Lumen air pressure regulated multifunctional microbiotas in membrane-aerated biofilm reactors for simultaneous nitrogen removal and antibiotic elimination from aquaculture wastewater

Water Research, Journal Year: 2024, Volume and Issue: 251, P. 121102 - 121102

Published: Jan. 6, 2024

Language: Английский

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Advances and solutions in biological treatment for antibiotic wastewater with resistance genes: A review

Journal of Environmental Management, Journal Year: 2024, Volume and Issue: 368, P. 122115 - 122115

Published: Aug. 8, 2024

Language: Английский

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Dissimilatory nitrate reduction to ammonium driven by different electron donors: Mechanisms, recent advances, and future perspectives

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160625 - 160625

Published: Feb. 1, 2025

Language: Английский

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Research advances in application of mainstream anammox processes: Roles of quorum sensing and microbial metabolism

Chemosphere, Journal Year: 2023, Volume and Issue: 333, P. 138947 - 138947

Published: May 15, 2023

Language: Английский

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Mechanisms underlying the interactions and adaptability of nitrogen removal microorganisms in freshwater sediments

Advanced Biotechnology, Journal Year: 2024, Volume and Issue: 2(3)

Published: June 17, 2024

Microorganisms in eutrophic water play a vital role nitrogen (N) removal, which contributes significantly to the nutrient cycling and sustainability of ecosystems. However, mechanisms underlying interactions adaptation strategies N removal microorganisms ecosystems remain unclear. We thus analyzed field sediments collected from freshwater ecosystem, enriched microorganisms, examined their function adaptability through amplicon, metagenome metatranscriptome sequencing. found that activities could be affected potential competition inhibition among microbial metabolic pathways. High-diversity communities generally increased abundance expression functional genes. Further enrichment experiments showed led development simplified but more stable communities, characterized by similar evolutionary patterns tighter interactions, adaptability. Notably, sustained provision NH4+ NO2- during potentially strengthen interconnections denitrification, anaerobic ammonium oxidation (anammox) dissimilatory nitrate reduction (DNRA) processes. Moreover, identification shared traits anammox DNRA implies important cooperative associations microorganisms. Our findings highlight affect adaptive key taxa involved removal.

Language: Английский

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Mixotrophic anammox bacteria outcompete dissimilatory nitrate reduction and denitrifying bacteria in propionate-containing wastewater

Bioresource Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132077 - 132077

Published: Jan. 1, 2025

Language: Английский

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Efficient nitrogen removal from municipal wastewater by an autotrophic-heterotrophic coupled anammox system: The up-regulation of key functional genes

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 904, P. 166359 - 166359

Published: Aug. 16, 2023

Language: Английский

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Robust rehabilitation of anammox system by granular activated carbon under long-term starvation stress: Microbiota restoration and metabolic reinforcement

Bioresource Technology, Journal Year: 2023, Volume and Issue: 393, P. 130113 - 130113

Published: Nov. 25, 2023

Language: Английский

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A two-stage partial nitritation-denitritation/anammox (PN-DN/A) process to treat high-solid anaerobic digestion (HSAD) reject water: Verification based on pilot-scale and full-scale projects

Water Research X, Journal Year: 2024, Volume and Issue: 22, P. 100213 - 100213

Published: Jan. 1, 2024

High-solid anaerobic digestion (HSAD) reject water, distinguished by elevated levels of chemical oxygen demand (COD), NH4+-N and an imbalanced COD/TIN, presents a significant challenge for treatment through conventional partial nitritation/ anammox (PN/A) process. This study introduced revised two-stage PN/A process, namely nitritation/denitritation-anammox (PN-DN/A) Its effectiveness was investigated both pilot-scale (12 t/d) full-scale (400 operations, showcasing stable operation with impressive total removal rate over 90 % inorganic nitrogen (TIN) exceeding 60 COD. Notably, 30 TIN eliminated heterotrophic denitritation in nitritation-denitritation (PN-DN) stage, while approximately 55 occurred the stage ammonium oxidizing bacteria (AnAOB) enrichment (Candidatus Kuenenia, 25.9 26.6 relative abundance pilot full scale). In PN-DN aerobic-anaerobic alternation promoted organics elimination (around 50 COD) balanced species. Microbial metagenomic analysis verified coupling between autotrophic demonstrated that acted as protective buffer stage. comprehensive highlights PN-DN/A process's efficacy stably treating HSAD water.

Language: Английский

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Mixotrophic Metabolism and Oxygen Detoxification Mitigate Antibiotic Stress in Mainstream Anammox Process Under Microaerobic Condition

ACS ES&T Water, Journal Year: 2024, Volume and Issue: 4(6), P. 2553 - 2563

Published: May 3, 2024

Given the prevalence and risk of antibiotics advantages anaerobic ammonium oxidation (anammox) process, this study evaluated compared mainstream sidestream anammox process performance in treating wastewater containing typical β-lactam antibiotic under microaerobic conditions. The was able to tolerate higher concentrations cefalexin relatively low dissolved oxygen (DO) concentration, while DO slightly reduced nitrogen removal efficiency but it still than 70%. In contrast, exhibited a poor tolerance stress. Combined with metagenomics transcriptomics, comparative analysis 154 high-quality metagenomic assembly genomes consortia revealed potential mechanism mitigating Results showed that expressions genes related dissimilatory nitrate reduction ammonia were significantly upregulated condition. As dominant functional bacteria, Candidatus Kuenenia stuttgartiensis HNU0043 had detoxification ·O2– metabolism secondary product H2O2, which mainly depended on cooperation Fe–Mn family superoxide dismutase catalase. Expressions involved various carbon pathways also detected Ca. HNU0043, explaining resistance stress through biodegradation. Therefore, tolerated conditions, more beneficial for maintaining its stability. This work provides insights into molecular mechanisms underlying microbiota adaptability oxygen, further expending implementation process.

Language: Английский

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