Electrochemical Degradation of Lincomycin in Prepared and Environmental Aqueous Matrices

• Published in: International journal of electrochemical science Vol. 12; no. 12; pp. 12112 - 12124
• Main Authors: Chen, Te-San, Jheng, Jhao-Jia, Huang, Kuo-Lin, Cheng, Hei Man
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.12.2017
• Subjects: boron-doped diamond electrode; electro-degradation; lincomycin; pharmaceuticals and personal care products (PPCPs); boron-doped diamond electrode; pharmaceuticals and personal care products (PPCPs); electro-degradation; lincomycin
• ISSN: 1452-3981; 1452-3981
• DOI: 10.20964/2017.12.700

This study focuses on the performance of lincomycin (LC) electro-degradation in terms of LC degradation and total organic carbon (TOC) removal efficiencies. The LC degradation and TOC removal under several parameters, such as electrolytic cell (undivided vs. divided), current density, anode material (BDD, PbO2, and Pt), and real environmental water matrix (municipal wastewater treatment plant secondary effluent (MWTPSE), groundwater (GW), and river water (RW)) were investigated and discussed. The results show that the electrochemical degradation of LC followed pseudo-first-order kinetics and the LC degradation efficiency and TOC removal increased with the increase in current density. The performance of LC degradation and TOC removal on the tested electrodes was in the order BDD > PbO2 > Pt. The faster LC degradation occurred in the undivided cell, but the TOC removal was better in the divided cell. At 0.5 A/cm2 and 25°C in 1 M Na2SO4, the apparent rate constants of LC degradation were 5.23×10-3 and 2.33×10-3 s-1 in the undivided and divided cells, respectively. Using this electrochemical oxidation process could completely mineralize the LC and TOC in the three different environmental matrices with the order GW > RW > MWTPSE.