Abstract
The degradation of Acid Blue 111 anthraquinone dye has been studied by the simple electro-assisted Fenton process and the obtained results were compared to the Fenton process. Ferrous sulphate and hydrogen peroxide were used and in the electro-assisted Fenton process IrOx electrode was used as the anode. The influence of hydrogen peroxide and ferrous ion concentration, as well as pH on the processes was investigated. A second-order kinetic was established and rate constants were determined. The degradation was followed by ultraviolet-visible spectroscopy, gas and liquid chromatography-mass spectrometry analysis. Mineralization of Acid Blue 111 was confirmed by total organic carbon analysis and ion chromatography analysis. Efficiency and energy consumption of the processes were calculated. Also, phytotoxicity was studied using the Mung bean seeds. According to the obtained results, the simple electro-assisted Fenton process was much efficient in the degradation of Acid Blue 111 dye than the Fenton process.
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