Electrocoagulation treatment of synthetic wastewater containing methyl orange dye and rhodamine blue dye using aluminium electrode: a comparative study

Electrocoagulation is a potential method for treating and eliminating contaminants from water or wastewater. It is a water treatment technique that integrates the concepts of coagulation with electrochemistry. The electrocoagulation approach was used to treat synthetic wastewater containing Methyl orange and Rhodamine b dyes, using aluminum electrodes. The studies were conducted using electrochemical cells that were outfitted with monopolar aluminum electrodes that were linked in parallel. The research investigated the efficacy of electrocoagulation treatment in removing Methyl orange and Rhodamine B dyes from synthetic wastewater. Aluminum electrodes were used for this purpose. The findings demonstrated a link between the type of dyes and the initial dye concentration, which directly impacted the effectiveness of treating synthetic wastewater. The Rhodamine B dye had the greatest treatment effectiveness % at an initial concentration of 500ppm, but the treatment efficiency percentage for Methyl orange was comparatively lower. The statistical data derived from experimental outcomes was analysed using statistical analysis using General Full Factorial Design (GFFD). The quadratic model is considered suitable due to its high coefficient of determination (R2 = 0.910) and statistically significant p value (≤ 0.003) for Methyl orange, and (R2 = 0.842) and statistically significant p value (≤ 0.000) for Rhodamine B dye, indicating the model's importance. The experimental findings suggest that electrocoagulation is a more effective treatment approach for synthetic wastewater containing Methyl orange and Rhodamine B dye compared to the adsorption methodology.