A Brief Review on Environmental Application of Boron Doped Diamond Electrodes as a New Way for Electrochemical Incineration of Synthetic Dyes

Figure 5

Influence of the applied current on the evolution of the COD and current efficiency (inset) as a function of time during the electrolysis of methyl red on the (a) PbO₂ and (b) BDD anodes, respectively. Flow rate = 180 dm³ h⁻¹; pH = 3; applied current = (⚪) 0.5, (◊) 1, (∆) 1.5, (□) 2 A [23].

(a)

(b)