Key enzymes, functional genes, and metabolic pathways of the nitrogen removal-related microorganisms

Critical Reviews in Environmental Science and Technology, Journal Year: 2024, Volume and Issue: 54(23), P. 1672 - 1691

Published: May 16, 2024

Biological nitrogen removal is a classic technique for removing from wastewater that has been studied extensively and gives high rate, energy efficiency, relatively environmentally benign. Using biological processes to treat the diverse components of requires thorough understanding microorganisms pathways involved. However, information regarding participating in remains limited. This review presents current knowledge researches into these microorganisms, including ammonia oxidizing bacteria, archaea, complete oxidation nitrite-oxidizing anaerobic ammonium denitrifying heterotrophic nitrification-aerobic denitrification bacteria. The metabolic enzymatic reactions involved cycle abovementioned are demonstrated. key enzymes, functional genes, removal-related were discussed. Additionally, advantages different oxidation, denitrifying, HN-AD described. Finally, limitations strategies unraveling presented. aim improve our principle advanced allow possible improvements treatment be identified.

Language: Английский

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Advanced treatment of antibiotic-polluted wastewater by a consortium composed of bacteria and mixed cyanobacteria

Environmental Pollution, Journal Year: 2024, Volume and Issue: 344, P. 123293 - 123293

Published: Jan. 4, 2024

Language: Английский

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Conversion behavior of heterotrophic nitrification - aerobic denitrification bacterium Paracoccus denitrificans HY-1 in nitrogen and phosphorus removal

Journal of Water Process Engineering, Journal Year: 2024, Volume and Issue: 62, P. 105347 - 105347

Published: May 1, 2024

Language: Английский

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Highly efficient low-temperature biodegradation of nitrogenous pollutions in domestic wastewater via immobilized-microbial bioaugmentation coupled with hybrid membrane bioreactor

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 485, P. 149705 - 149705

Published: Feb. 24, 2024

Language: Английский

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Acid-tolerant Pseudomonas citronellolis YN-21 exhibits a high heterotrophic nitrification capacity independent of the amo and hao genes

Ecotoxicology and Environmental Safety, Journal Year: 2024, Volume and Issue: 279, P. 116385 - 116385

Published: May 20, 2024

Heterotrophic nitrifying bacteria are found to be promising candidates for implementation in wastewater treatment systems due their tolerance extreme environments. A novel acid-resistant bacterium, Pseudomonas citronellolis YN-21, was isolated and reported have exceptional heterotrophic nitrification capabilities acidic condition. At pH 5, the highest NH

Language: Английский

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New Insight Into the Mechanism of Nitrite Enhancement on Heterotrophic Nitrification and Aerobic Denitrification Bacterium in Gene Expression

Environmental Microbiology, Journal Year: 2025, Volume and Issue: 27(3)

Published: March 1, 2025

ABSTRACT The growth and nitrogen metabolism of heterotrophic nitrification‐aerobic denitrification (HN‐AD) bacteria are affected by nitrite, but the mechanisms underlying this for strain Acinetobacter johnsonii EN‐J1 unclear. In study, addition 10 mg/L nitrite increased reduction rate ammonium 1.0 mg/L/h, 20 nitrate 3.9 mg/L/h. Compared with control, reductase activity, electron transfer adenosine triphosphate content were enhanced 142.0%, 278.0% 279.0%, respectively, in removal process after nitrite. whole genome was annotated genes such as narGHI , narK nsrR nirBD nasA glnA gltB gdhA amt . Transcriptome analysis showed that triggered significant upregulation several key pathways, including metabolism, tricarboxylic acid cycle, amino enhancing denitrification. expression ( narG hmp ) detected real‐time quantitative polymerase chain reaction. These results suggested enhances increasing genes, levels, which is important elucidating mechanism promotion biological efficiency.

Language: Английский

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Microbial communities in low-pH concrete: Implications for deep geological radioactive waste repositories

The Science of The Total Environment, Journal Year: 2025, Volume and Issue: 975, P. 179248 - 179248

Published: April 3, 2025

Language: Английский

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Low-temperature torrefaction assisted with solid-state KOH/urea pretreatment for accelerated methane production in wheat straw anaerobic digestion

Bioresource Technology, Journal Year: 2023, Volume and Issue: 377, P. 128940 - 128940

Published: March 21, 2023

Language: Английский

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Trade-off between sulfidated zero-valent iron reactivity and air stability: Regulation of iron sulfides by ammonium dihydrogen phosphate

Journal of Hazardous Materials, Journal Year: 2024, Volume and Issue: 477, P. 135274 - 135274

Published: July 21, 2024

Language: Английский

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Assessment of nitrification process in a sequencing batch reactor: Modelling and genomic approach

Environmental Research, Journal Year: 2024, Volume and Issue: 246, P. 118035 - 118035

Published: Jan. 8, 2024

Nitrification of ammoniacal nitrogen (N-NH

Language: Английский

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