School of Environmental Science and Engineering, Guangzhou University, 510006, Guangzhou, China; Guangzhou University-Linköping University Research Center on Urban Sustainable Development, Guangzhou University, 510006, Guangzhou, China.
School of Environmental Science and Engineering, Guangzhou University, 510006, Guangzhou, China; Guangzhou University-Linköping University Research Center on Urban Sustainable Development, Guangzhou University, 510006, Guangzhou, China.
Environ Res. 2024 Jul 1;252(Pt 3):118984. doi: 10.1016/j.envres.2024.118984. Epub 2024 Apr 24.
Anaerobic ammonium oxidation has been considered as an environmental-friendly and energy-efficient biological nitrogen removal (BNR) technology. Recently, new reaction pathway for ammonium oxidation under anaerobic condition had been discovered. In addition to nitrite, iron trivalent, sulfate, manganese and electrons from electrode might be potential electron acceptors for ammonium oxidation, which can be coupled to traditional BNR process for wastewater treatment. In this paper, the pathway and mechanism for ammonium oxidation with various electron acceptors under anaerobic condition is studied comprehensively, and the research progress of potentially functional microbes is summarized. The potential application of various electron acceptors for ammonium oxidation in wastewater is addressed, and the NO emission during nitrogen removal is also discussed, which was important greenhouse gas for global climate change. The problems remained unclear for ammonium oxidation by multi-electron acceptors and potential interactions are also discussed in this review.
厌氧氨氧化被认为是一种环境友好且节能的生物脱氮（BNR）技术。最近，人们发现了在厌氧条件下进行氨氧化的新反应途径。除亚硝酸盐外，三价铁、硫酸盐、锰和电极中的电子也可能是氨氧化的潜在电子受体，它们可以与传统的废水处理 BNR 工艺相耦合。本文全面研究了各种电子受体在厌氧条件下氨氧化的途径和机制，并总结了潜在功能微生物的研究进展。讨论了各种电子受体在废水处理中用于氨氧化的潜在应用，以及在脱氮过程中产生的氮氧化物（NO），它是全球气候变化的重要温室气体。本文还讨论了多电子受体氨氧化存在的问题和潜在的相互作用。
