Results 11 to 20 of about 68,582 (266)

Aerobic metabolism of mixed culture of ammonia oxidation

open access: yes浙江大学学报. 农业与生命科学版, 2000
Denitrification with ammonia as electron donor is a new microbial reaction, named anaerobic ammonia oxidation. The characteristics of mixed culture from an anaerobic ammonia oxidation reactor are compared with those of Nitrosomonas europaea and those of ...
ZHENG Ping, HU Bao-lan, XU Xiang-yang
doaj   +1 more source

Physico-chemical technologies for nitrogen removal from wastewaters: a review

open access: yesRevista Ambiente & Água, 2015
The paper examines the main physico-chemical processes for nitrogen removal from wastewaters, considering both those that have been long known and still widely applied at the industrial scale, and those that are still at the research level.
Andrea G. Capodaglio   +2 more
doaj   +1 more source

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 (AOB) and archaea (AOA), nitrite-oxidizing bacteria (NOB), and newly discovered members of the genus
Sarah Al-Ajeel   +4 more
openaire   +3 more sources

Ammonia-Oxidizing Archaea and Bacteria Differentially Contribute to Ammonia Oxidation in Sediments from Adjacent Waters of Rushan Bay, China

open access: yesFrontiers in Microbiology, 2018
Ammonia oxidation plays a significant role in the nitrogen cycle in marine sediments. Ammonia-oxidizing archaea (AOA) and bacteria (AOB) are the key contributors to ammonia oxidation, and their relative contribution to this process is one of the most ...
Hui He   +13 more
doaj   +1 more source

Study on NO formation characteristics and ammonia-nitrogen conversion behavior during ammonia-coal co-firing

open access: yes能源环境保护, 2023
Experiments were conducted on a laboratory drop tube furnace for the single-firing of ammonia and coal, as well as co-firing, combined with numerical simulations to investigate the NO formation characteristics, intermediate reaction processes and ammonia-
WANG Huakun   +4 more
doaj   +1 more source

Long-Term Effects of Trace NO2 Addition on the Performance of CANON SBR [PDF]

open access: yesE3S Web of Conferences, 2021
Two parallel CANON Sequencing Bach reactors were started, and 67ppm NO2 was added into Sequencing Bach Reactor 2 while nothing was added to Sequencing Bach Reactor 1.
Qing Cai, Jiajia Ding
doaj   +1 more source

Catalytic ammonia oxidation to nitrogen (I) oxide [PDF]

open access: yesAustrian Journal of Technical and Natural Sciences, 2015
The process of synthesis of nitrous oxide by low-temperature catalytical oxidation of NH has been investigated for organic synthesis. The investigation has been carried out by the stage separation approach with NH oxidation occurring in several reaction zones, which characterized by different catalytic conditions.
Masalitina, Nataliya Yurevna   +1 more
openaire   +3 more sources

Photoinhibition of comammox reaction in Nitrospira inopinata in a dose- and wavelength-dependent manner

open access: yesFrontiers in Microbiology, 2022
Apparent contribution of complete ammonia-oxidizing organisms (comammox) to the global nitrogen cycle highlights the necessity for understanding niche differentiation of comammox bacteria among other ammonia oxidizers. While the high affinity for ammonia
Ekaterina Y. Gottshall   +5 more
doaj   +1 more source

DNA- and RNA-SIP Reveal Nitrospira spp. as Key Drivers of Nitrification in Groundwater-Fed Biofilters

open access: yesmBio, 2019
Nitrification, the oxidative process converting ammonia to nitrite and nitrate, is driven by microbes and plays a central role in the global nitrogen cycle.
Arda Gülay   +7 more
doaj   +1 more source

Situation and prospects of treatment technologies for mine water containing ammonia nitrogen

open access: yes能源环境保护, 2023
As the discharge standards for mine water treatment become more stringent, the requirements for effective removal of ammonia nitrogen from mine water are strongly needed.
LI Fuqin*   +4 more
doaj   +1 more source

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