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

et al.

Water, Journal Year: 2024, Volume and Issue: 16(23), P. 3426 - 3426

Published: Nov. 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.

Language: Английский

Biochar Characteristics and Application: Effects on Soil Ecosystem Services and Nutrient Dynamics for Enhanced Crop Yields DOI Creative Commons
Ojone Anyebe, Fatihu Kabir Sadiq, Bonface Ombasa Manono

et al.

Nitrogen, Journal Year: 2025, Volume and Issue: 6(2), P. 31 - 31

Published: April 27, 2025

Although intensive farming practices have greatly increased food production, they undermined the soil ecosystem services on which agriculture depends. Biochar application in soils is increasingly gaining worldwide acceptance as a means of addressing these environmental challenges while enhancing agricultural productivity. offers dual benefits that support security and ecological well-being through enhanced fertility plant nutrition. These include water retention, promotion microbial functioning, carbon sequestration, nutrient absorption, among others. In spite known benefits, many studies continue to emphasize roles biochar plays health crop yields but often neglect influence characteristics, are key optimizing services. Thus, it important understand how characteristics supporting, regulating, provisioning This review comprehensive integrative assessment biochar’s rather than examining each service individually. The focus feedstock material pyrolysis temperature determine generated efficacy supplying dynamics for yields.

Language: Английский

Citations

0

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

et al.

Water, Journal Year: 2024, Volume and Issue: 16(23), P. 3426 - 3426

Published: Nov. 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.

Language: Английский

Citations

0