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

Critical Reviews in Environmental Science and Technology, Год журнала: 2024, Номер 54(23), С. 1672 - 1691

Опубликована: Май 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.

Язык: Английский

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

Environmental Pollution, Год журнала: 2024, Номер 344, С. 123293 - 123293

Опубликована: Янв. 4, 2024

Язык: 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, Год журнала: 2024, Номер 62, С. 105347 - 105347

Опубликована: Май 1, 2024

Язык: 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, Год журнала: 2024, Номер 485, С. 149705 - 149705

Опубликована: Фев. 24, 2024

Язык: 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, Год журнала: 2024, Номер 279, С. 116385 - 116385

Опубликована: Май 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

Язык: 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, Год журнала: 2025, Номер 27(3)

Опубликована: Март 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.

Язык: Английский

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

The Science of The Total Environment, Год журнала: 2025, Номер 975, С. 179248 - 179248

Опубликована: Апрель 3, 2025

Язык: 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, Год журнала: 2023, Номер 377, С. 128940 - 128940

Опубликована: Март 21, 2023

Язык: 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, Год журнала: 2024, Номер 477, С. 135274 - 135274

Опубликована: Июль 21, 2024

Язык: Английский

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

Environmental Research, Год журнала: 2024, Номер 246, С. 118035 - 118035

Опубликована: Янв. 8, 2024

Nitrification of ammoniacal nitrogen (N-NH

Язык: Английский

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