How to Provide Nitrite Robustly for Anaerobic Ammonium Oxidation in Mainstream Nitrogen Removal

Wang, Kaichong; Li, Jia; Gu, Xin; Wang, Han; Li, Xiang; Peng, Yongzhen; Wang, Yayi

doi:10.1021/acs.est.3c05600

Cited by 10 publications

(1 citation statement)

References 236 publications

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“…Recent studies have reported that anammox can use other electron acceptors aside from NO 2 – , , such as organic acids (propionates) . Compared to traditional nitrification and denitrification, anammox better conserves carbon sources (100%), reduces waste sludge generation (80%), reduces oxygen demand (60%), and reduces greenhouse gas emissions . Anammox technology has been studied extensively over the past 40 years, at both laboratory and industrial scales.…”

Section: Types Of N Transformationsmentioning

confidence: 99%

Microalgae Shed Light on Interconnected Nitrogen Transformation in Microalgal-Bacterial Consortia

Li,

Zhang,

Bai

et al. 2024

ACS EST Water

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Nitrogen is a component of many fundamental biomolecules and also participates in environmental redox chemistry. Nitrogen pollution is a serious environmental problem. Biological nitrogen removal is one of the most significant issues in wastewater treatment. Microbial-driven nitrogen transformations are carried out through metabolic pathways. Wastewater treatment systems using microalgal-bacterial cocultures can improve nutrient removal efficiency through interspecies synergistic interactions. However, relevant studies on the nitrogen metabolism and microbial characteristics of microalgal-bacterial systems have not been systematically reviewed and discussed. This Review comprehensively analyzes nitrogen contaminants in various biological nitrogen removal microalgal-bacterial composite systems and summarizes the microbial characteristics and nitrogen-metabolizing enzymes present. Nitrogen metabolism regulation methods involving quorum sensing and genetic regulation are described, and methods of enhancing microbial nitrogen removal through microbial community interactions, enhancing enzyme activity, and promoting electron transfer are introduced in detail. This Review provides a perspective on the improvement and optimization of microalgalbacterial wastewater treatment technology through analyzing the nitrogen metabolism and increasing process performance.

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