This study aims to investigate the removal efficiency of insecticide imidacloprid (IMD) from its commercial formulation using electro-Fenton (EF) and photo electro-Fenton (PEF) processes in an open undivided electrolytic cell (BDD/Carbon felt). Ferrous (Fe²⁺) was used as catalyst in sulfate medium (Na₂SO₄) for both processes and a UV-C lamp (7 W) was used in PEF as source of UV irradiation. The effect of various operating conditions on IMD and COD removal was studied based on the response surface methodology (RSM-CCD). Optimal conditions for achieving maximum removal of IMD and COD by EF have been determined as follows: 17.15 mA cm⁻² of current density, 0.255 mM of [Fe²⁺], and an electrolysis time of 80 min and 120 min for IMD and COD removals, respectively. The PEF process has been identified as a more efficient process compared to EF. It achieved 98 % of IMD removal after 75 min and 97 % of COD removal after 4 h of electrolysis time, with a Mineralization Current Efficiency (MCE%) value of 28.87 % and an Energy Consumption (EC) value of 7.9 kWh kg⁻¹ COD removed in 3 h. Furthermore, quenching experiments using methanol, 2-propanol, and tert‑butanol as scavengers indicated that the primary oxidizing agent responsible for IMD degradation is •OH/BDD(•OH).

本研究旨在研究在开放式未分隔电解池（BDD/碳毡）中使用电芬顿 (EF) 和光电芬顿 (PEF) 工艺从商业制剂中去除杀虫剂吡虫啉 (IMD) 的效率。对于这两个过程，亚铁 (Fe ^{2+ ) 在硫酸盐介质 (Na} ₂ SO ₄ )中用作催化剂，并且在 PEF 中使用 UV-C 灯 (7 W) 作为 UV 照射源。基于响应面法 (RSM-CCD) 研究了各种操作条件对 IMD 和 COD 去除的影响。EF实现最大程度去除IMD和COD的最佳条件已确定如下：电流密度17.15 mA cm ^{-2 、[Fe 2+} ]0.255 mM、IMD和COD电解时间分别为80分钟和120分钟。分别进行清除。与 EF 相比，PEF 工艺已被认为是一种更高效的工艺。75 分钟后，IMD 去除率达到 98%，电解时间 4 小时后，COD 去除率达到 97%，矿化电流效率 (MCE%) 值为 28.87%，能耗 (EC) 值为 7.9 kWh kg ⁻¹ 3小时内去除COD。此外，使用甲醇、2-丙醇和叔丁醇作为清除剂的淬灭实验表明，导致IMD降解的主要氧化剂是•OH/BDD(•OH)。