Figure 5

(a) Effect of contact time on the removal of Sb(III) by GAD. (b) Pseudo-first-order reaction model. (c) Pseudo-second-order reaction model. (d) Intraparticle diffusion model (pH = 6; dosage = 1600 mg/200 mL dry weight; Sb(III) concentration = 10, 20, 50 mg/L; temperature = 298 k; rotation speed = 150 rad/min; contact time = 720 min).