Application of Bioelectrochemical System and Magnetite Nanoparticles on the Anaerobic Digestion of Sewage Sludge: Effect of Electrode Configuration

Conventional anaerobic digestion is currently challenged by limited degradability and low methane production. Herein, it proposed that magnetic nanoparticles (Fe3O4-NPs) bioelectrochemical systems can be employed for the improvement of organic content degradation. In this study, effect electrode configuration was examined through application a system Fe3O4-NPs in (AD). A microbial electrolysis cell with cylindrical electrodes (MECC) (MEC) rectangular were compared against traditional AD process. Biochemical potential (BMP) tests carried out using digesters working volume 800 mL charged 300 inoculum, 500 substrate, 1 g Fe3O4-NPs. The (zinc copper) both inserted inside BMPs powered 0.4 V 30 days at 40 °C. MECC performed better, improving degradability, enhanced percentage (by 49% > 39.1% control), reduced water pollutants (chemical-oxygen demand, total carbon, suspended solids, turbidity, color) more than 88.6%. maximum current density 33.3 mA/m2, coulombic efficiency 54.4%. showed remarkable to maximize enhancement pollution removal adjusting configuration.