Electrochemical Degradation of Industrial Dyes in Wastewater through the Dissolution of Aluminum Sacrificial Anode of Cu/Al Macro-Corrosion Galvanic Cell

oleh: Mateusz Łuba, Tomasz Mikołajczyk, Bogusław Pierożyński, Lech Smoczyński, Paweł Wojtacha, Mateusz Kuczyński

Format: Article
Diterbitkan: MDPI AG 2020-09-01

Deskripsi

This paper reports on the process of industrial-type wastewater purification carried-out through continuous anodic dissolution of aluminum alloy sacrificial anode for artificially aerated Cu-Al alloy galvanic (macro-corrosion) cells and synthetically prepared wastewater solutions. Electrochemical experiments were performed by means of a laboratory size electrolyzer unit, where the electrocoagulation process along with surface-induced electrooxidation phenomena were examined for wastewater containing Acid Mixture and <i>Disperse Red 167</i> dyes. Final reduction of the dyes concentrations came to 32 and 99% for Acid Mixture and <i>Disperse Red 167</i>, correspondingly. The above was visualized through the employment of electrochemical (cyclic voltammetry and a.c. impedance spectroscopy techniques) and instrumental spectroscopy analyses.