Biological Nitrogen Removal Database

Acinetobacter sp. SYF26

• Phylum : Proteobacteria
• Class : Gammaproteobacteria
• Order :Pseudomonadales
• Family : Moraxellaceae
• Genus : Acinetobacter

NO₃^-,NO₂^-

Various compounds

Reference:Su et al., 2015

Title:Heterotrophic Nitrification and Aerobic Denitrification at Low Nutrient Conditions by a Newly Isolated Bacterium, Acinetobacter Sp. SYF26

Pubmed ID:25667009

Pubmed link:Link

Full research link:Link

Abstract: A new strain, named SYF26, was isolated from the Hei He oligotrophic drinking-water reservoir in China. Based on its phenotypic and phylogenetic characteristics, the isolate was identified as a species of genus Acinetobacter. Strain SYF26 was able to grow at low NH4+-N concentrations (5.46 mg l−1), and the nitrification rate was 0.064 mg NH4+-N l−1 h−1. Low accumulation of nitrate and nitrite was observed throughout the ammonium removal experiment. Strain SYF26 reduced NO3−-N or NO2−-N. Nitrite reductase and periplasmic nitrate reductase were detectable. The putative nitrogen removal process carried out by the strain SYF26 is as follows: NH4+→NH2OH→NO2−→NO3−, then NO3−→NO2−→N2. Response surface methodology analysis demonstrated that the maximum removal of ammonium occurred under the following conditions: NH4+-N concentration of 22.05 mg l−1, C/N ratio of 4.31, initial pH of 7.78 and temperature of 29.73 °C, where initial pH and temperature had the largest influence on ammonium removal.