“…The aim of this work was to study the mechanisms of such adsorption processes. Although several rigid models such as the homogeneous surface diffusion model, the pore diffusion model, and the heterogeneous diffusion model (also known as the pore and diffusion model) have been widely applied in batch reactors to describe the transport of molecules inside the adsorbent particles (6)(7)(8)(9), the mathematical complexity of these models makes them rather inconvenient for practical use (10,11). The concentration-time profiles of batch adsorption of two commercial dyes and two phenols from water on activated carbons prepared from plum kernels at different conditions were measured.…”