ABSTRACT: A Dual-Stress-Resistant Halomonas ZC-1 with Efficient Heterotrophic Nitrification and Aerobic Denitrification under Low Temperature and High Salinity
Project description:Roothans et al., analyzed heterotrophic denitrification processes that can be an important source of nitrous oxide. We employed planktonic nitrification-inhibited denitrifying enrichment cultures under alternating oxic-anoxic conditions. The dynamic conditions resulted in a general presence of the denitrifying enzymes. Overall, we show that aerobic denitrification should not be neglected as an ecologically relevant process. Contact author: m.laureni@tudelft.nl
2024-07-17 | PXD042057 | Pride
Project description:Heterotrophic nitrification aerobic denitrification bacteria for high salt wastewater treatment
| PRJNA1025948 | ENA
Project description:Synergistic effects of disinfectants chloroxylenol and benzethonium chloride on efficient heterotrophic nitrification-aerobic denitrification functional strain.
Project description:Nitrogen and arsenic contaminants often coexist in groundwater, and microbes show the potential for simultaneous removal of nitrogen and arsenic. Here, we reported that Hydrogenophaga sp. H7 was heterotrophic nitrification and aerobic denitrification (HNAD) and arsenite [As(III)] oxidation bacterium. Strain H7 presented efficient capacities for simultaneous NH4+-N, NO3--N, or NO2--N removal with As(III) oxidation during aerobic cultivation. Strikingly, the bacterial ability to remove nitrogen and oxidize As(III) has remained high across a wide range of temperatures, pH values, and shaking speeds, exceeding that of the most commonly reported HNAD bacteria. Additionally, the previous HNAD strains exhibited a high denitrification efficiency, but a suboptimal concentration of nitrogen remained in the wastewater. Here, strain H7 combined with FeCl3 efficiently removed 96.14% of NH4+-N, 99.08% of NO3--N, and 94.68% of total nitrogen (TN), and it oxidized 100% of As(III), even at a low nitrogen concentration (35 mg/L). The residues in the wastewater still met the Surface Water Environmental Quality Standard of China after five continuous wastewater treatment cycles. Furthermore, genome and proteomic analyses led us to propose that the shortcut nitrification-denitrification pathway and As(III) oxidase AioBA are the key pathways that participate in simultaneous nitrogen removal and As(III) oxidation.
2022-12-09 | PXD038710 |
Project description:Synergistic effects of the common disinfectants chloroxylenol and benzethonium chloride on highly efficient heterotrophic nitrification-aerobic denitrification functional strain
| PRJNA1048310 | ENA
Project description:Screening and Identification of Heterotrophic Nitrification-Aerobic Denitrification Bacteria in the Culture Ponds of Whiteleg Shrimp
| PRJNA1270744 | ENA
Project description:Screening and Identification of Heterotrophic Nitrification-Aerobic Denitrification Bacteria in the Culture Ponds of Whiteleg Shrimp
| PRJNA1272770 | ENA
Project description:Screening and Identification of Heterotrophic Nitrification-Aerobic Denitrification Bacteria in the Culture Ponds of Whiteleg Shrimp
| PRJNA1270773 | ENA
Project description:Screening and Identification of Heterotrophic Nitrification-Aerobic Denitrification Bacteria in the Culture Ponds of Whiteleg Shrimp
| PRJNA1270847 | ENA
Project description:Screening and Identification of Heterotrophic Nitrification-Aerobic Denitrification Bacteria in the Culture Ponds of Whiteleg Shrimp