Data underlying the publication: Oxygen-to-Ammonium-Nitrogen Ratio as an Indicator for Oxygen Supply Management in Microoxic Bioanodic Ammonium Oxidation

<strong></strong>In this study, we systematically investigated NH₄⁺ oxidation at the bioanode with different O₂ and NH₄⁺-Nratios (O₂/NH₄⁺-N) of 0.5, 1.0 and 1.5. Our specific focus was on achieving high NH₄⁺ oxidation while simultaneously maintaining the selectivity of NH₄⁺ oxidation to N₂. Additionally, the diversity of N-related functional bacteria was characterized to elucidate the underlying N conversion reactions in the MEC systems. This study elucidates the influence of microoxic levels of O2 on NH4+ oxidation at bioanodes and providing insights for process optimization.

本研究系统考察了氧（O₂）与氨氮（NH₄⁺-N）比值（即O₂/NH₄⁺-N）分别为0.5、1.0和1.5时，生物阳极（bioanode）上的铵根（NH₄⁺）氧化过程。本研究的核心关注点在于实现高效的铵根氧化，同时维持铵根氧化生成氮气（N₂）的反应选择性。此外，本研究还对氮相关功能菌群的多样性进行了表征，以阐明微生物电解池（Microbial Electrolysis Cell, MEC）系统中潜在的氮转化反应机制。本研究阐明了微氧水平的氧气对生物阳极上铵根氧化过程的影响，可为相关工艺优化提供理论参考。