(Press-News.org) Ammonia is emerging as a promising energy source to achieve carbon neutrality due to its inherent carbon-free nature. A recent study, led by Professor Hankwon Lim in the School of Energy and Chemical Engineering and the Graduate School of Carbon Neutrality at UNIST, has evaluated the feasibility of ammonia-based power generation through techno-economic and carbon footprint analyses. The research focuses on an integrated system combining ammonia decomposition and phosphoric acid fuel cells.
The study, conducted using a commercial process simulator, unveils significant findings regarding the efficiency and economic viability of utilizing ammonia in power generation systems. Results indicate an impressive energy efficiency rate of 46.7% within the designed power generation process.
Through comprehensive economic analysis, the research team identified an upper limit for ammonia pricing at 421.3 $ tNH3–1 that allows competitive pricing against industrial electricity rates—a crucial factor in determining market competitiveness.
To further optimize ammonia imports into the Republic of Korea (KOR), five distinct scenarios were established based on historical data from the top ten exporting countries. Using the Monte Carlo method for ammonia production costs and carbon dioxide emissions in each nation, researchers optimized import quantities while minimizing overall emissions.
The results demonstrate that if solely reliant on carbon-based ammonia imports, carbon intensity ranges between 0.707–0.736 kgCO2-eq kWh−1—exceeding KOR’s average value over a 20-year period. However, achieving a ratio of over 78% of carbon-neutral ammonia (Scenario 4) can make both environmental and economic aspects more favorable.
According to the research team, their findings provide valuable insights into optimizing ammonia exports and reducing carbon intensity. By adopting a holistic approach that encompasses all stages of the supply chain, significant progress can be made towards sustainable energy solutions.
“Our study sheds light on the immense potential of ammonia as an energy source,” said Professor Lim. “We have analyzed costs and greenhouse gas emissions while considering different commercialized methods of producing ammonia. Although renewable energy sources were not part of this particular study, our findings offer crucial insights into enhancing ammonia exports and promoting sustainability.”
The study findings have been published ahead of their official publication in the online version of Chem. Eng. J. on May 13, 2023. This work has been supported by the National Research Foundation of Korea (NRF), the Carbon Neutrality Demonstration and Research Center of UNIST, the Ministry of Trade, Industry and Energy and Korea (MOTIE), and Korea Evaluation Institute of Industrial Technology (KEIT). Their findings are expected to contribute to advancing the understanding and utilization of ammonia as a viable option for decentralized power generation systems.
Journal Reference
Dongjun Lim, Jong Ah Moon, Yeong Jin Koh, et al., “Expansion and optimization of ammonia import to the Republic of Korea for electricity generation,” Chem. Eng. J., (2023).
END
New study highlights feasibility and optimization of ammonia-based power generation for carbon neutrality
The study findings have been published ahead of their official publication in the online version of Chem. Eng. J. on May 13, 2023
2023-09-08
ELSE PRESS RELEASES FROM THIS DATE:
UTSA researchers explain plant’s medicinal power against COVID and glioblastoma
2023-09-08
Vibrant green leaves sprout from tall fragrant plants sitting neatly in two rows of terracotta pots in Valerie Sponsel’s UTSA biology laboratory. One floor just above her is the chemistry lab of Francis Yoshimoto, who is extracting the plant’s leaves for medicinal compounds. Soon, the researchers will meet with UTSA researcher Annie Lin, who will test the extracted compounds on cancer cells.
The plant is Artemisia annua, or Sweet Annie, and it contains medicinal compounds. UTSA researchers are studying the plant to understand the bioactive properties of one of these compounds, Arteannuin B, in cancer cells and COVID, the ...
Benchtop NMR spectroscopy can accurately analyse pyrolysis oils
2023-09-08
Benchtop NMR spectroscopy can accurately analyse pyrolysis oils
Pyrolysis bio-oils have the potential to be widely used as alternative fuels but are very complex to analyse
Cheaper, simpler, low-field, or ‘benchtop’, NMR spectrometers were able to accurately quantify key oxygen-containing components of pyrolysis bio-oils for the first time
More accessible analysis could help develop the potential of bio-oils as an alternative to fossil fuels
EMBARGOED UNTIL FRIDAY 8TH SEPTEMBER at 9am UK time 2023 | Birmingham, UK
A team of researchers at Aston University ...
The climate crisis could reshape Italian mountain forests forever
2023-09-08
As a result of the climate crisis, future forests may become unrecognizable. Trees that currently make up European woods may no longer be seen — or they may have moved several hundred meters uphill. Scientists writing in Frontiers in Forests and Global Change have mapped the forests of five vulnerable mountain areas in Italy and modelled the future of these fragile ecosystems.
“If I imagine my daughter walking with me as an old man, in our mountain forests, I can imagine that we can see the initial stage of a profound ...
Disney princesses can be good for a child’s self-image, UC Davis researchers suggest
2023-09-08
Children have loved Disney princesses since Snow White and the Seven Dwarfs premiered in theaters in 1937. While this adoration continues to grow in terms of princess movie ratings, some parents may wonder what effects these idealized images of young women might have on how their children feel about and express themselves.
According to new research from the University of California, Davis, a favorite princess improved — but did not harm — young children’s ...
