فهرست نشریات علمی دسترسی آزاد ایران

In this study, the isotherm, kinetic, and thermodynamic properties of diamine green B dye adsorption were investigated using enzymatic metal–organic frameworks. First- and second-order kinetic models, along with the Elovich kinetic model, as well as Langmuir and Freundlich isotherm models, were applied to evaluate the data. Based on previous studies, the dye adsorption efficiency of this material was assessed by examining the effects of contact time, adsorbent dosage, and initial dye concentration. The optimal adsorption conditions for this nano-adsorbent were determined to be a contact time of 45 min and an adsorbent dosage of 5 g/L. The calculated thermodynamic parameters (ΔG, ΔH, and ΔS) indicate that the adsorption of the dye onto the enzymatic organometallic adsorbent is spontaneous, endothermic, and associated with an increase in randomness. The process followed the Elovich kinetic model. Among the tested isotherm models, the Freundlich isotherm provided the best fit to the experimental data.