Adsorption kinetics describe the time it takes for the adsorption system to reach equilibrium and the pathway to get there. The kinetics depend on the adsorbent's physical and chemical characteristics, which also influence the adsorption mechanism. Two models were evaluated for our systems, pseudo-first order (PFO) and pseudo-second order kinetics (PSO). In a system described by PFO, the adsorption process is dominated by physisorption and the rate-limiting step involves the diffusion of the adsorbate molecules, which is influenced by the adsorbate concentration. In a PSO adsorption system, the adsorption rate is proportional to the availability of adsorption sites on the adsorbent material and chemisorption is considered to be the rate-limiting step in which physicochemical interactions cause the removal of adsorbate molecules from the solution. In our adsorption system, both MB and SO removal could be described by PSO with correlations of 0.9998 and 0.9995, respectively (Figure , 4 and Table ).