Integrated Electrocoagulation Strategies for Wastewater Treatment and Renewable Hydrogen Production

Abstract Electrocoagulation (EC) has emerged as an effective treatment technology capable of simultaneously removing pollutants and generating hydrogen as a valuable co‐product. This review examines recent progress in EC fundamentals, electrode dissolution behavior, and key operational factors influencing contaminant removal and gas generation. Analysis of over 120 studies shows that EC achieves 75–98% chemical oxygen demand (COD) reduction, 80–99% turbidity removal, Faradaic efficiencies of 60–95%, and hydrogen yields of 80–300 L H 2 m −3 , with energy consumption ranging from 25 to 120 kWh kg −1 H 2 . Despite these promising results, scalability remains hindered by electrode passivation, energy intensity,…