Ammonia Loading
Ammonia Loading - Related Videos
08:14
Ammonia Synthesis at Low Pressure
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Cited by 17 •
2017
Ammonia can be synthesized at low pressure by using a conventional catalyst and an ammonia selective absorbent.
06:27
Fast and Accurate Exhaled Breath Ammonia Measurement
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Cited by 16 •
2014
Ammonia is an important physiologic metabolite relevant to various disease and wellness states. It is also a difficult molecule to measure in breath, which demands particular precautions be taken to obtain accurate results. Not all factors influencing ammonia are known, but progress can be difficult without accounting for these factors.
12:05
Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia
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Cited by 15 •
2013
Herein the procedures for plasma enhanced chemical vapor deposition of perfluoroalkanes on microporous materials such as metal-organic frameworks to enhance their stability and hydrophobicity are described. Furthermore, breakthrough testing of milligram quantities of samples is described in detail.
01:30
Preparation of Amines: Alkylation of Ammonia and Amines
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2025
Alkylation is one of the methods used to prepare amines. Direct alkylation of ammonia or a primary amine with an alkyl halide gives polyalkylated amines along with a quaternary ammonium salt through successive SN2 reactions. This process of making the quaternary salt through the direct alkylation method is called exhaustive alkylation. Each alkylation step makes the nitrogen center more nucleophilic, which triggers successive alkylations until a quaternary ammonium salt is formed. Considering...
09:30
Ammonia Fiber Expansion (AFEX) Pretreatment of Lignocellulosic Biomass
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Cited by 53 •
2020
Ammonia fiber expansion (AFEX) is a thermochemical pretreatment technology that can convert lignocellulosic biomass (e.g., corn stover, rice straw, and sugarcane bagasse) into a highly digestible feedstock for both biofuels and animal feed applications. Here, we describe a laboratory-scale method for conducting AFEX pretreatment on lignocellulosic biomass.
FAQs
pH and temperature influence the balance between ammonium and un-ionized ammonia in water. Because un-ionized ammonia is the toxic form identified in the source material, identical ammonia inputs may present different risks under different chemical and thermal conditions. Evaluating loading therefore requires attention not only to the amount introduced, but also to the receiving water’s pH and temperature.
Microbial nitrification transforms ammonia first into nitrite and then into nitrate. This conversion changes the chemical form of nitrogen, but it also consumes dissolved oxygen during the process. Consequently, ammonia inputs can contribute to oxygen depletion as well as nutrient pollution. Tracking nitrification helps connect ammonia loading with changing water quality and possible stress on aquatic organisms.
The source indicates where nitrogen inputs may originate and which environmental setting should be examined. Wastewater, agricultural runoff, industrial emissions, and decomposition of organic matter represent different pathways into ecosystems. Distinguishing among them helps researchers interpret monitoring results, evaluate nutrient pollution, and focus assessment or reduction strategies on the relevant input pathway.
Ammonia measurements provide more useful environmental information when considered alongside pH, temperature, and dissolved oxygen. The first two affect the proportions of ammonium and un-ionized ammonia, while nitrification can reduce oxygen availability. Together, these observations help researchers evaluate eutrophication risk, oxygen depletion, and potential harm to aquatic organisms rather than treating concentration as an isolated result.
Wastewater treatment design can use ammonia loading information to account for the quantity or rate of nitrogen entering a treatment system. Because nitrification converts ammonia to nitrite and nitrate while consuming dissolved oxygen, loading data are relevant to evaluating treatment needs and oxygen-related consequences. The resulting assessment supports decisions intended to reduce nitrogen inputs to receiving environments.
In watershed monitoring, ammonia loading provides a way to examine nitrogen inputs from sources such as runoff, wastewater, emissions, and organic decomposition. Results can be related to eutrophication risk, dissolved-oxygen depletion, and effects on aquatic organisms. This information also supports regulatory assessment by documenting environmental pressures and evaluating whether reduction strategies are addressing nitrogen pollution.
Researchers can use these data to evaluate several connected outcomes: nutrient pollution, eutrophication risk, oxygen depletion, and potential harm to aquatic organisms. Interpretation becomes stronger when loading is considered with ammonia speciation and nitrification, since pH and temperature affect toxicity while microbial conversion consumes dissolved oxygen. This makes loading assessment useful for linking nitrogen inputs with ecosystem condition.