Research advances of ammonia oxidation microorganisms in wastewater: metabolic characteristics, microbial community, influencing factors and process applications

Zhao, Weihua; Bi, Xuejun; Bai, Meng; Wang, Yanyan

doi:10.1007/s00449-023-02866-5

Cited by 30 publications

(9 citation statements)

References 135 publications

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“…This could be explained by the low MLVSS concentration, which represents an estimate of the active bacterial content [29], and the relatively high concentration of ammonium in the feeding wastewater (Table 2). These results suggested that ammonium oxidation may have tended toward its maximum rate, which was higher than the maximum rate of nitrite oxidation, leading to a slight residual nitrite accumulation [30].…”

Section: Permeate Quality In the Different Sfd Mbr Testsmentioning

confidence: 93%

Optimal Mesh Pore Size Combined with Periodic Air Mass Load (AML) for Effective Operation of a Self-Forming Dynamic Membrane BioReactor (SFD MBR) for Sustainable Treatment of Municipal Wastewater

Boulerial,

Salerno,

Castrogiovanni

et al. 2024

Processes

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A self-forming dynamic membrane bioreactor (SFD MBR) is a cost-effective alternative to conventional MBR, in which the synthetic membrane is replaced by a “cake layer,” an accumulation of the biological suspension over a surface of inert, low-cost support originated by filtration itself. Under optimized conditions, the cake layer is easy to remove and quick to form again, resulting a “dynamic membrane.” The permeate of the SFD MBR has chemo-physical characteristics comparable to those of conventional ultrafiltration-based MBR. In this paper, two nylon meshes with pore sizes of 20 and 50 µm, respectively, were tested in a bench-scale SFD MBR in which an air mass load (AML) was periodically supplied tangentially to the filtration surface to maintain filtration effectiveness. The SFD MBR equipped with 20 µm nylon mesh coupled with 5 min of AML every 4 h showed the best performance, ensuring both a permeate with turbidity values always below 3 NTU and revealing no increases in transmembrane pressure (TMP) with manual maintenance needs. A benchmark test with the only difference of a suction break (relaxation) instead of AML was conducted under identical operating conditions for validation with an already known maintenance strategy. This latter test produced a permeate of very good quality, but it needed frequent TMP increases and consequent manual cleanings, showing that a periodic AML coupled with the use of a 20 µm mesh can be an optimal strategy for long-term operation of SFD MBR.

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Section: Permeate Quality In the Different Sfd Mbr Testsmentioning

confidence: 93%

Optimal Mesh Pore Size Combined with Periodic Air Mass Load (AML) for Effective Operation of a Self-Forming Dynamic Membrane BioReactor (SFD MBR) for Sustainable Treatment of Municipal Wastewater

Boulerial,

Salerno,

Castrogiovanni

et al. 2024

Processes

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“…2) The leachate is introduced to the treatment reactor's reactive materials or electrodes. Granules or particles are the most common shape that reactive materials take (Zhao et al 2023). 3) Oxidation-reduction (redox) processes occur when leachate comes into contact with reactive materials.…”

Section: Chemical and Physical Treatmentmentioning

confidence: 99%

“…3) Oxidation-reduction (redox) processes occur when leachate comes into contact with reactive materials. Electrodes made of iron corrode, producing electrons that can neutralize pollutants in the leachate (Zhao et al 2023).…”

Section: Chemical and Physical Treatmentmentioning

confidence: 99%

Utilization of microbial fuel cells as a dual approach for landfill leachate treatment and power production: a review

Ishaq,

Said,

Azman

et al. 2023

Environ Sci Pollut Res

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Landfill leachate, which is a complicated organic sewage water, presents substantial dangers to human health and the environment if not properly handled. Electrochemical technology has arisen as a promising strategy for effectively mitigating contaminants in landfill leachate. In this comprehensive review, we explore various theoretical and practical aspects of methods for treating landfill leachate. This exploration includes examining their performance, mechanisms, applications, associated challenges, existing issues, and potential strategies for enhancement, particularly in terms of cost-effectiveness. In addition, this critique provides a comparative investigation between these treatment approaches and the utilization of diverse kinds of microbial fuel cells (MFCs) in terms of their effectiveness in treating landfill leachate and generating power. The examination of these technologies also extends to their use in diverse global contexts, providing insights into operational parameters and regional variations. This extensive assessment serves the primary goal of assisting researchers in understanding the optimal methods for treating landfill leachate and comparing them to different types of MFCs. It offers a valuable resource for the large-scale design and implementation of processes that ensure both the safe treatment of landfill leachate and the generation of electricity. The review not only provides an overview of the current state of landfill leachate treatment but also identifies key challenges and sets the stage for future research directions, ultimately contributing to more sustainable and effective solutions in the management of this critical environmental issue.

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“…NH 4 + -N tended to migrate from sediment to overlying water due to their concentration difference (Liu, Yang, et al, 2021;Yu et al, 2019;Zhou et al, 2023). Under the action of various microorganisms, the transformation of nitrogen in the pipeline includes ammonization, nitrification, denitrification, and nitrogen fixation (Li et al, 2019;Pai et al, 2013;Zhao et al, 2023). Among them, the denitrification process is common due to the anoxic environment of the sewage pipeline (He et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Effects of flow rate and wastewater concentration on the transformation of nitrogen in sediment–water system of sewage pipelines

Xie,

Liu,

Zhou

et al. 2024

Water Environment Research

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In this work, the transformation law of nitrogen in sediment–water system under different flow rates and wastewater concentrations were investigated in a simulated sewage pipeline system. Results showed that the different flow rates and wastewater concentrations in the pipeline caused differences in microbial community in sediments and nitrogen transformation. When the flow rate increased from 0.05 to 0.2 m/s, the scouring effect was enhanced, resulting in higher concentrations of NH4+–N and NO3−–N in the overlying water. At 0.2 m/s, the relative abundance of Clostridium_sensu_stricto_1 in sediments was higher, resulting in a greater conversion of amino acid nitrogen (AAN) to NH4+–N. Meanwhile, many denitrifying bacteria (Trichococcus, Dechloromonas, norank_f__norank_o__Gaiellales, Thiobacillus) had high relative abundance in the sediments, and the denitrification process was common. When the wastewater concentration was high, the nitrification reaction was great in overlying and interstitial water. Moreover, the ammoniation process was great in the sediments, and the variation flux of AAN was large (remarkably reduced).Practitioner Points AAN transformed to NH4+–N in sediment under different flow rate and concentration. Scouring was enhanced at 0.2 m/s, increasing nitrogen contents in overlying water. Difference in microbial community led to more AAN conversion to NH4+–N at 0.2 m/s. The ammoniation process was greater in sediment at a high concentration of sewage. NH4+–N migrated from overlying water to sediment at a high concentration of sewage.

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Research advances of ammonia oxidation microorganisms in wastewater: metabolic characteristics, microbial community, influencing factors and process applications

Cited by 30 publications

References 135 publications

Optimal Mesh Pore Size Combined with Periodic Air Mass Load (AML) for Effective Operation of a Self-Forming Dynamic Membrane BioReactor (SFD MBR) for Sustainable Treatment of Municipal Wastewater

Optimal Mesh Pore Size Combined with Periodic Air Mass Load (AML) for Effective Operation of a Self-Forming Dynamic Membrane BioReactor (SFD MBR) for Sustainable Treatment of Municipal Wastewater

Utilization of microbial fuel cells as a dual approach for landfill leachate treatment and power production: a review

Effects of flow rate and wastewater concentration on the transformation of nitrogen in sediment–water system of sewage pipelines

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