Synergistic Removal of Humic Acid in Water by Coupling Adsorption and Photocatalytic Degradation Using TiO₂/Coconut Shell Powder Composite

Figure 9

Reuse test for removal of HA with TCNSP and NZLC (initial concentration of HA = 30 mg/L, loading amount of catalyst = 20 g/L, light source = 8.4 mW/cm² of UVC, and pH = 7).