Aerobic denitrifiers isolated from an alternating activated sludge system

Microbial nitrate respiration – Genes, enzymes and environmental distribution

“…The last enzyme in the denitrification reaction chain, NOS, is oxygen sensitive in many species. Therefore, aerobic denitrification is often incomplete and an increase in N 2 O formation has been observed when conditions switch from anaerobic to aerobic (Frette et al, 1997;Patureau et al, 1994).…”

“…It has been suggested that aerobic denitrification mainly occurs in environments of alternating oxic/anoxic conditions (Frette et al, 1997;Patureau et al, 2000). Microorganisms capable of both aerobic and anaerobic denitrification would have the best chances of survival in these habitats (Gao et al, 2009;Lloyd et al, 1987).…”

The effects of selected parameters on the nitric oxide removal by biofilter

“…Typically, denitrifiers could use their own enzyme system to consume NO that could be found under anaerobic growth conditions with N-oxides as electron acceptors [18]. Furthermore, in the case of the flue gas containing NO, O 2 concentration was often around 3%-8%, which would increase the dissolution of oxygen in water, thus likely inhibiting denitrification [19].…”

Screening and denitrification characteristics of a slight halophilic heterotrophic nitrobacteria

“…The mechanism of denitrification for gs1 were similar to Thiosphaera pantotropha, which was isolated from the denitrification tank of a domestic wastewater treatment plant by Robertson [13] . Denitrification is generally considered to occur only under anaerobic condition; however, aerobic denitrobacteria can use oxygen and nitrate simultaneously as electron acceptors to implement corespiration, which makes aerobic denitrification possible [14] . anaerobic conditions; however, most heterotrophic nitrifying bacteria are capable of aerobic denitrification [15] , which makes nitrification and denitrification occur at the same time in one reactor.…”