Anammox-mediated systems have attracted considerable attention as alternative cost-
effective technologies for sustainable nitrogen (N) removal from wastewater. This review …

Oxidation of ammonia to nitrite by bacteria and archaea is responsible for global emissions
of nitrous oxide directly and indirectly through provision of nitrite and, after further oxidation …

Despite the fact that heterotrophic nitrification was identified more than 100 years ago, the
biochemistry of heterotrophic nitrifiers is poorly known and their contribution to nitrification in …

Nitrification, the oxidation of ammonia to nitrate, is an essential process in the
biogeochemical nitrogen cycle. The first step of nitrification, ammonia oxidation, is performed …

The various forms of nitrogen (N), including ammonium (NH 4+), nitrite (NO 2−), and nitrate
(NO 3−), present in wastewaters can create critical biotic stress and can lead to hazardous …

Nitrification, the oxidation of ammonia via nitrite to nitrate, has always been considered to be
catalyzed by the concerted activity of ammonia-and nitrite-oxidizing microorganisms. Only …

Ammonia-oxidising archaea (AOA) are ubiquitous and abundant in nature and play a major
role in nitrogen cycling. AOA have been studied intensively based on the amoA gene …

Nitrification, the aerobic oxidation of ammonia to nitrate via nitrite, has been suggested to
have been a central part of the global biogeochemical nitrogen cycle since the oxygenation …

Recirculating aquaculture systems (RAS) are unique engineered ecosystems that minimize
environmental perturbation by reducing nutrient pollution discharge. RAS typically employ a …

Ammonia oxidation is a fundamental core process in the global biogeochemical nitrogen
cycle. Oxidation of ammonia (NH3) to nitrite (NO2−) is the first and rate-limiting step in …