The characteristics of a novel heterotrophic nitrifying and aerobic denitrifying bacterium, Acinetobacter junii YB

Nitrogen removal characteristics of a heterotrophic nitrifier Acinetobacter junii YB and its potential application for the treatment of high-strength nitrogenous wastewater

“…Previously, a heterotrophic nitrifier strain Acinetobacter junii YB was isolated from activated sludge (Ren et al, 2014). This strain exhibited remarkable abilities to heterotrophic nitrification-aerobic denitrification and cell aggregation under aerobic conditions.…”

“…However, this process tends to be time-consuming and cost-intensive due to the low rate of nitrification and the complexity of separating aerobic and anoxic tanks. To cope with these problems, various novel nitrogen removal processes have been studied for enhancing the Ren et al, 2014). These special heterotrophic bacteria exhibit higher growth rates than autotrophs, and can use organic substrates as sources of carbon and energy for denitrification (Zhao et al, 2010(Zhao et al, , 2012.…”

Bacterial community structure and removal performances in IFAS-MBRs: A pilot plant case study

“…Moreover, the isolates related to B. toyonensis could exhibit flocculating activity (Okaiyeto et al, 2015). All strains isolated from aerobic tank are wastewater bacteria known for exhibiting efficient heterotrophic nitrificationeaerobic denitrification ability at a wide range of ammonium loads and producing biofilm (Di Bonaventura et al, 2004;Wang et al, 2010;Chen et al, 2012;Ren et al, 2014).…”

Draft Genome Sequence of Acinetobacter Y1, a Heterotrophic Nitrifying and Aerobic Denitrifying Bacterium Isolated from Coke Plant Wastewater

“…Only a few strains of the family have been reported to be able to metabolize a diverse range of compounds [4][5][6][7]. In recent years, some isolates within the genus proved to be heterotrophic nitrifier, such as Acinetobacter junii YB [8], Acinetobacter calcoaceticus HNR [9], Acinetobacter sp. HA2 [10], Acinetobacter sp.…”

“…Heterotrophic nitrification-aerobic denitrification has attracted increasing attention because it possesses the merit that traditional nitrogen removal process can't compare with. The two possible pathway of nitrogen metabolism was suggested, one is similar to autotrophic nitrification process, in which ammonium is firstly converted to hydroxylamine, followed by hydroxylamine oxidation to nitrite and/or nitrate, and then nitrification products is denitrify to nitrogenous gas [8], while the other one is denitrification via hydroxylamine rather than nitrite or nitrate [12,13]. However, it is still difficult to generalize the actual metabolic mechanisms of coupling of heterotrophic nitrification and aerobic denitrification just depending on the detection of intermediate products, end products, individual enzymes and related genes.…”