Adsorption kinetics and isotherms: The results of batch experiments carried out to evaluate the uptake kinetics of Cd(II)
on MT-CD@SiO2 illustrate that the adsorption kinetics is a fast process, and over 90% of Cd(II) is absorbed within 20 min (Fig. 4B). The adsorption reaches equilibrium at 40 min. The data fit a pseudo-second order kinetic with r2 values of 0.9999, together with the best-fits rate constants of 2163 h1.