Characterisation of heterotrophic nitrifying and aerobic denitrifying Klebsiella pneumoniae CF-S9 strain for bioremediation of wastewater

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

“…During the cultivation, a slight increase of nitrite and nitrate were observed in the initial period, but their concentrations started to decline gradually after the complete removal of ammonium. This phenomenon differed from other strains, whereby nitrification and denitrification simultaneously occurred in P. versutus LYM(Shi et al, 2013) and K. pneumoniae CF-S9 strain(Padhi et al, 2013). The preferential removal of ammonium in the mixed N-source by strain YB might be due to the higher enzyme activity of ammonium oxidization than the reduction of nitrite and nitrate.3.3.…”

“…The HAO gene was regarded as marker genes in ammonium oxidation, which oxidized hydroxylamine to nitrite, respectively. Primers haoF1/haoR3 were used for hao gene amplification, conducted as previously described (Padhi et al, 2013). The napA gene encoding periplasmic NR, which reduces nitrate to nitrite under aerobic conditions and nirK or nirS gene encoding NiR, which reduces nitrite to nitric oxide were amplified to confirm the aerobic denitrification.…”

Removal of High-Strength of Ammonium and Phenol from Coking Wastewater by Alcaligenes faecalis No.4

“…When high-strength ammonium is involved in CW, COD in the wastewater is not sufficient to complete the removal of ammonium [1][2][3][4][5]. Recently, many bacteria have been known to be capable of heterotrophic nitrification and aerobic denitrification [6][7][8][9][10][11][12][13][14]. The use of these bacteria provides advantages over the conventional nitrogen removal process of aerobic nitrification and an anaerobic denitrification because ammonium removal is achieved in one reactor using one type of bacteria under aerobic conditions.…”

Culture-Independent Analysis of Bacterial Diversity during Bioremediation of Soil Contaminated with a Diesel-Biodiesel Blend (B10)S

“…They may be involved in the fixation of atmospheric N [32,33] or denitrification [34,35] and are often isolated from the soil rhizosphere [36]. Soil bacteria often have an inherent capacity for degradation of recalcitrant organic compounds [9,10,37].…”