Electrochemical Oxidation of Anastrozole over a BDD Electrode: Role of Operating Parameters and Water Matrix

various operating parameters, such as current density (6.25 and 12.5 mA cm⁻²), pH (3–10), ANZ concentration (0.5–2 mg L⁻¹), nature of supporting electrolytes, water composition, and water matrix, have been evaluated. ANZ removal of 82.4% was achieved at 1 mg L⁻¹ initial concentration after 90 min of reaction at 6.25 mA cm⁻² and 0.1 M Na₂SO₄. The degradation follows pseudo-first-order kinetics with the apparent rate constant, k_app, equal to 0.022 min⁻¹. The k_app increases with increasing current density and decreasing solution pH. The addition of chloride in the range 0–250 mg L⁻¹ positively affects the removal of ANZ. However, chloride concentrations above 250 mg L⁻¹ have a detrimental effect. The presence of bicarbonate or organic matter has a slightly negative but not significant effect on the process. The EO of ANZ is compared to its degradation by solar photo-Fenton, and a preliminary economic analysis is also performed.