Determination of Pore and Surface Diffusivities from Single Decay Curve in CSBR Based on Parallel Diffusion Model

A novel, simple numerical method to determine the pore and surface diffusivities in adsorbents from a single experimental concentration decay curve obtained using batch adsorption technique was investigated this study. The diffusion coefficients were determined based on conventional parallel model its dimensionless form theoretical correlation. assumed that film mass transfer resistance negligible, i.e., condition with large Biot number, curve. procedure for determining kinetic parameters investigated, effectiveness of proposed validated by comparing those reported previously. p-nitrophenol, system granular activated carbon as an adsorbent, used validation. corresponded fairly well