This study evaluated the efficacy of electrocoagulation methods for the removal of microplastics using both synthetic solutions and wastewater samples. The experiments were performed with commercial polyester microplastic in batch reactors. Current density (1.92–8.07 mA/cm²), pH (2–7), microplastic size range (25–1500 μm), and electrolysis time (0–90 min) were the variables used to assess the process. When using synthetic solutions with pH values of 4 and 7 and current densities of 2.88 and 8.07 mA/cm², the microplastic removal efficiency was at least 99% in all cases. Measurement of Particle Image velocity (PIV) and analysis of Scanning Electron Cryomicroscopy (Cryo-SEM) were used as monitoring tools for tracking the activity of the hydrogen gas bubbles. The lowest estimated operational costs were obtained by using a current density of 2.88 mA/cm² and an initial pH of 4. Using real wastewater samples, the removal efficiency of microplastics was 96.5%. In addition, 92.2% of COD and 88.8% of thermotolerant coliform colonies were removed. The results of the study showed that electrocoagulation effectively can remove microplastics from wastewater streams at low operational costs while simultaneously reducing both COD and thermotolerant coliforms.

本研究评估了电凝方法使用合成溶液和废水样品去除微塑料的功效。实验是在间歇式反应器中用商用聚酯微塑料进行的。电流密度 (1.92–8.07 mA/cm ² )、pH (2–7)、微塑料尺寸范围 (25–1500 μm) 和电解时间 (0–90 分钟) 是用于评估该过程的变量。当使用 pH 值为 4 和 7 且电流密度为 2.88 和 8.07 mA/cm ^{2 的}合成溶液时，在所有情况下微塑料去除效率至少为 99%。粒子图像速度 (PIV) 的测量和扫描电子低温显微镜 (Cryo-SEM) 的分析被用作跟踪氢气气泡活动的监测工具。通过使用 2.88 mA/cm ²的电流密度和 4 的初始 pH 值获得最低的估计运营成本。使用实际废水样本，微塑料的去除效率为 96.5%。此外，去除了 92.2% 的 COD 和 88.8% 的耐热大肠菌群。研究结果表明，电凝可以以较低的运营成本有效去除废水流中的微塑料，同时减少 COD 和耐热大肠菌群。