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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 35 for “"Ammonia production"”.
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Electrochemical Pathways to Decarbonizing Urea and Ammonia Production
… them. This thesis focuses on decarbonizing the production of ammonia, a chemical indispensable to global food security, yet responsible for a substantial share of global CO₂ emissions due to its synthesis via the highly energy-intensive Haber-Bosch process. Ammonia is traditionally synthesized …
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Small-scale and flexible green ammonia production technology
Ammonia has been responsible for feeding population growth in the 20th century through synthetic fertilizer, and is poised to become the preferred energy storage medium for a society powered by renewable electricity in the 21st century. However, conventional brown ammonia production through the …
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Investigation of novel ammonia production options using photoelectrochemical hydrogen
Hydrogen and ammonia are two of the most significant clean fuels, energy carriers and storage media in the near future. Production of these chemicals are desired to be environmentally friendly. Renewable energy, in particular solar energy-based hydrogen and ammonia production technologies bring …
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Techno-economic analysis of green ammonia production using offshore wind farms
… from fossil fuels with green hydrogen in ammonia production and replacing fossil fuels in the transportation sector with this green ammonia. The analysis of the current work evaluated a total of 8 different scenarios of production, location and transport of green ammonia, considering a …
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Life Cycle Assessment of Various Nuclear-Based Hydrogen and Ammonia Production Methods
… assessment (LCA) of nuclear-based hydrogen and ammonia production is performed. Environmental impacts of nuclear hydrogen and ammonia production processes are assessed in five different impact categories selected from CML-2001 method. In one scenario BWR-HTE nuclear hydrogen production is …
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Integrated Model of a Floating Nuclear System for Hydrogen and Ammonia Production
… carbon emissions in critical sectors. Similarly, ammonia is stepping into the spotlight as both a substitute for conventional fuels in heavy industries and as an efficient hydrogen carrier. Nuclear Power Plants (NPPs) play a critical role in this scenario, offering a steady supply of low-carbon …
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Development and investigation of an ammonia synthesis reactor
Ammonia production has gained increasing attention in the last decade due to its importance as a feedstock and an energy carrier. In the present thesis study, two novel ammonia production systems are presented. The first experimental system is a lab scale electromagnetic induced ammonia synthesis …
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Innovative energy systems and processes based on hydrogen from RES and its derivatives in the energy transition process
… the integration of green hydrogen and ammonia production in renewable energy-powered energy systems, as a decarbonization pathway in the energy sector. Climate change mitigation and the transition to carbon-free energy systems are challenged by the inherent intermittency of renewable …
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Role of Hydrogen in Industrial Decarbonization: A Case for Ammonia Industry in the United States
Ammonia production contributes more than 1% of the global greenhouse gas emissions (GHG) while being used to serve a majority of the demand for nitrogen-containing fertilizer for agricultural use. While the predominant route for ammonia production today relies on natural gas as a source of energy …
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Development of a lithium-mediated nitrogen reduction process
Ammonia is an important industrial chemical that is used predominantly for producing nitrogen-containing fertilizers as well as nitric acid, polymers, and pharmaceuticals. It is also being considered as an energy-dense, carbon-free energy carrier. Today, ammonia (NH₃) is produced via the …
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Purification of Ammonia by Pressure Swing Adsorption
<p>Ammonia has long been an essential raw material for manufacture of chemical compounds of vital importance. Recent DOE-EERE-ITP Chemicals Subprogram studies have consistently ranked ethylene and ammonia as the top two most energy intensive processes. Ammonia production consumes a total energy of …
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Mechanistic Study of Fouling and Regeneration of Palladium-Based Bimetallic Catalysts Used for the Removal of Pollutants From Drinking Water
… that the main products of nitrate reduction were ammonia and nitrogen, and the distribution was sensitive to solution conditions. Increases in solution pH, H2, and sulfide concentrations resulted in increases in ammonia production. Regeneration of the sulfide-fouled catalyst bed was able to …
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IN VITRO AND OMICS METHODOLOGIES APPLIED TO ANIMAL NUTRITION TO ADDRESS FEED-FOOD COMPETITION AND GREENHOUSE GAS EMISSIONS
… and sustainability of agriculture and livestock production. Meanwhile, the use of food-competing feedstuffs and the greenhouse gas emissions from livestock are two major issues that challenge the global feed and food supply chain. Here, we applied several in vitro and omics methodologies to …
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Evaluation of Solubilization with Thermal Hydrolysis Process of Municipal Biosolids
… times between 10 and 60 min. Anaerobic biogas production by thermally pre-treated sludge was carried out through a mesophilic anaerobic digester. The results showed that solids solubilization increased with increases in temperature and time, while temperatures above 160℃ for 30 min strongly …
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The Effect of Insulin on the Nitrogen Metabolism of Teleost Fishes
… identifiable in all goldfish islets. Ammonia production by goldfish was increased markedly after the administration of insulin and tolbutamide to the ambient water at 23°C. In addition, the amino-acid nitrogen content of muscle treated with insulin and tolbutamide was elevated, while …
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Design and Analysis of Nonthermal Plasma Electrolytic Cells for Ammonia Synthesis
Haber-Bosch production of ammonia, a fertilizer and energy-dense alternative fuel, accounts for 1.8 % of global fossil fuel demand and 1-2 % of global CO2 emissions. Nonthermal plasma-assisted ammonia synthesis is one solution that is able to counter these carbon emissions. The technology has been …
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The Role of Gut Microbiota Urease in the Host With Liver Disease
… host-derived urea into carbon dioxide and ammonia. Colonic ammonia can subsequently be absorbed by the host or utilized by the gut microbiota for additional nitrogen metabolism. In patients with liver disease such as cirrhosis and congenital urea cycle disorders, hepatic abnormalities …
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Sustainable atmospheric ammonia synthesis and nitrogen fixation using non-thermal plasma (NTP)
Ammonia has recently been intensively studied as a clean, sustainable fuel source and an efficient energy storage medium due to its effectiveness as a hydrogen carrier molecule. However, the current method of ammonia synthesis, known as the Haber-Bosch process, requires a large fossil fuel input, …
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Biohydrogen production in Escherichia coli – a synthetic biology approach
… hydrogenation of fats and oils, methanol production, and ammonia production – an essential component of agricultural fertilizers.<br/>Biohydrogen (Bio-H2) is molecular hydrogen produced by microorganisms and is an exciting prospect as a fully renewable, commercially-viable …
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The Window of Opportunity in Sustainability Transitions: An empirical investigation
… to transition the United States system of ammonia production and usage to electrochemical technology powered by wind. The analysis identified novel insights, firstly showing that actors took action based on a durable set of circumstances to exploit an opportunity for gain, defined by value …
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