthrough curves in fixed-beds, for different equilibrium isotherms, using a λ (intraparticle Peclet number) — dependent “augmented” overall mass transfer coefficient between bulk fluid and particles.