Figure 11

The pseudo-first-order (a) and pseudo-second-order (b) kinetic models for Cd²⁺ adsorption on MRM and RM; The external diffusion model of Cd²⁺ adsorption on MRM (c) and RM (d); The intra-particle diffusion model (e) of Cd²⁺ adsorption on MRM (e) and RM (f).