Electrocoagulation treatment of synthetic wastewater containing methyl orange and rhodamine b dye using stainless steel electrode: a comparative study

The electrocoagulation treatment is a promising technique to treat or remove pollutants from water or wastewater. It is a method of water treatment that combines coagulation and electrochemistry principles. In this research, synthetic wastewater containing Methyl orange and Rhodamine b dye were subjected to treatment using the electrocoagulation technique utilizing stainless steel electrodes. The experiments were carried out using electrochemical cells equipped with monopolar stainless-steel electrodes connected in parallel. The study examined the comparative of electrocoagulation treatment efficiency of synthetic wastewater containing Methyl orange and Rhodamine B dye using stainless steel electrodes. The result revealed correlation between the types of dyes and initial dye concentration due to synthetic wastewater's treatment efficiency. The highest treatment efficiency percentage was observed at initial concentration 500ppm for Rhodamine B dye, while the treatment efficiency percentage for Methyl orange is lower. The statistical data based on experimental results were analyzed using statistical analysis from General Full Factorial Design (GFFD). The quadratic model is deemed appropriate owing to its substantial 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, suggesting the model's significance. The experimental results indicate that the utilization of electrocoagulation as a treatment method for synthetic wastewater containing Methyl orange and Rhodamine B dye has demonstrated superior efficacy compared to the adsorption technique.