Results 11 to 20 of about 77,524 (304)
Journal of Industrial Microbiology & Biotechnology, 2008 For biological nitrification, a set of experiments were carried out to approximate the response of lag period along with ammonia oxidation rate with respect to different concentrations of cyanide (CN-) and ammonia-oxidizing bacteria (AOB), and temperature variation in laboratory-scale batch reactors.
Do, H +5 more
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Frontiers 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
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Combustion Science and Technology, 2019 The selective non-catalytic reduction of NO by ammonia (SNCR) has been extensively studied but no activation of ammonia oxidation by nitric oxide had been reported. Experiments performed in a jet-stirred reactor (JSR) at atmospheric pressure for various equivalence ratios (0.1–2) and initial concentrations of NH3 (500 to 1000 ppm) and NO (0 to 1000 ppm)
Dagaut, Philippe
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The oxidation of ammonia by copper [PDF]
Surface Science, 1993 We present local spin density approximation calculations on the adsorption and dissociation of ammonia n a copper cluster which models the Cu(111) surface. Preadsorbed oxygen increases the adsorption energy of ammonia, and promotes the dissociation of ammonia. All examined dissociation reactions in the absence of oxygen are endothermic. Dissociation of
Biemolt, W. +4 more
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Catalyst for Ammonia Oxidation [PDF]
, 2015 The present invention relates to a bimetallic catalyst for ammonia oxidation, a method for producing a bimetallic catalyst for ammonia oxidation and a method for tuning the catalytic activity of a transition metal. By depositing an overlayer of less catalytic active metal onto a more catalytic active metal, the total catalytic activity is enhanced.
Conradsen, Christian Nagstrup +3 more
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Nitrification of archaeal ammonia oxidizers in a high- temperature hot spring [PDF]
Biogeosciences, 2016 The oxidation of ammonia by microbes has been shown to occur in diverse natural environments. However, the link of in situ nitrification activity to taxonomic identities of ammonia oxidizers in high-temperature environments remains poorly understood ...
S. Chen, X. Peng, H. Xu, K. Ta
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Chemical and Electrocatalytic Ammonia Oxidation by Ferrocenium
, 2023 Recognizing the potential of ammonia to serve as a carbon-free fuel, we describe an electrocatalytic system for the oxidation of ammonia based on ferrocene (Cp2Fe), an inexpensive, robust catalyst utilizing Earth-abundant iron.
Mahdi, Raghibi Boroujeni +4 more
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Catalytic ammonia oxidation to nitrogen (I) oxide [PDF]
Austrian 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
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Aerobic metabolism of mixed culture of ammonia oxidation
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
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Trace element requirements for stable food waste digestion at elevated ammonia concentrations [PDF]
, 2012 The work investigated why anaerobic digesters treating food waste and operating at high ammonia concentrations suffer from propionic acid accumulation which may result in process failure.
Banks, Charles +8 more
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