Ammonia Reduction
Ammonia Reduction - Related Videos
08:14
Ammonia Synthesis at Low Pressure
0 Views •
Cited by 17 •
2017
Ammonia can be synthesized at low pressure by using a conventional catalyst and an ammonia selective absorbent.
02:10
Reduction of Alkynes to trans-Alkenes: Sodium in Liquid Ammonia
0 Views •
2023
Alkynes can be reduced to trans-alkenes using sodium or lithium in liquid ammonia. The reaction, known as dissolving metal reduction, proceeds with an anti addition of hydrogen across the carbon–carbon triple bond to form the trans product. Since ammonia exists as a gas (bp = −33°C) at room temperature, the reaction is carried out at low temperatures using a mixture of dry ice (sublimes at −78°C) and acetone. When dissolved in liquid ammonia, an alkali metal, such as sodium, dissociates into a...
06:27
Fast and Accurate Exhaled Breath Ammonia Measurement
0 Views •
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.
03:11
Oxidation-Reduction Reactions
0 Views •
2020
Oxidation–Reduction Reactions Earth’s atmosphere contains about 20% molecular oxygen, O2, a chemically reactive gas that plays an essential role in the metabolism of aerobic organisms and in many environmental processes that shape the world. The term oxidation was originally used to describe chemical reactions involving O2, but its meaning has evolved to refer to a broad and important reaction class known as oxidation–reduction (redox) reactions. Some redox reactions involve the transfer of...
12:05
Preparation of Hydrophobic Metal-Organic Frameworks via Plasma Enhanced Chemical Vapor Deposition of Perfluoroalkanes for the Removal of Ammonia
0 Views •
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.
FAQs
Acid-base absorption reduces ammonia by exploiting its nitrogen chemistry and the way ammonia partitions between surrounding phases. In an air, water, soil, or waste-stream system, treatment conditions determine how effectively ammonia is drawn into an absorbing phase and retained there. This approach is useful when the goal is to lower dissolved or airborne concentrations while limiting odor and toxicity.
Adsorption uses reactive materials to capture ammonia at a material surface rather than relying on biological conversion or oxidation. Its performance depends on contact between the ammonia-containing stream and the selected material, as well as the chemical conditions governing the interaction. This makes adsorption a distinct option for treating waste streams when capture is preferred over conversion to nitrogen-containing products.
They use different conversion pathways. Biological nitrification relies on biological activity to transform ammonia within a treatment system, whereas catalytic oxidation uses a catalyst-assisted chemical pathway. The distinction matters because the selected approach changes the chemistry of the treatment and the form of the resulting nitrogen-containing products. Comparing these pathways helps match a reduction strategy to the desired environmental outcome.
Volatility affects how readily ammonia moves into air, while solubility influences its behavior in water and the ease with which treatment can contact it there. These properties help explain why the same reduction strategy may perform differently across air, water, soil, and industrial waste streams. Chemistry-based evaluation therefore supports appropriate condition selection and interpretation of concentration changes.
Researchers can begin by identifying whether ammonia is present in air, water, soil, or an industrial waste stream, then consider volatility, solubility, and nitrogen chemistry. They can select absorption, adsorption, biological nitrification, or catalytic oxidation accordingly, and evaluate the resulting ammonia concentration. Interpreting changes alongside toxicity, odor, and pollution goals helps assess whether the chosen strategy is effective.
Applications include wastewater treatment, fertilizer and livestock management, emissions control, and pollution monitoring. In chemistry, these settings illustrate how acid-base behavior, adsorption, biological nitrogen transformation, and oxidation connect concentration control with nitrogen cycling and environmental quality. The measured outcome is not only lower ammonia, but also evidence about changes in toxicity, odor, or broader pollution conditions.