Ammonia Removal by Simultaneous Nitrification and Denitrification in a Single Dual-Chamber Microbial Electrolysis Cell

Ammonia removal from wastewater was successfully achieved by simultaneous nitrification and denitrification (SND) in a double-chamber microbial electrolysis cell (MEC). The MEC operations at different applied voltages (0.7 to 1.5 V) initial ammonia concentrations (30 150 mg/L) were conducted order evaluate their effects on performance batch mode. maximum efficiency of 96.8% obtained the anode V, followed 94.11% 1.0 V 87.05% 0.7. At concentration considerably affected rate, highest rate constant 0.1601/h determined first-order linear regression 30 mg/L ammonium nitrogen. overall total nitrogen noted be 85% via SND operated an 50 voltage V. operation continuous mode could remove (50 series cathode chambers 170 g-N/m3.d HRT 15. This study suggests that standalone dual-chamber can efficiently process without needing additional organic substrate aeration, which makes this system viable for field applications.