Microorganism |
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Marinobacter sp. NNA5 |
Taxonomy |
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Electron Acceptor |
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NO3- |
Electron Donor |
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Various compounds |
Information about Article |
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Reference:Liu et al., 2016 Title:Marinobacter Strain NNA5, a Newly Isolated and Highly Efficient Aerobic Denitrifier With Zero N2O Emission Pubmed ID:26836845 Pubmed link:Link Full research link:Link Abstract: An efficient aerobic denitrification bacterium, strain NNA5, was isolated and identified as Marinobacter sp. NNA5. NNA5 did not perform heterotrophic nitrification. GC/IRMS analysis revealed that 15N2 was produced from Na15NO2 and K15NO3. GC/MS and quantitative analyses showed that no N2O emission occurred when nitrite or nitrate was used as substrate. Single factor experiments indicated that optimal conditions for aerobic denitrification were: sodium succinate or sodium pyruvate as carbon source, temperature 35 °C, NaCl concentration 2–4%, C/N ratio 6–8, pH 7.5, rotation speed 150 rpm (giving dissolved oxygen concentration 6.08 mg/L), NO3−-N concentration ranging from 140 to 700 mg/L. NNA5 displayed highly efficient aerobic denitrifying ability, with maximal NO3−-N removal rate 112.8 mg/L/d. In view of its ability to perform aerobic denitrification with zero N2O emission, NNA5 has great potential for future application in aerobic denitrification processes in industrial and aquaculture wastewater treatment systems. |