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

Figure 3

Removal of HA in aqueous solution under different conditions at pH 7 and 30 mg/L initial HA concentration (only HA solution (control), HA solution with UVC lamp (photolysis), HA solution with 20 g/L of TCNSP (adsorption), and HA solution with 20 g/L of TCNSP and UVC lamp (adsorption & photocatalysis)).