Authors:
Ihos, Monica; Iancu, Vasile; Petre, Jana
Ihos, Monica; Iancu, Vasile; Petre, Jana
Conference: International Symposium “The Environment and the Industry”
Date: October 29-30, 2013
Location: Bucharest, Romania
Published: 2013
Volume: I
Keywords:
Electrochemical oxidation
Dimensionally stable anodes
Diclofenac
Electrochemical oxidation
Dimensionally stable anodes
Diclofenac
Abstract:
The aim of this paper was to apply the electrochemical oxidation on Dimensionally Stable Anodes (DSA) to remove pharmaceuticals at low concentrations from wastewaters. Two anodic compositions were used: Ti/RuO2-TiO2 and Ti/RuO2/SnO2-Sb2O5-RuO2 and diclofenac (DCF), a nonsteroidal anti-inflammatory drug, which is recalcitrant to biological degradation, was chosen as a model of pharmaceuticals. The experiments were carried out by using simulated solutions of DCF of 1 mg/L in 0.1 M Na2SO4 as supporting electrolyte and spiked effluent of a wastewater treatment plant (DCF-EWWTP). The applied current densities were 100, 200 and 300 A/m2 and pH of 5.8 and 11. The process was followed by recording the UV spectra and assessing the DCF concentration in the electrolysed solutions by high-performance liquid chromatography (HPLC) with ultraviolet-visible (UV-VIS) detection. The best results were obtained by using Ti/RuO2/SnO2-Sb2O5-RuO2.
The aim of this paper was to apply the electrochemical oxidation on Dimensionally Stable Anodes (DSA) to remove pharmaceuticals at low concentrations from wastewaters. Two anodic compositions were used: Ti/RuO2-TiO2 and Ti/RuO2/SnO2-Sb2O5-RuO2 and diclofenac (DCF), a nonsteroidal anti-inflammatory drug, which is recalcitrant to biological degradation, was chosen as a model of pharmaceuticals. The experiments were carried out by using simulated solutions of DCF of 1 mg/L in 0.1 M Na2SO4 as supporting electrolyte and spiked effluent of a wastewater treatment plant (DCF-EWWTP). The applied current densities were 100, 200 and 300 A/m2 and pH of 5.8 and 11. The process was followed by recording the UV spectra and assessing the DCF concentration in the electrolysed solutions by high-performance liquid chromatography (HPLC) with ultraviolet-visible (UV-VIS) detection. The best results were obtained by using Ti/RuO2/SnO2-Sb2O5-RuO2.