Topic
Ammonia
About: Ammonia is a research topic. Over the lifetime, 16217 publications have been published within this topic receiving 271940 citations. The topic is also known as: NH3 & azane.
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TL;DR: In this article, a mechanism for ammonia oxidation to nitrogen is proposed wherein part of the ammonia fed to the catalyst is converted into nitric oxide, and a pool of monoatomic surface nitrogen species of varying oxidation states is established.
112 citations
TL;DR: In this article, the effects of temperature, pH, and dissolved solids content on thermal stripping of ammonia were investigated in batch experiments and statistically insignificant differences were found in ammonium sulfate formation and liquid mass transfer of ammonia between the experiments with initial feed pH values of 11 and 9.
112 citations
TL;DR: The results indicate that both feeding and ammonia exposure increased plasma ammonia significantly 6 h postprandial and post ammonia exposure, the first report showing that rainbow trout can detoxify endogenous and exogenous ammonia.
Abstract: Many species of fishes have evolved mechanisms for coping with ammonia caused by either high ammonia environments or an inability to excrete nitrogenous wastes. Rainbow trout ( Oncorhynchus mykiss ), have not been known to have such a mechanism. The present study investigated whether rainbow trout can use amino acid synthesis and storage to cope with ammonia. Experiments were performed on fed and unfed rainbow trout under both control and elevated ammonia conditions (0 and 10 mg N/l (total ammonia nitrogen), pH 7.2). The results indicate that both feeding and ammonia exposure increased plasma ammonia significantly 6 h postprandial and post ammonia exposure. After 48 h the fed/ammonia exposed fish had plasma ammonia levels that were not significantly different than the fed/control fish. Plasma ammonia was reduced by more than 50%, attributable to ammonia being converted to glutamine in brain, liver and muscle tissue. Feeding alone also increased glutamine levels in brain tissue. Activity of glutamine synthetase in brain and liver was increased corresponding to an increase in glutamine concentrations when fish were exposed to ammonia. This is the first report showing that rainbow trout can detoxify endogenous and exogenous ammonia.
111 citations
TL;DR: In this article, the authors proposed a novel ammonia synthesis method from water vapor and nitrogen gas under atmospheric pressure at lower temperature than the Haber-Bosch process, where water vapor reacts with nitride ions (N3−) to form ammonia and oxide ions in molten salts.
111 citations
TL;DR: In this paper, the capability of Chlorella vulgaris to remove nitrogen in the form of ammonia and/or ammonium ions from wastewater effluent in a local wastewater treatment plant (i.e., the Mill Creek Plant in Cincinnati, Ohio, U.S.A.) was studied.
111 citations