Electro-triggered Joule heating method to synthesize single-phase CuNi nano-alloy catalyst for efficient electrocatalytic nitrate reduction toward ammonia

Nano Research, Journal Year: 2023, Volume and Issue: 16(5), P. 6632 - 6641

Published: March 20, 2023

Language: Английский

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Ecological interactions and the underlying mechanism of anammox and denitrification across the anammox enrichment with eutrophic lake sediments

Microbiome, Journal Year: 2023, Volume and Issue: 11(1)

Published: April 20, 2023

Abstract Background Increasing attention has recently been devoted to the anaerobic ammonium oxidation (anammox) in eutrophic lakes due its potential key functions nitrogen (N) removal for eutrophication control. However, successful enrichment of anammox bacteria from lake sediments is still challenging, partly ecological interactions between and denitrifying across such with remain unclear. Results This study thus designed fill knowledge gaps using bioreactors enrich more than 365 days. We continuously monitored influent effluent water, measured denitrification efficiencies, quantified bacteria, as well related N cycling genes. found that maximum efficiencies NH 4 + NO 2 − reached up 85.92% 95.34%, respectively. Accordingly, diversity decreased significantly enrichment, relative dominant (e.g., Candidatus Jettenia) Thauera, Afipia ) shifted considerably. The cooperation tended increase microbial community stability, indicating a coupling bacteria. Moreover, nirS -type denitrifiers showed stronger nirK during enrichment. Functional potentials depicted by metagenome sequencing confirmed denitrification. Metagenome-assembled genomes-based model indicated most could provide various materials amino acid, cofactors, vitamin Cross-feeding highlights importance increasing lakes. Conclusions greatly expands our understanding mechanisms among sediments, which sheds new insights into controlling eutrophication.

Language: Английский

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Microbial communities and sediment nitrogen cycle in a coastal eutrophic lake with salinity and nutrients shifted by seawater intrusion

Environmental Research, Journal Year: 2023, Volume and Issue: 225, P. 115590 - 115590

Published: Feb. 28, 2023

Language: Английский

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Effects of pristine and photoaged tire wear particles and their leachable additives on key nitrogen removal processes and nitrous oxide accumulation in estuarine sediments

Journal of Hazardous Materials, Journal Year: 2025, Volume and Issue: 487, P. 137136 - 137136

Published: Jan. 6, 2025

Language: Английский

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Deregulation of Ribosome Biogenesis in Nitrite-Oxidizing Bacteria Leads to Nitrite Accumulation

Environmental Science & Technology, Journal Year: 2023, Volume and Issue: 57(43), P. 16673 - 16684

Published: Oct. 20, 2023

Nitrite (NO2–) accumulation caused by nitrite-oxidizing bacteria (NOB) inhibition in nitrification is a double-edged sword, i.e., disaster aquatic environments but hope for innovating nitrogen removal technology wastewater treatment. However, little information available regarding the molecular mechanism of NOB at cellular level. Herein, we investigate response on NO2– established side-stream free ammonia treatment unit nitrifying reactor using integrated metagenomics and metaproteomics. Results showed that compared with baseline, relative abundance activity experimental stage decreased 91.64 68.66%, respectively, directly resulting rate 88%. Moreover, RNA polymerase, translation factors, aa-tRNA ligase were significantly downregulated, indicating protein synthesis was interfered during accumulation. Further investigations ribosomal proteins GTPases, responsible bindings between either rRNA or ribosome subunits, remarkably downregulated. This suggests biogenesis severely disrupted, which might be key reason inhibited synthesis. Our findings fill knowledge gap underlying mechanisms accumulation, would beneficial regulating engineered systems.

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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Extreme precipitation alters soil nitrogen cycling related microbial community in karst abandoned farmland

Applied Soil Ecology, Journal Year: 2024, Volume and Issue: 197, P. 105345 - 105345

Published: Feb. 26, 2024

Language: Английский

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Nitrogen and sulfur cycling and their coupling mechanisms in eutrophic lake sediment microbiomes

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 928, P. 172518 - 172518

Published: April 15, 2024

Language: Английский

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Response mechanism of bacterial community and physicochemical factors evolution to ecological restoration in sediment and water dual medium of Baiyangdian Lake

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 70, P. 106949 - 106949

Published: Jan. 9, 2025

Language: Английский

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Nitrate Nitrogen Concentrations Drive Microbial Community Composition and Functional Responses in Microplastic Surface Biofilms

Journal of environmental chemical engineering, Journal Year: 2025, Volume and Issue: unknown, P. 115504 - 115504

Published: Jan. 1, 2025

Language: Английский

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