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Heterotrophic ammonia oxidation by Alcaligenes balances ROS generation and terminal electron transport [PDF]

open access: yesmLife
Heterotrophic nitrifiers are bacteria that aerobically oxidize ammonia in the presence of organic carbon sources, which differs from autotrophic nitrifiers that extract energy from ammonia oxidation for cell metabolism and growth.
Runhua Wang   +11 more
doaj   +2 more sources

Ammonia oxidation at pH 2.5 by a new gammaproteobacterial ammonia-oxidizing bacterium. [PDF]

open access: yesISME J, 2021
Abstract Ammonia oxidation was considered impossible under highly acidic conditions, as the protonation of ammonia leads to decreased substrate availability and formation of toxic nitrogenous compounds. Recently, some studies described archaeal and bacterial ammonia oxidizers growing at pH as low as 4, while environmental studies ...
Picone N   +9 more
europepmc   +6 more sources

Robust ammonia oxidation by “Candidatus Nitrosacidococcus tergens” across a broad pH range [PDF]

open access: yesmBio
Acidophilic ammonia-oxidizing bacteria (AOB) have only recently been discovered. These organisms hold great promise for acidic wastewater treatment; however, their physiology remains poorly understood compared to that of neutrophilic AOB.
Ida F. Peterse   +5 more
doaj   +2 more sources

Ammonia-oxidizing archaea and complete ammonia-oxidizing Nitrospira in water treatment systems

open access: yesWater Research X, 2022
Nitrification, the oxidation of ammonia to nitrate via nitrite, is important for many engineered water treatment systems. The sequential steps of this respiratory process are carried out by distinct microbial guilds, including ammonia-oxidizing bacteria (
Sarah Al-Ajeel   +4 more
doaj   +3 more sources

Advances in research of Anammox process in MBR [PDF]

open access: yesE3S Web of Conferences, 2023
Membrane bioreactor (MBR) is an efficient wastewater treatment technology, which is produced by combining membrane treatment technology and biological treatment technology, and has the characteristics of stable water quality and shock load resistance ...
xinyu Zhou   +5 more
doaj   +1 more source

Research of landfill leachate treatment based on anammox [PDF]

open access: yesE3S Web of Conferences, 2021
Landfill leachate has the characteristics of high ammonia nitrogen content, high concentration of organic matter and low carbon nitrogen ratio. Traditional biological treatment technology is difficult to meet the increasingly stringent emission standards.
Wu Denghua
doaj   +1 more source

Shifts of ammonia-oxidation process along salinity gradient in an estuarine wetland

open access: yesEcological Indicators, 2022
Ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA) play an important role in nitrogen (N) cycling of the estuarine sediments. However, the shifts of potential ammonia oxidation rates (PARs) of AOA and AOB along different salinity ...
Weifang Hu   +6 more
doaj   +1 more source

Electrochemical Treatment of High Concentration Ammonia using RuO2/Ti Anode and TiO2 Nanotube Cathode

open access: yes대한환경공학회지, 2020
Objectives:In this study, the treatment potential of ammonia in wastewater generated by S company odor removal process was tested by using electrochemical reactor with RuO2/Ti anode and TiO2 nanotube cathode.
Sumin Lee, Daewon Pak
doaj   +1 more source

Selective catalytic oxidation of ammonia to nitric oxide via chemical looping

open access: yesNature Communications, 2022
This study reports a fundamentally new and commercially promising chemical looping ammonia oxidation scheme using an inexpensive transition metal oxide, and provides mechanistic insight into the oxygen species governing ammonia oxidation.
Chongyan Ruan   +8 more
doaj   +1 more source

Nitric oxide scavengers differentially inhibit ammonia oxidation in ammonia-oxidizing archaea and bacteria [PDF]

open access: yesFEMS Microbiology Letters, 2016
Differential inhibitors are important for measuring the relative contributions of microbial groups, such as ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA), to biogeochemical processes in environmental samples. In particular, 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl 3-oxide (PTIO) represents a nitric oxide scavenger used for ...
Laura A, Sauder   +2 more
openaire   +2 more sources

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