Degradation of tetracycline in aqueous medium by electrochemical method

Abstract

The degradation of tetracycline by anode oxidation with Ti/RuO 2 -IrO 2 electrode was carried out in an electrochemical cell. The effect of operating conditions such as electrical current density, initial pH, antibiotic concentration, electrolyte concentration and hydroxyl radical scavenger on the oxidation of tetracycline was investigated. The results showed that the degradation of tetracycline followed apparent pseudo-first-order kinetics. The rate constant increased linearly with the current density, but the oxidation curves displayed the same dependence on the amount of the specific charge passed. The degradation rate decreased with the initial antibiotic concentration. Either initial pH or electrolyte concentration had little effect on the electrochemical oxidation of tetracycline. The presence of tertbutanol did not hinder the degradation rate, indicating the radical contribution to the oxidation of tetracycline could be neglected. 

Electrochemical degradation of tetracycline in artificial urine medium

“…In two separate studies, Wu et al [22] and Zhang et al [23] studied the electrochemical degradation of TeC using a Ti/RuO 2 -IrO 2 anode in an aqueous solutions containing Na 2 SO 4 as the supporting electrolyte. The authors concluded that TeC can be efficiently removed by the electrooxidation process.…”

Degradation and Detoxicity of Tetracycline by an Enhanced Sonolysis

“…Hence, many researchers tried to use chemical processes such as the photo-Fenton (Bautitz and Nogueira, 2007), electrochemical process (Zhang et al, 2009), ultrasound/goethite/O 3 (Wang et al, 2011) and ultrasound/Fe 3 O 4 /Na 2 S 2 O 8 (Hou et al, 2012) to degrade the tetracycline. Based on the results shown in above studies, the strength of introduced energy by ultraviolet (UV) light or ultrasound, additions of H 2 O 2 or iron-salts and pH affect the efficiency of tetracycline degradation.…”

Electrochemical Degradation of Pharmaceutical Compounds as Tetracycline in Aqueous Solution with BDD Electrode

“…With a growth of population, intensive agriculture and industrialization, a very important role today is played by clean water recovery processes from wastewater for reuse by elimination of antibiotics from terrestrial and aqueous resources. Several studies on degradation of tetracycline, using different technologies were conducted: using activated sludge processes [9], TiO 2 nanopore arrays electrode [10], TiO 2 and ZnO aqueous suspensions were also used in the photocatalytic oxidation of tetracycline, under simulated solar light [11], photocatalysis of TC with C-N-S tridoped TiO 2 material [12], electron pulse radiolysis [14][15][16][17], using Pt plates as anode [14], with Ti/RuO 2 anode [15]. In this study, the electrochemical reactions followed pseudo-first order kinetics.…”