Tham khảo tài liệu 'heat and mass transfer modeling and simulation part 2', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Modeling of Batch and Continuous Adsorption Systems by Kinetic Mechanisms 11 From the experiments it can be observed that there is an increase in the solute concentration in the desorption procedure or wash which corresponds to a volume higher than 45 ml. The wash procedure leads the solute concentration to a value that is higher than the initial concentration CA0 UA mL UA- enzymatic activity unit . From the simulations Fig. 11a it can be seen that an increase in the solute concentration can be reached by the increase in the kinetic parameter of desorption in the step of desorption. This fact is coherent once in the wash procedure the solvent is utilized to promote the desorption of the molecules adsorbed in the solid surface. 3. Irreversible kinetic model with batch adsorption The agitated batch process of adsorption is an important method used for equilibrium parameters estimation which are applied in the processes modeling such as chromatography and simulated moving bed SMB separation. The hydrodynamic aspects of these processes become the kinetic modeling an interesting tool for the process modeling in obtaining parameters that will be incorporated in the equipment design. Some contributions in the application of adsorption kinetic models for the liquid phase can be encountered through the following publications Thomas 1944 Chase 1984 Sarkar and Chattoraj 1993 Hamadi et al. 2001 2004 Otero et al. 2004 Gulen et al. 2005 and Aroguz 2006 . An important contribution comes from the work of Chase 1984 which implemented semi-analytical expressions to model the adsorption phenomenon in agitated tanks and chromatographic columns. He considered the kinetic concepts to model the adsorption process as a reversible system with an overall rate of second-order. In a general point of view the above publications with exception of the Chase model Chase 1984 use simplified or empiric expressions for the kinetic models. The advantage of utilizing the concepts of kinetic .
