2026-06-03T23:14:48Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/117742026-06-02T06:38:57Zcom_10259_6168com_10259_5086com_10259_2604col_10259_6169

00925njm 22002777a 4500 dc Sharma, Aparna author Gurung, Anup author Mehdi, Syed Ejaz Hussain author Shahzad, Suleman author Hussain, Fida author Kang, Woochang author Pandey, Sandesh author Khan, Aqib Hassan Ali author Oh, Sang-Eun author 2025-03 Waste streams, leachates, and wastewater often contain high-strength ammonia, which can be challenging to manage. Microbial fuel cells (MFCs) offer a promising solution for treating such a nuisance of high-strength ammonia. However, optimizing MFC operating conditions, at lower technology readiness levels, is crucial to achieve a sustainable and economically viable application. This study investigates the factors affecting ammonia nitrogen removal in MFCs. MFCs with a cation exchange membrane (CEM) exhibit a higher diffusion rate of ammonium ions from the anode to the cathode compared to those with a proton exchange membrane (PEM). In close circuit mode (CCM), MFCs with a Pt-coated cathode electrode achieved an ammonium removal efficiency of 96% in the cathode chamber. Moreover, a plain carbon cathode electrode yielded an 87.1% removal efficiency. These results indicate that the combination of a catalyst (Pt) and oxygen in the cathode chamber can effectively remove or recover ammonia nitrogen from wastewater. Simultaneously, the removal of ammonia nitrogen in a microbial electrolysis cell (MEC) was studied. At an applied potential of 1.0 V, an ammonium removal efficiency of 87.5% was achieved. It was concluded that ammonium losses in MFCs can occur through electron migration, volatilization, and biological processes such as nitrification and denitrification https://hdl.handle.net/10259/11774 10.3390/su17062543 2071-1050 Ammonium Diffusion Microbial fuel cells Microbial electrolysis cells Nitrogen removal Power generation Wastewater Optimizing Physical Factors for the Ammonium Removal from Wastewater Using Bio-Electrochemical Systems