Initiation of Anammox in an Up-Flow Anaerobic Sludge Bed Reactor: Bacterial Community Structure, Nitrogen Removal Functional Genes, and Antibiotic Resistance Genes DOI Open Access
Xin Li, Junqin Yao, Yangyang Jia

и другие.

Water, Год журнала: 2024, Номер 16(23), С. 3426 - 3426

Опубликована: Ноя. 28, 2024

Anaerobic ammonia oxidation (anammox) is considered an efficient and low-energy biological nitrogen removal process. However, there are limited studies addressing the changes in antibiotic resistance genes (ARGs) during startup of anammox reactor inoculated with activated sludge. In this study, up-flow anaerobic sludge bed (UASB) was initiated synthetic wastewater at room temperature (20–28 °C). Metagenomic sequencing employed to analyze shifts bacterial community, functional genes, ARGs both seeding The results show that achieved activity after 122 days cultivation, NH4+-N NO2−-N rates reaching 99.8% 99.6%, respectively. Compared those sludge, relative abundance bacterium Candidatus kuenenia increased from 0.01% 50.86%, while denitrifying Acidovorax bacteria decreased 8.02% 1.77%. Meanwhile, Nitrosomonas declined 2.91% 1.87%. hzs, hdh, nirK, nirS 294.77 RPKM 155.62 These findings offer valuable insights into initiation process using ordinary as inoculum provide a scientific basis for mitigation through technology.

Язык: Английский

Initiation of Anammox in an Up-Flow Anaerobic Sludge Bed Reactor: Bacterial Community Structure, Nitrogen Removal Functional Genes, and Antibiotic Resistance Genes DOI Open Access
Xin Li, Junqin Yao, Yangyang Jia

и другие.

Water, Год журнала: 2024, Номер 16(23), С. 3426 - 3426

Опубликована: Ноя. 28, 2024

Anaerobic ammonia oxidation (anammox) is considered an efficient and low-energy biological nitrogen removal process. However, there are limited studies addressing the changes in antibiotic resistance genes (ARGs) during startup of anammox reactor inoculated with activated sludge. In this study, up-flow anaerobic sludge bed (UASB) was initiated synthetic wastewater at room temperature (20–28 °C). Metagenomic sequencing employed to analyze shifts bacterial community, functional genes, ARGs both seeding The results show that achieved activity after 122 days cultivation, NH4+-N NO2−-N rates reaching 99.8% 99.6%, respectively. Compared those sludge, relative abundance bacterium Candidatus kuenenia increased from 0.01% 50.86%, while denitrifying Acidovorax bacteria decreased 8.02% 1.77%. Meanwhile, Nitrosomonas declined 2.91% 1.87%. hzs, hdh, nirK, nirS 294.77 RPKM 155.62 These findings offer valuable insights into initiation process using ordinary as inoculum provide a scientific basis for mitigation through technology.

Язык: Английский

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