Results 31 to 40 of about 1,479 (179)
Comparative enrichment of complete ammonium oxidation bacteria in floccular sludge reactors: Sequencing batch reactor vs. continuous stirred tank reactor [PDF]
Water Research XThis study attempted to compare the enrichment of complete ammonium oxidation (comammox) bacteria, which are affiliated with Nitrospira and not able to generate nitrous oxide (N2O, a potent greenhouse gas) through biological pathways, in two commonly ...
Ying Zhu +6 more
doaj +2 more sources
Monitoring complete ammonia oxidizers bacteria: relevant players for nitrogen removal from wastewater [PDF]
AMB ExpressCOMAMMOX (Complete Ammonia Oxidizers) bacteria seem to play an important role in nitrification, being able to directly transform ammonia into nitrates. Due to the relevance of this process in WWTPs, different approaches were used in this work to monitor ...
Javier Duque +6 more
doaj +2 more sources
Complete nitrification: insights into the ecophysiology of comammox Nitrospira. [PDF]
Appl Microbiol Biotechnol, 2019 Nitrification, the oxidation of ammonia via nitrite to nitrate, has been considered to be a stepwise process mediated by two distinct functional groups of microorganisms. The identification of complete nitrifying Nitrospira challenged not only the paradigm of labor division in nitrification, it also raises fundamental questions regarding the ...
Koch H, van Kessel MAHJ, Lücker S.
europepmc +6 more sources
Comammox Nitrospira within the Yangtze River continuum: community, biogeography, and ecological drivers. [PDF]
ISME J, 2020 Abstract The recent discovery of comammox Nitrospira as complete nitrifiers has fundamentally renewed perceptions of nitrogen cycling in natural and engineered systems, yet little is known about the environmental controls on these newly recognized bacteria.
Liu S +7 more
europepmc +4 more sources
Comammox Nitrospira among dominant ammonia oxidizers within aquarium biofilter microbial communities. [PDF]
Appl Environ MicrobiolABSTRACT Nitrification by aquarium biofilters transforms ammonia waste (NH 3 /NH 4 + ) to less toxic nitrate (NO 3 - ) via nitrite (NO 2 - ).
McKnight MM, Neufeld JD.
europepmc +3 more sources
Temporal enrichment of comammox Nitrospira and Ca. Nitrosocosmicus in a coastal plastisphere. [PDF]
ISME JAbstract Plastic marine debris is known to harbor a unique microbiome (termed the “plastisphere”) that can be important in marine biogeochemical cycles. However, the temporal dynamics in the plastisphere and their implications for marine biogeochemistry remain poorly understood.
Yang Q +11 more
europepmc +3 more sources
Frontiers in Microbiology, 2021 The discovery of ammonia-oxidizing archaea (AOA) and complete ammonia-oxidizing (comammox) bacteria widespread in terrestrial ecosystems indicates an important role of these organisms in terrestrial nitrification.
Jonathan Rodriguez +6 more
doaj +1 more source
Dramatic loss of comammox Nitrospira associated with long-term nitrite feeding [PDF]
, 2017 Until recently, nitrification was thought to be a strict two-step process where ammonia was first oxidized to nitrite by ammonia-oxidizing bacteria and/or archaea, and subsequently to nitrate by nitrite oxidizing bacteria (NOB). Recent studies in NOB metabolism, however, have revealed that certain Nitrospira are capable of performing both steps ...
Dechesne, Arnaud +3 more
core +2 more sources
Life, 2022 Complete ammonia oxidizers (comammox), which directly oxidize ammonia to nitrate, were recently identified and found to be ubiquitous in artificial systems.
Sheng-Nan Zhang +4 more
doaj +1 more source
Frontiers in Marine Science, 2023 Nitrate is mainly converted via aerobic nitrite oxidation during the second step of nitrification, which is catalyzed by nitrite-oxidizing bacteria (NOB) and the recently discovery complete ammonia oxidizers (comammox).
Qiang Zhao +8 more
doaj +1 more source