The traditional biological nitrogen removal (BNR) follows the conventional scheme of
sequential nitrification and denitrification. In recent years, novel processes such as …

Aerobic ammonium oxidizing bacteria were first isolated more than 100 years ago and
hydroxylamine is known to be an intermediate. The enzymatic steps involving …

Nitrifier denitrification is the reduction of nitrite (NO 2−) by ammonia-oxidizing bacteria. This
process may account for up to 100% of nitrous oxide (N 2 O) emissions from ammonium (NH …

The denitrification process profoundly affects soil nitrogen (N) availability and generates its
byproduct, nitrous oxide, as a potent greenhouse gas. There are large uncertainties in …

Nitrification is the aerobic process of the nitrogen cycle that converts ammonia to nitrate and
is facilitated by ammonia-oxidizing and nitrite-oxidizing microorganisms. Ammonia-oxidizers …

Stable suppression of nitrite oxidizing bacteria (NOB) is one of the major bottlenecks for
achieving mainstream nitrite shunt or partial nitritation/anammox (PN/A). It is increasingly …

Petrochemical wastewater is a major industrial source of pollution that produces a variety of
refractory and toxic organic pollutants that are detrimental to animals and plants in natural …

Micro-aeration (dosing tract air or oxygen) is an effective method to promote hydrolysis
acidification (HA). In recent years, the pretreatment of toxic and refractory organic …

Paddy fields are one of the most important sources of nitrous oxide (N2O), but
biogeochemical N2O production mechanisms in the soil profile remain unclear. Our study …

Different biological phosphorus removal systems (BPRSs) are evaluated from economic and
environmental perspectives by employing the Taguchi optimization approach for the first …