Figure 8

(a) Breakthrough curves for raw sand (blank control), bed depth, 20 cm; Sb(III), 10 mg/L, flow rate 8 mL/min. (b) Breakthrough curves for GAD with different hydraulic loading rates, 20 cm, 10 mg/L. (c) Breakthrough curves for GAD with different bed depths, 2 mL/min, 10 mg/L. (d) Breakthrough curves for GAD with different feed concentrations, 2 mL/min, 30 cm.