University of Miami upgrades Atmospheric Chemistry Observatory in Barbados
2023-09-08
The observatory has been used to document the transport of Saharan dust particles across the Atlantic Ocean to the Caribbean, creating the longest-running dust data set in existence. Scientists from many different disciplines use the data to understand how dust particles impact everything from coral reef health to cloud formation and tropical storms.
Through a grant from the National Science Foundation (NSF), the University of Miami Rosenstiel School of Marine, Atmospheric, and Earth Science recently completed a major upgrade to its Barbados Atmospheric Chemistry Observatory (BACO), expanding its capability ...
Beaver activity in the Arctic increases emission of methane greenhouse gas
2023-09-08
The climate-driven advance of beavers into the Arctic tundra is causing the release of more methane — a greenhouse gas — into the atmosphere.
Beavers, as everyone knows, like to make dams. Those dams cause flooding, which inundates vegetation and turns Arctic streams and creeks into a series of ponds. Those beaver ponds and surrounding inundated vegetation can be devoid of oxygen and rich with organic sediment, which releases methane as the material decays.
Methane is also released when organics-rich permafrost thaws as the result of heat carried by the spreading water.
A study linking Arctic beavers to an increase in the release of methane was ...
Labour laws need updating now remote work is here to stay
2023-09-08
Australia’s employment laws and regulations must be updated to reflect the changing nature of work, with many people continuing to work from home long after the COVID-19 pandemic.
That’s according to University of South Australia Associate Professor of Organisational Behaviour Dr Ruchi Sinha who says labour laws and protections should be updated to clarify issues related to work hours, overtime, and breaks in a remote work context, now that almost half of all employees are working from home at least once a week.
The Australian Institute of Health and Welfare ...
UArizona scientists investigate new frontiers of sound with $30M center
2023-09-08
The National Science Foundation has granted the University of Arizona $30 million over five years to establish a new NSF Science and Technology Center. The New Frontiers of Sound Science and Technology Center, which comes with an additional $30 million funding option over the following five years, will bring together researchers working in topological acoustics.
With topological acoustics, researchers exploit the properties of sound in ways that could vastly improve computing, telecommunications and sensing. Applications could include reaching quantum-like computing speeds, reducing the power usage of smartphones, and sensing changes in aging infrastructure or the natural ...
Artificial intelligence could help build pollen jigsaw of present and ancient flora
2023-09-08
An emerging system which combines rapid imaging with artificial intelligence could help scientists build a comprehensive picture of present and historic environmental change – by swiftly and accurately analysing pollen.
Pollen grains from different plant species are unique and identifiable based on their shape. Analysing which pollen grains are captured in samples such as sediment cores from lakes helps scientists understand which plants were thriving at any given point in history, potentially dating back thousands to millions of years.
Up to now, scientists have manually ...
Distance from clinic influences abortion pill access
2023-09-08
Women who live farther from a medical clinic and those who identify as multiracial are more likely to use telemedicine to get abortion pills than to visit a clinic, according to a new study by researchers at the University of Washington School of Medicine.
The findings were published Sept. 1 in JAMA Network Open.
“One of the main takeaways,” said lead author Anna Fiastro, a family medicine research scientist at UW Medicine, “is that the further patients are from a brick-and-mortar clinic, the more ...
LAST 30 PRESS RELEASES:
High-quality nanodiamonds for bioimaging and quantum sensing applications
New clinical practice guideline on the process for diagnosing Alzheimer’s disease or a related form of cognitive impairment or dementia
Evolution of fast-growing fish-eating herring in the Baltic Sea
Cryptographic protocol enables secure data sharing in the floating wind energy sector
Can drinking coffee or tea help prevent head and neck cancer?
Development of a global innovative drug in eye drop form for treating dry age-related macular degeneration
Scientists unlock secrets behind flowering of the king of fruits
Texas A&M researchers illuminate the mysteries of icy ocean worlds
Prosthetic material could help reduce infections from intravenous catheters
Can the heart heal itself? New study says it can
Microscopic discovery in cancer cells could have a big impact
Rice researchers take ‘significant leap forward’ with quantum simulation of molecular electron transfer
Breakthrough new material brings affordable, sustainable future within grasp
How everyday activities inside your home can generate energy
Inequality weakens local governance and public satisfaction, study finds
Uncovering key molecular factors behind malaria’s deadliest strain
UC Davis researchers help decode the cause of aggressive breast cancer in women of color
Researchers discovered replication hubs for human norovirus
SNU researchers develop the world’s most sensitive flexible strain sensor
Tiny, wireless antennas use light to monitor cellular communication
Neutrality has played a pivotal, but under-examined, role in international relations, new research shows
Study reveals right whales live 130 years — or more
Researchers reveal how human eyelashes promote water drainage
Pollinators most vulnerable to rising global temperatures are flies, study shows
DFG to fund eight new research units
Modern AI systems have achieved Turing's vision, but not exactly how he hoped
Quantum walk computing unlocks new potential in quantum science and technology
Construction materials and household items are a part of a long-term carbon sink called the “technosphere”
First demonstration of quantum teleportation over busy Internet cables
Disparities and gaps in breast cancer screening for women ages 40 to 49
[Press-News.org] New study highlights feasibility and optimization of ammonia-based power generation for carbon neutralityThe study findings have been published ahead of their official publication in the online version of Chem. Eng. J. on May 13, 2023