where C0 and Ce are the initial concentration and the concentration at equilibrium of Pb (II), in
mg/L, respectively, m is the mass of the adsorbent and V is the volume of the solution.
Adsorption kinetics were used to explain the adsorption mechanism as well as the adsorption
characteristics of the Co/Mo-LDH. The pseudo-first and second-order kinetics equations
[30,31] were given as: