Key enzymes involved in anammox‐based processes for wastewater treatment: An applied overview

Autor: Bruno Venturin, Heloisa Campeão Rodrigues, Gabriela Bonassa, Camila Ester Hollas, Alice Chiapetti Bolsan, Fabiane Goldschmidt Antes, Marina Celant De Prá, Gislaine Fongaro, Helen Treichel, Airton Kunz
Rok vydání: 2022
Předmět:
Zdroj: Water Environment Research. 94
ISSN: 1554-7531
1061-4303
DOI: 10.1002/wer.10780
Popis: The anaerobic ammonium oxidation (anammox) process has attracted significant attention as an economic, robustness, and sustainable method for the treatment of nitrogen (N)-rich wastewater. Anammox bacteria (AnAOB) coexist with other microorganisms, and particularly with ammonia-oxidizing bacteria (AOB) and/or heterotrophic bacteria (HB), in symbiosis in favor of the substrate requirement (ammonium and nitrite) of the AnAOB being supplied by these other organisms. The dynamics of these microbial communities have a significant effect on the N-removal performance, but the corresponding metabolic pathways are still not fully understood. These processes involve many common metabolites that may act as key factors to control the symbiotic interactions between these organisms, to maximize N-removal efficiency from wastewater. Therefore, this work overviews the current state of knowledge about the metabolism of these microorganisms including key enzymes and intermediate metabolites and summarizes already reported experiences based on the employment of certain metabolites for the improvement of N-removal using anammox-based processes. PRACTITIONER POINTS: Approaches knowledge about the biochemistry and metabolic pathways involved in anammox-based processes. Some molecular tools can be used to determine enzymatic activity, serving as an optimization in nitrogen removal processes. Enzymatic evaluation allied to the physical-chemical and biomolecular analysis of the nitrogen removal processes expands the application in different effluents.
Databáze: OpenAIRE
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