Articles tagged with Ammonia
Researchers at Oak Ridge National Laboratory have discovered a new type of catalytic reaction that generates ammonia from nitrogen and water using an electric field and nanoscale carbon spikes. The process occurs at room temperature and could lead to more energy-efficient and environmentally friendly methods for fertilizer production.
Astronomers have confirmed the presence of hydrogen sulfide in Uranus's cloud tops using sensitive spectroscopic observations. This discovery sheds light on questions about the planets' formation and history, particularly regarding the early Solar System's balance between nitrogen and sulfur.
Researchers at the University of Notre Dame are developing a renewable energy approach for synthesizing ammonia, which is essential for fertilizers and food production. The new process utilizes plasma in combination with non-noble metal catalysts to generate ammonia at milder conditions than the traditional Haber-Bosch process.
Researchers at Tokyo Institute of Technology have discovered a highly efficient ammonia synthesis catalyst that functions at low temperatures, exceeding the efficiency of conventional ruthenium and iron catalysts. The catalyst's unique structure expands surface area to improve performance.
Breast cancer cells recycle ammonia, a waste byproduct of cell metabolism, and use it as a source of nitrogen to fuel tumor growth. Repressing ammonia metabolism stunts tumor growth in mice.
Researchers from Georgia Institute of Technology found that elevated ammonia levels in Beijing have a relatively little impact on the acidity of pollutant particles. They suggest that sulfur dioxide and nitrogen oxide could be more significant contributors to extreme haze, which is linked to human health risks.
Researchers from Hokkaido University discovered that UV-irradiated amorphous ice exhibits liquid-like behavior at extremely low temperature ranges. The ice behaves similarly to a liquid, with a viscosity similar to that of honey or silicic magma, allowing it to facilitate the formation of organic compounds and dust accretion on planets.
The Robotic External Leak Locator (RELL) successfully located a small ammonia leak on the International Space Station, confirming its safety status and avoiding a risky spacewalk. The instrument provided precise measurements of gas amounts and types, allowing operators to isolate and repair the leak.
Researchers at the University of Edinburgh used computer simulations to predict chemical compounds in Neptune's mantle, finding ammonia hemihydrate as a likely component. The discovery sheds light on the extreme conditions and chemistry of ice giants, influencing future studies.
Researchers found that biochar can absorb nutrients from manure, reducing nutrient runoff and water pollution. Biochar also demonstrated significant reductions in ammonia emissions, a primary contributor to manure odors.
Researchers at EPFL have developed a uranium-based compound that enables nitrogen fixation to occur in ambient conditions, paving the way for more efficient catalysts and new concepts for metals beyond uranium. This breakthrough has significant implications for the production of ammonia and other nitrogen-containing compounds.
Researchers at Waseda University have developed an efficient alternative method for synthesizing ammonia at low temperature using surface proton hopping. This breakthrough could lead to on-demand ammonia production plants running on renewable energy, with potential applications in various industries and energy sources.
Researchers at Caltech have developed a new way of fixing nitrogen, inspired by how microbes do it, which could hold the potential for two major benefits: ease of production and understanding natural nitrogen fixation. The technology being developed is simpler and more efficient than previous methods, making it possible to study fixati...
Researchers at the University of Illinois developed a sensor that detects ammonia in breath, a sign of kidney failure. The device is sensitive enough to detect low levels, making it suitable for portable, disposable use.
A new process produces hydrogen at room temperature without external heat, utilizing adsorption on a RuO2/Al2O3 catalyst to initiate reaction. This enables repeated production of H2 even without external heat supply, contributing to efficient carbon-free energy production.
Researchers have discovered a key protein involved in photorespiration, a process that wastes energy and fixed carbon in plants. The Bile Acid Sodium Symporter 6 (BASS6) protein could be manipulated to increase plant productivity by reducing losses from this process.
A global study found steadily increasing ammonia concentrations from 2002 to 2016 over four major agricultural regions. The increases are broadly tied to crop fertilizers, livestock animal wastes, changes to atmospheric chemistry, and warming soils.
Researchers found that non-toxic amounts of ammonia increase the production of heme oxygenase-1 (HO-1), which protects endothelial cells and prevents plaque buildup. Glutamine, an amino acid supplement, triggers this natural response.
Researchers have created a novel method to produce ammonia at room temperature, utilizing enzymes derived from nature, which also generates a small electrical current. This process could potentially lead to a less energy-intensive source of ammonia used worldwide as a vital fertilizer.
Researchers detected high concentrations of ammonia in the upper troposphere over the Asian monsoon, suggesting a significant role in aerosol formation and potential cooling effect on the atmosphere. The findings provide new insights into the vertical distribution of atmospheric ammonia.
