Biochar’s role to achieve multi-pathway nitrogen removal in anammox systems: Insights from electron donation and selective microbial enrichment

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 482, P. 148824 - 148824

Published: Jan. 18, 2024

Language: Английский

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Achieving Stable Partial Denitrification by Selective Inhibition of Nitrite Reductase with the Biosafe Aprotic Solvent DMSO

Environmental Science & Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 19, 2024

The recently proposed partial denitrification (PD), terminating nitrate reduction to nitrite, has been regarded as a promising alternative nitrite supplying for anammox bacteria. most important aspect of the PD process engineering application is stable and continuous supply nitrite. However, activity reductase often higher than that (NIR), making it difficult accumulate during process. Herein, strategy achieving efficient using biosafe additive dimethyl sulfoxide (DMSO) was constructed, mechanism DMSO inhibiting NIR analyzed. addition reduced expression gene, 1% can significantly inhibit enzyme achieve When concentration increased 3.5%, almost inhibited with only 0.95 mg nitrite/min. no inhibitory effect on (NAR) enzyme. affinity constant NAR −2.4 kcal/mol, while high −3.1 kcal/mol. shows NIR. Moreover, occupy same catalytic cavity in enzyme, which fundamental reason why selectively inhibits This study provides new idea realizing function.

Language: Английский

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Response of nitrite accumulation, sludge characteristic and microbial transition to carbon source during the partial denitrification (PD) process

The Science of The Total Environment, Journal Year: 2023, Volume and Issue: 894, P. 165043 - 165043

Published: June 22, 2023

Language: Английский

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Nitrite production mechanism and microbial evolution characteristic influenced by pH during partial denitrification (PD) process

Journal of environmental chemical engineering, Journal Year: 2023, Volume and Issue: 11(6), P. 111451 - 111451

Published: Nov. 8, 2023

Language: Английский

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Upgrade and reconstruction of biological processes in municipal wastewater treatment plants

Desalination and Water Treatment, Journal Year: 2024, Volume and Issue: 317, P. 100299 - 100299

Published: Jan. 1, 2024

Traditional activated-sludge treatment technologies, such as anaerobic/anoxic/aerobic processes, oxidation ditch and sequential batch reactors, play a crucial role in the removal of nitrogen phosphorus from municipal wastewater. The synergistic interactions among functional microorganisms, primarily nitrogen-removal organisms phosphorus-accumulating organisms, are paramount these processes. However, traditional activated sludge technology consumes large amounts energy produces substantial volume waste-activated sludge, necessitating upgrade wastewater plants (WWTPs) focusing on sustainable development goals. This review analyzes characterizes key microorganisms (Nitrosomonas, Nitrosospira, Nitrobacter, Nitrospira, Thauera, Pseudomonas, Candidatus Brocadia, Kuenenia, Accumulibacter) involved treatment. It also explores impact operating conditions, influent quality, reactor configurations regulation for efficient nutrient removal, with emphasis upgrading reconstructing techniques full-scale anaerobic ammonium (anammox) Integrated fixed-film sludge-based (IFAS), aerobic granular (AGS), moving bed biofilm (MBBR) technologies promising to enhance transform conventional realizing new engineering applications practices. Other developments use heterotrophic denitrifying bacteria Thauera anammox (Candidatus Brocadia Kuenenia) mainstream partial denitrification/anammox which potentially expandable WWTPs.

Language: Английский

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Biological nitrogen removal from nitrate sewage via novel CANDAN process in continuous-flow UASB reactor with municipal wastewater as co-substrate

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 488, P. 150847 - 150847

Published: April 5, 2024

Language: Английский

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Integrating network and in-silico simulation insights into the ecological interactions shaped by carbon sources in partial denitrification and anammox system

Water Research, Journal Year: 2025, Volume and Issue: 276, P. 123246 - 123246

Published: Feb. 5, 2025

Language: Английский

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Research progress of anaerobic ammonium oxidation (Anammox) process based on integrated fixed‐film activated sludge (IFAS)

Environmental Microbiology Reports, Journal Year: 2024, Volume and Issue: 16(2)

Published: March 5, 2024

Abstract The integrated fixed‐film activated sludge (IFAS) process is considered one of the cutting‐edge solutions to traditional wastewater treatment challenges, allowing suspended and attached biofilm grow in same system. In addition, coupling IFAS with anaerobic ammonium oxidation (Anammox) can further improve efficiency biological denitrification. This paper summarises research progress coupled anammox process, including partial nitrification anammox, simultaneous denitrification, denitrification technologies, describes factors that limit development related processes. effects dissolved oxygen, influent carbon source, retention time, temperature, microbial community, nitrite‐oxidising bacteria inhibition methods on are presented. At this gives an outlook future focus engineering practice direction process.

Language: Английский

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Comparation on the responses and resilience of single-anammox system and synergistic partial-denitrification/anammox system to long-term nutrient starvation: Performance and metagenomic insights

Bioresource Technology, Journal Year: 2024, Volume and Issue: unknown, P. 131694 - 131694

Published: Oct. 1, 2024

Language: Английский

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Stable continuous flow CANDAN process transitioning from anammox UASB reactor by facilitating indigenous nitrite-producing denitrification community

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 926, P. 171929 - 171929

Published: March 23, 2024

Language: Английский

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