Effect of carbon source on carbon and nitrogen metabolism of common heterotrophic nitrification-aerobic denitrification pathway

Chemosphere, Journal Year: 2024, Volume and Issue: 361, P. 142525 - 142525

Published: June 3, 2024

Language: Английский

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New insights into microbial community for simultaneous removal of carbon and nitrogen via heterotrophic nitrification aerobic denitrification process

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(3), P. 112896 - 112896

Published: April 25, 2024

Language: Английский

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Denitrification Mechanism of Heterotrophic Aerobic Denitrifying Pseudomonas hunanensis Strain DC-2 and Its Application in Aquaculture Wastewater

Water, Journal Year: 2024, Volume and Issue: 16(11), P. 1625 - 1625

Published: June 6, 2024

A novel heterotrophic aerobic denitrifying Pseudomonas hunanensis strain DC-2 was screened from the sediments of Lake Dianchi and identified with high nitrification/denitrification ability. Within 30 h, removal efficiency ammonium-N nitrate-N could reach 98.8% 88.4%, respectively. The results single-factor experiments indicated that exhibited excellent denitrification ability under conditions using sodium citrate as nitrogen source, an initial pH 7, a C/N ratio 10, temperature °C. Nitrogen balance suggested this removed N mainly via assimilation. Moreover, pathway explored by genome enzymatic assays, complex metabolism established, including nitrification-aerobic (HN-AD), assimilatory reduction nitrate (ANRA), ammonia Additionally, immobilized into particles for denitrification, demonstrating efficacy in continuous total (84.8% TN). Hence, demonstrated significant potential treating real aquaculture wastewater.

Language: Английский

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Enhanced nitrogen removal through bioaugmentation with Stutzerimonas stutzeri SW22: From denitrification mechanism to optimized sequencing batch reactor

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 71, P. 107252 - 107252

Published: Feb. 13, 2025

Language: Английский

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Characterization and performance of efficient heterotrophic nitrification and aerobic denitrification by Comamonas testosteroni HR5 under low temperature and high alkalinity

Journal of Water Process Engineering, Journal Year: 2025, Volume and Issue: 72, P. 107474 - 107474

Published: March 13, 2025

Language: Английский

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Sulfur cycle process accelerates microbial fuel cells driven denitrification system: Low sulfate yield and enrichment of functional microorganisms

Bioresource Technology, Journal Year: 2025, Volume and Issue: unknown, P. 132432 - 132432

Published: March 1, 2025

Language: Английский

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Elucidating biogeochemical characterization of nitrogen in the vadose zone integrating geochemistry, microorganism, and numerical simulation

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 947, P. 174687 - 174687

Published: July 10, 2024

Language: Английский

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Identification and genomic analysis of a thermophilic bacterial strain that reduces ammonia loss from composting

Microbiology Spectrum, Journal Year: 2024, Volume and Issue: 12(10)

Published: Aug. 20, 2024

ABSTRACT Ammonia loss is the most severe during high-temperature stage (>50°C) of aerobic composting. Regulating ammonia volatilization this period via thermophilic microbes can significantly improve nitrogen content compost and reduce air pollution due to loss. In study, an ammonia-assimilating bacterial strain named LL-8 was screened out as having strongest conversion rate (32.7%) at high temperatures (50°C); it able 42.9% volatile in chicken manure composting when applied a stage. Phylogenetic analysis revealed that highly similar (>98%) with Priestia aryabhattai B8W22 T identified aryabhatta . Genomic analyses indicated complete genome comprised 5,060,316 base pairs GC 32.7% encoded 5,346 genes. Genes, such gudB , rocG glnA gltA gltB enable bacteria assimilate ammonium were annotated based on comparison Kyoto Encyclopedia Genes Genomes (KEGG) database. The results implied application P. would be promising solution mitigate IMPORTANCE Aerobic one essential ways recycle organic waste, but its significant loss, especially period, which also harmful environment. use source helpful we called temperature (50°C) resistance strong ability. It effects decreasing whole-genome could utilize by assimilation decrease volatilization. Our work provides theoretical basis for functional control from

Language: Английский

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New Insights into Microbial Community for Simultaneous Removal of Carbon and Nitrogen Via Heterotrophic Nitrification Aerobic Denitrification Process

Published: Jan. 1, 2024

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Language: Английский

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Characterization of the Heterotrophic Nitrifying-Aerobic Denitrifying Bacterium Citrobacter Freundii Zb403 at Low C/N and High Ammonia-Nitrogen: Response Surface Methodology Optimization, Kinetic Modeling, and Denitrification Pathway

Published: Jan. 1, 2024

Citrobacter freundii ZB403 isolated from activated sludge has heterotrophic nitrification-aerobic denitrification (HN-AD) capacity. was most effective in nitrogen removal when C/N=5.16, temperature 25.13°C, and initial NH4+-N 735.93 mg·L-1. Under the above conditions, average rate (NRR) 11.99 mg·(L·h)-1, highest NRR 28.05 mg·(L·h)-1. PCR successfully amplified functional genes hao, napA, narG nirK that are associated with HN-AD predicted pathway. The results indicated shows promising potential for application wastewater biological treatment due to its performance, which can produce at low C/N high ammonia-nitrogen.

Language: Английский

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