Elena Long's research aims to study the structure of nuclei by exploring how six quarks give rise to a binding force. She plans to use a new target made of deuterated ammonia to apply strong magnetic fields and measure polarization, gaining insight into matter's underlying structure.
Researchers from Colorado State University found that seabird guano emissions influence Arctic cloud properties and climate cooling. The study revealed a link between ammonia-rich bird poop and the formation of atmospheric aerosol particles, which can reflect sunlight back to space.
Researchers at ORNL discovered using high pressures to initiate chemical reactions, opening a new pathway for synthesizing novel materials. This process may also help explain the formation of complex carbon structures observed in interstellar space.
A study on Nitrososphaera viennensis reveals that specific genes and adaptations enable terrestrial archaeal ammonia oxidizers to thrive. The research provides insights into the energy metabolism of Archaea and its implications for agricultural soils and potential medical applications.
The study calculates the production of aerosol particles in all Earth regions and at different heights, revealing key findings about particle formation and its role in climate. It also determines the influence of cosmic radiation and human activity on cloud condensation nuclei.
Researchers discovered that sharks absorb toxic ammonia through their gills and convert it into non-toxic urea. This process helps maintain the fish's moisture levels in salty seawater.
Researchers have developed a highly active and stable catalyst for ammonia synthesis under low reaction temperatures. The flat-shaped Ru nanoparticles anchored on Ca(NH2)2 exhibit high catalytic performance and long-term stability.
A new study suggests that implementing techniques such as floor scraping, flushing with water, and using different types of flooring can reduce ammonia emissions from commercial dairy cattle barns by up to 50%. This reduction in pollution could have positive impacts on both the environment and human health.
Bacterial nitrogenase produces ammonia by combining atmospheric nitrogen with protons and electrons, moving one electron at a time between symmetrical halves. The enzyme's two-stage engine works efficiently through complex communication between the two halves.
A team of researchers from Utah State University and other institutions found that the two symmetrical halves of nitrogenase work together to regulate electron movements. This cooperative effort allows for more efficient conversion of nitrogen into ammonia, a crucial process for food production and energy development.
A recent study analyzed data from 25 previous studies to identify factors influencing ammonia emissions in dairy barns. Researchers found that reducing crude protein in a dairy cow's diet can significantly lower nitrogen excretion, resulting in reduced ammonia emissions. The study provides key information for farmers and farm advisers ...
Astronomers have produced the most detailed radio map yet of Jupiter's atmosphere, revealing massive movement of ammonia gas that underlies colorful bands and whirling clouds. The study sheds light on global circulation and cloud formation driven by Jupiter's internal heat source.
New observations reveal a widespread view of activity below Jupiter's clouds, including hot spots and dry regions devoid of clouds and condensable gases. The detected ammonia plumes swell up in wave patterns, suggesting motion deep within the atmosphere.
New research from Colorado State University finds that agricultural ammonia emissions now surpass fossil fuel combustion emissions as the dominant source of nitrogen cycle disturbance. Excess nitrogen in the atmosphere causes environmental impacts such as soil acidification and decreased biodiversity.
Algae farming is sensitive to fertilizer costs, with ammonia and carbon dioxide being major concerns. Approaches like increasing surface area, partial pressure, and contact time can improve nutrient utilization efficiency for CO2. Dosing ammonia at a controlled rate can minimize its volatility and toxicity.
Scientists at NREL have developed a new process using light to reduce dinitrogen into ammonia, with rates of production similar to those of the ATP-dependent reaction. This method reduces energy requirements and emits no carbon dioxide, offering a more sustainable alternative to current industrial processes.
Scientists at NREL developed a new, light-driven chemical process to produce ammonia, the main ingredient of fertilizer. The research uses nanocrystals to harness light energy, which then energizes electrons to trigger nitrogen transformation.
Researchers at Utah State University and other institutions have developed a light-driven process for nitrogen fixation, which could revolutionize agriculture and reduce the world's dependence on fossil fuels. The new process uses nanomaterials to capture light energy, making it more energy-efficient than traditional methods.
Researchers found that despite declining sulfur emissions, the acidity of sulfate particles remains unchanged in the Southeast US. The neutralizing ammonia emitted from agriculture and other sources forms an equilibrium with sulfates, reducing its ability to neutralize their acidity.
A research team led by Hong Li at the University of Delaware has found that adding alum to poultry litter can significantly reduce ammonia and greenhouse gas concentrations. This innovation helps control nutrient emissions, conserves energy, and improves animal welfare, making agriculture more sustainable.
