Electrodegradation of Acid Mixture Dye through the Employment of Cu/Fe Macro-Corrosion Galvanic Cell in Na2SO4 Synthetic Wastewater

Abstract

Traditional wastewater purification processes are based on a combination of physical, chemical, and biological methods; however, typical electrochemical techniques for removing pollutants require large amounts of electrical energy. In this study, we report on a process of wastewater purification, through continuous anodic dissolution of iron anode for aerated Cu/Fe galvanic cell in synthetic Na2SO4 wastewater solution. Electrochemical experiments were conducted by means of a laboratory size electrolyzer, where electrocoagulation along with electrooxidation phenomena were examined for wastewater containing Acid Mixture dye. The above was visualized through the employment of electrochemical (cyclic voltammetry and ac impedance spectroscopy techniques) along with instrumental spectroscopy analyses.

Anode Modification with Fe2O3 Affects the Anode Microbiome and Improves Energy Generation in Microbial Fuel Cells Powered by Wastewater

“…Furthermore, the CV profiles of the electrodes with 0.4 and 0.2 g of Fe2O3 exhibited two broad reversible features centered at -0.32 and 0.38 V vs. SCE. Therefore, those anodic peaks are most likely related to the process of iron oxidizing to Fe(II) and (III), while the cathodic peaks are associated with the reduction of those oxidized species [43]. Therefore, the changes observed after biofilm formation are most likely due to the following The electrochemical behavior of the control and Fe-modified electrodes with and without biofilm was tested by cyclic voltammetry in a working solution.…”