Ammonium nitrate is an inorganic chemical that has numerous applications in
different industries. However, various problems are associated with both the
production and subsequent storage of ammonium nitrate, including caking,
degradation, unwanted phase transition, and recrystallization. Although
several methods have been developed to attempt to solve these problems, many
of them fail to work in practice. In this study, different compounds
including silicic acid and sodium silicate were added to slow the progress of
or to prevent the degradation of ammonium nitrate. Multiple instrumental
analyses such as ion chromatography and scanning electron microscopy were
used to monitor the degradation process.
With the synthesis of ammonia with chemical methods, global carbon emission is the biggest threat to global warming. However, the dependence of the agricultural industry on ammonia production brings with it various research studies in order to minimize the carbon emission that occurs with the ammonia synthesis process. In order to completely eliminate the carbon emissions from ammonia production, both the hydrogen and the energy needed for the operation of the process must be obtained from renewable sources. Thus, hydrogen can be produced commercially in a variety of ways. Many processes are discussed to accompany the Haber Bosch process in ammonia production as potential competitors. In addition to parameters such as temperature and pressure, various plasma catalysts are being studied to accelerate the ammonia production reaction. In this study, various alternative processes for the capture, storage and complete removal of carbon gas released during the current ammonia production are evaluated and the current conditions related to the applicability of these processes are discussed.In addition, it has been discussed under which conditions it is possible to produce larger capacities as needed in the processes studied in order to reduce carbon gas emissions during ammonia production in order to provide raw material source for fertilizer production and energy sector. However, if the hydrogen gas required for ammonia production is produced using a solid oxide electrolysis cell, the reduction in the energy requirement of the process and in this case the reduction of energy costs shows that it will play an important role in determining the method to be used for ammonia production. In addition, it is predicted that working at lower temperature (<400 C) and pressure (<10 bar) values in existing ammonia production technologies, despite increasing possible energy costs, will significantly reduce process operating costs.
Several research studies have been performed to minimise the hygroscopicity of ammonium nitrate for increasing its commercial value and decreasing the nitrogen content. In this study, the hygroscopicity of ammonium nitrate was reduced using silicic acid, calcium lignosulfonate, and sodium silicate in the two-stage vacuum ammonium nitrate production process. Degradation of ammonium nitrate was observed after two years of storage, which is considered a standard by the European Fertilizer Manufacturers Association.
Nickel plating processes, popularly used in Europe since 1950s, have been increasingly employed in Turkey in recent years. As a result, industrial usage has developed rapidly. Nickel plating is the preferred process for this study because of the uniformity of the plating thickness on the plated surface and the ease with which complex components can be plated. It is also resistant to corrosion and has good levels of hardness.In this experiment, the following parameters were investigated: the effect of varying the amount of nickel, the thickness of the plating, and sheen (whether shiny or dull).In this study, brightening and carrying agents have been used to determine the best operational parameters for the Kale Kilit Factory. The compositions of the brightening and carrying agents used in the experiment are included in this text. Additionally, investigations were conducted on how the plating color changed when compared to the original bath as a result of using Fe 2+ complex concentration in nickel plating baths, as a brightening agent and for analyzing the color of the plated sample, under a visible region spectrophotometer at 350 nm and 6500 kelvin light power and D65 (Average North Sky Daylight) light. In our research, the most important feature of analysis is that the desired color effect is obtained by using brightening agents containing Fe 2+ complex concentration without any interference from any colorant after nickel plating by electrolysis. In this study where nickel plating bath characteristics are researched, physical tests such as brittle test are applied to the plated materials, which provide us important ideas about the accuracy of the choices made according to standards.
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