Researchers identify a new type of bacteria, Nitrospira, capable of converting ammonia to nitrate through comammox process, revealing a long-sought organism in the nitrogen cycle. This discovery opens up new avenues for understanding the environment and wastewater treatment.
Scientists at the University of Delaware have discovered a novel structure for bimetallic catalysts, which offer improved performance and ease of synthesis. The 'patched' surface exhibits dual active sites, enabling more efficient chemical reactions.
A team of scientists used X-ray spectroscopy to analyze the interactions between active metals and gas molecules in catalytic converters. They found that different materials exhibit unique reaction paths, which can help improve their efficiency and reduce pollutant emissions.
A study engineered a gut microbiome with low urease expression to alleviate hyperammonemia symptoms in mice. This approach reduced circulating ammonia levels and improved mortality rates in animals with liver disease.
Northwestern University scientists have developed a catalyst that can convert nitrogen to ammonia under natural conditions, mimicking the process found in nature.
Researchers at Penn State have developed a thermally regenerative ammonia-based battery that converts low-grade waste heat into electricity with high efficiency. The battery can produce up to 60 watts per square meter of power, making it six to 10 times more efficient than other liquid-based thermal-electric energy conversion systems.
Researchers found that migrating animals release ammonia, which plays a significant role in shaping marine chemistry, particularly in low-oxygen zones. The study reveals that animal behavior on a large scale influences the ocean's chemistry, with implications for predicting ocean changes under climate change.
Research clarifies that ammonia emissions from agricultural exports have a substantial impact on air quality, with the study estimating an annual health cost of $36 billion. The findings suggest that reducing ammonia emissions could lead to significant societal benefits, particularly in the Northeast and Great Lakes region.
Researchers from North Carolina State University have successfully grown vertically aligned carbon nanofibers using ambient air without toxic ammonia. This breakthrough enables the mass production of these nanofibers, which hold promise for various applications, including gene delivery tools, sensors, and batteries.
The study found that Glycerol phenylbutyrate significantly reduced hepatic encephalopathy events, hospitalizations, and ammonia levels compared to placebo. GPB's direct ammonia-lowering agent properties suggest its therapeutic potential for patients with cirrhosis and hepatic encephalopathy.
A study published in Nature Medicine suggests a potential new treatment for seizures caused by high levels of ammonia in the blood. Bumetanide, a diuretic drug used to treat high blood pressure, has been found to restore normal electrical activity in the brains of mice with genetic metabolic disorders and prevent seizures.
Researchers find that US national parks are experiencing 'accidental fertilization' at or above critical thresholds due to nitrogen compounds carried on the wind. The team predicts significant increases in agricultural land and fertilizer use by 2050, requiring a 55% reduction of anthropogenic NH3 emissions.
Researchers at the University of Wisconsin-Madison have developed a diamond catalyst that efficiently converts nitrogen to ammonia under ambient conditions. The new technique, which uses synthetic industrial diamond, reduces energy consumption by up to 2% compared to traditional methods.
Researchers at Indiana University found that titanium dioxide coatings, used in air-pollution-removal technology, convert abundant ammonia to nitrogen oxide, increasing harmful ozone pollution. The study's findings call into question the effectiveness of this technology in reducing pollution.
Physicians at Alberta Children's Hospital successfully completed the world's first liver cell transplant on a Canadian baby with Urea Cycle Disorder, improving ammonia levels and buying time for a potential liver transplant. The procedure was performed as part of a research trial sponsored by Cytonet LLC.
USDA researchers have developed a method to capture and recycle ammonia from livestock waste, reducing harmful emissions and concentrating nitrogen for fertilizer. The system uses gas-permeable membranes, achieving an average removal rate of 45-153 mg/liter per day.
Researchers at Harvard University found that certain atmospheric particles can resist chemical aging in a jelly-like phase, challenging current climate models. This discovery may impact the formation of clouds and light absorption.
Researchers at Georgia Tech discovered the importance of a hydrogen bonding water network in photosystem II, a critical step in photosynthesis. The study suggests that mimicking this process could provide new supplies of oxygen and hydrogen as a by-product of electricity production.
Researchers found that induced hyperammonaemia significantly increases daytime sleepiness in patients with cirrhosis. Higher blood ammonia levels reduce the ability of cirrhotic patients to produce restorative sleep. This study suggests that reducing daytime sleepiness may result in improved sleep at night.
A new logistics model for biofuel raw materials is proposed by MSU researchers, utilizing regional biomass processing depots to process feedstocks before shipping to refineries. This approach aims to reduce transportation costs and distances, while providing economic benefits to farmers who own part of the depots.