Removal of Polyvinyl Alcohol in Aqueous Solutions Using an Innovative Paired Photoelectrochemical Oxidative System in a Divided Electrochemical Cell

Figure 4

Effect of HNO₃ concentration: (a) removal efficiency and SEC of PVA and (b) Ce(IV) yield with different HNO₃ concentration in the anodic compartment (current density = 3 mA cm⁻², temperature = 323 K, anodic compartment: PVA = 50 mg L⁻¹, Ce(III) = 0.01 M; cathodic compartment: PVA = 50 mg L⁻¹, Na₂SO₄ = 0.05 M, pH = 3, oxygen flow rate = 500 cm³ min⁻¹, and UV-light intensity = 0.4 mW cm⁻²).

(a)

(b)