Microbial driving mechanism for simultaneous removal of nitrogen and phosphorus in a pure anammox reactor under ferrous ion exposure

Zhang, Li; Lan, Shuang; Hao, Shiwei; Dong, Tingjun; Peng, Yongzhen; Yang, Jiachun

doi:10.1016/j.biortech.2022.127844

Cited by 18 publications

(1 citation statement)

References 43 publications

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“…Some studies reported that ANAM-MOX bacteria could utilize NH4 + released from EPS biodegradation as a substrate for growth [70]. The nucleic acids (DNA and RNA) in EPSs may also serve as a potential phosphorus source for ANAMMOX bacteria, which have a high demand for phosphorus to synthesize the ladderane lipids in their cell membranes [71]. The recycling of EPS-bound nutrients within ANAMMOX aggregates can enhance the self-sufficiency and stability of the ANAMMOX process under nutrient-deficient conditions.…”

Section: Extracellular Polymeric Substances Enhance Anammox Activity ...mentioning

confidence: 99%

Harnessing the Potential of Extracellular Polymeric Substances in Enhancing ANAMMOX Processes: Mechanisms, Strategies, and Perspectives

Fan,

Jiang,

Wang

et al. 2024

Water

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Anaerobic ammonium oxidation (ANAMMOX) has emerged as a promising sustainable nitrogen removal technology that offers significant advantages over conventional nitrification–denitrification processes, such as reduced energy consumption, a 60% reduction in oxygen demand, and a 90% reduction in sludge production. However, the practical application of ANAMMOX is hindered by several challenges, including the slow growth of ANAMMOX bacteria, long start-up periods, and high sensitivity to environmental disturbances. Recent studies have highlighted the crucial role of extracellular polymeric substances (EPSs) in the formation, activity, and stability of ANAMMOX biofilms and granules. An EPS is a complex mixture of high-molecular-weight polymers secreted by microorganisms, mainly composed of polysaccharides, proteins, nucleic acids, and lipids. The diverse physicochemical properties and functional groups of EPSs enable them to serve as a structural scaffold, protective barrier, sorption site, electron shuttle, and nutrient source for ANAMMOX bacteria. This review aims to provide an overview of the latest research progress on harnessing the potential of EPSs to enhance the ANAMMOX process. The characteristics, compositions, and extraction methods of ANAMMOX-derived EPSs are summarized. The mechanisms of how EPSs facilitate the enrichment, immobilization, aggregation, and adaptation of ANAMMOX bacteria are elucidated. The strategies and effects of EPS supplementation on improving the performance and robustness of ANAMMOX reactors under various stresses are critically reviewed. The challenges and future perspectives of the EPS-mediated optimization of the ANAMMOX process are also discussed. This review sheds new light on exploiting EPSs as a renewable bioresource to develop more efficient and stable ANAMMOX applications for sustainable wastewater treatment.

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Section: Extracellular Polymeric Substances Enhance Anammox Activity ...mentioning

confidence: 99%

Harnessing the Potential of Extracellular Polymeric Substances in Enhancing ANAMMOX Processes: Mechanisms, Strategies, and Perspectives

Fan,

Jiang,

Wang

et al. 2024

Water

View full text Add to dashboard Cite

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New insight and enhancement mechanisms for Feammox process by electron shuttles in wastewater treatment — A systematic review

Sun

Zhang

et al. 2023

Bioresource Technology

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Synergistic mechanisms of denitrification in FeS2-based constructed wetlands: Effects of organic carbon availability under day-night alterations

Hao,

Lyu,

Qin

et al. 2024

Bioresource Technology

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Microbial driving mechanism for simultaneous removal of nitrogen and phosphorus in a pure anammox reactor under ferrous ion exposure

Cited by 18 publications

References 43 publications

Harnessing the Potential of Extracellular Polymeric Substances in Enhancing ANAMMOX Processes: Mechanisms, Strategies, and Perspectives

Harnessing the Potential of Extracellular Polymeric Substances in Enhancing ANAMMOX Processes: Mechanisms, Strategies, and Perspectives

New insight and enhancement mechanisms for Feammox process by electron shuttles in wastewater treatment — A systematic review

Synergistic mechanisms of denitrification in FeS2-based constructed wetlands: Effects of organic carbon availability under day-night alterations

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