Abstract
In this study, the electrochemical oxidation of C. I. Reactive Orange 4 (RO4) on a silver-carbon composite (AgC-PVC) electrode was studied using the cyclic voltammetry, potential liner V, and electrolysis methods. The AgC-PVC electrode was used as the working electrode in the electrochemical measurement of RO4 in the presence of NaCl as a supporting electrolyte. The UV-Vis spectra of RO4 after the electrochemical oxidation showed the complete decolorization of the solution. The electrolysis products were characterized using FTIR and GC-MS. The results showed that in the presence of OCl- as an active oxidant, RO4 molecules are broken down into several lower-molecular-weight molecules by the electrochemical technique. The electrode used was also able to reduce the COD, BOD(5) and surfactant contents in the textile effluents using a pilot scale reactor. This proved that the prepared AgC-PVC electrode was beneficial for removing both the color and other pollutants from textile effluents.
Highlights
Dyes are a major problem in textile effluent management because dye colors are visible with the naked eye even in small quantities (
The Ag28.5C66.5-PVC5 electrode was selected for further study on the decolorization of the Reactive Orange 4 (RO4) solution
An AgC-polyvinyl chloride (PVC) electrode composed of 30% Ag and 70% C was found to be the best among the prepared electrode because it had the highest value of exchange current density, which is 3.555 mA cm–2
Summary
Dyes are a major problem in textile effluent management because dye colors are visible with the naked eye even in small quantities (
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