TY - JOUR AU - Loan Ngoc AU - Hoan Duong AU - Ha Bui PY - 2021/08/18 Y2 - 2024/03/29 TI - Optimizing Electro-Fenton process for removal of atrazine from aqueous solutions using Taguchi method JF - Science & Technology Development Journal: Science of the Earth & Environment JA - STDJSEE VL - 5 IS - 2 SE - Original Research DO - https://doi.org/10.32508/stdjsee.v5i2.565 UR - http://stdjsee.scienceandtechnology.com.vn/index.php/stdjsee/article/view/565 AB - The purpose of this study is centered on the removal of atrazine, one of the popular organochlorines in Vietnam, from an aqueous solution, using an electro Fenton process with iron and carbon plated steel electrodes at a batch electro reactor. This study had applied the Taguchi method, one of the most uncomplicated cases of design of experiments involving the minimum number of experiments to be performed within the permissible limit of factors and levels through the Signal to Noise ratio. This study design was conducted with five independent factors: initial pH, current density, Fe2+ concentration, sodium sulfate and reaction time, at a fixed atrazine concentration of 10 mg/L to find the best condition to eliminate atrazine from the solution. The Signal to Noise ratio results illustrates that the initial pH is the most important factor, followed by the reaction time and Fe2+ concentration, while sodium sulfate and current density seem neglectable to the removal of atrazine using electro Fenton process. The optimal Taguchi condition shows that the electro Fenton process reached the best efficiency, approximately 76% atrazine eliminated after 180 min of reaction time at initial pH 3.5, sodium sulfate of 990 mg/L, Fe2+ concentration of 2 mM and current density of 2.22 mA/cm2. Three confirm experiments at optimal test conditions also indicated good agreement with predicted results with small error variation (1.21 - 3.54%). Thus, the relationship between the removal efficiency and operating parameters could be understood. These obtained results highlight the potential of using the electro Fenton process to eradicate or reduce pesticide contaminants. Electron beam also could be one of the pre-treatment techniques to eliminate persistent organic pollutants before biological treatment systems. ER -