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Effect of pH Shift on the Phosphate-Accumulating Microorganisms-Enriched Community in a Sequencing Batch Reactorстатья
- Авторы: Dorofeev A.G., Pelevina A.V., Grouzdev E.V., Mardanov A.V., Pimenov N.V.
- Журнал: Microbiology
- Том: 93
- Номер: 5
- Год издания: 2024
- Издательство: Pleiades Publishing, Ltd
- Местоположение издательства: Road Town, United Kingdom
- Первая страница: 686
- Последняя страница: 690
- DOI: 10.1134/S0026261724605906
- Аннотация: Changes in the structure and properties of a microbial community of a sequencing batch reactor(SBR) enriched with phosphate-accumulating microorganisms (PAO) after a pH shift to more acidic values (pH 6.7‒7.1) were studied in. The relative abundance of Ca. Accumulibacter decreased from 43.6 to 13.9%, while abundance of potential PAO belonging to the genera Dechloromonas and Thauera increased. The overall share of PAO changed insignificantly (40‒43%). The share of glycogen-accumulating microorganisms (GAO), the main competitors of PAO, remained low throughout the experiment: abundance of the Competibacter 16S rRNA gene fragments before and after the pH shift was 2‒4%. While decrease in pH resulted in a drop in the amount of phosphates released during the anaerobic phase, the amount of phosphorus in the biomass (15‒17%) remained high, as well as phosphorus removal (92‒94%)
- Добавил в систему: Максимова Ирина Аркадьевна