Abstract

CORIA, Gabriela; NAVA, José L.  and  CARRENO, Gilberto. Electrooxidation of Diclofenac in Synthetic Pharmaceutical Wastewater Using an Electrochemical Reactor Equipped with a Boron Doped Diamond Electrode. J. Mex. Chem. Soc [online]. 2014, vol.58, n.3, pp.303-308. ISSN 1870-249X.

This paper deals with the degradation of diclofenac by electrochemical oxidation in NaClO₄ medium at neutral pH using a FM01-LC reactor equipped with a boron doped diamond electrode (BDD). Microelectrolysis studies were carried out to find the current density domain where hydroxyl radical (^•OH) formation is favored, 10 ≤ j ≤ 20 mA cm⁻². Electrolysis experiments at mean linear flow velocities of 14.6 ≤ u ≤ 58.4 cm s⁻¹ were performed. The experimental set-up achieved 100% diclofenac mineralization with 78% current efficiency and energy consumption of 2.54 kWh m⁻³ at j = 15 mA cm⁻² and u=29.2 cm s⁻¹.

Keywords : Degradation of diclofenac; boron doped diamond electrode; water treatment; electrooxidation; FM01-LC reactor.