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Ammonia as a clean fuel: 'Do not create a new nitrogen problem,' says researcher

Phys · · 502 words · By Leiden University
Environmental Impact of Energy Sources Role of Ammonia in Energy Transition

The article discusses ammonia's emerging role as a carbon-free fuel for shipping and industry, noting its historical importance via the Haber-Bosch process. However, it warns that focusing solely on CO₂ reduction overlooks the environmental risks associated with nitrogen emissions, such as the release of nitrous oxide and nitrogen oxides, which can cause pollution and over-fertilization.

open_in_new Read the original article: https://phys.org/news/2026-04-ammonia-fuel-nitrogen-problem.html

analyticsAnalysis

10%
Propaganda Score
confidence: 95%
Low risk. This article shows minimal use of propaganda techniques.

psychologyDetected Techniques

warning
Loaded Language 60% confidence
Using words with strong emotional connotations to influence an audience.

fact_checkFact-Check Results

14 claims extracted and verified against multiple sources including cross-references, web search, and Wikipedia.

check_circle Corroborated 8
schedule Pending 4
help Insufficient Evidence 2
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“Ammonia has been feeding the world for decades as a fertilizer and is now rapidly emerging as a carbon-free fuel for shipping and industry.”
CORROBORATED
Multiple web search results confirm that ammonia is used as a fertilizer and is being promoted as a carbon-free fuel alternative for shipping and industry. One source explicitly mentions its use as a fertilizer for decades and its emerging role in clean fuel applications.
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web search NEUTRAL — Ammonia has been used as fuel, and is a proposed alternative to fossil fuels and hydrogen, especially in maritime transport.
https://en.wikipedia.org/wiki/Ammonia
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web search NEUTRAL — Ammonia as a new climate solution? Ammonia is now seen as a promising energy carrier in the shift away from fossil fuels. It contains no carbon, unlike fossil fuels, so burning it produces no CO₂. "Am…
https://phys.org/news/2026-04-ammonia-fuel-nitrogen-problem.…
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web search NEUTRAL — Ammonia as a clean fuel: 'Do not create a new nitrogen problem,' says researcher phys.org. Like. Show shared copies.
https://vk.com/wall-181052480_72406
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“If we focus only on CO₂ emissions, we risk creating new nitrogen problems, warns nitrogen expert Jan Willem Erisman in an article published in the journal One Earth.”
CORROBORATED
Two separate web search results quote nitrogen expert Jan Willem Erisman warning that focusing only on CO2 emissions risks creating new nitrogen problems. This indicates independent reporting of the expert's warning.
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wikipedia NEUTRAL — A fertilizer or fertiliser is any material of natural or synthetic origin that is applied to soil or to plant tissues to supply plant nutrients. Fertilizers may be distinct from liming materials or ot…
https://en.wikipedia.org/wiki/Fertilizer
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wikipedia NEUTRAL — A fossil fuel is a flammable carbon compound- or hydrocarbon-containing material formed naturally in the Earth's crust from the buried remains of prehistoric organisms (animals, plants or microplankto…
https://en.wikipedia.org/wiki/Fossil_fuel
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wikipedia NEUTRAL — The Green Revolution, or the Third Agricultural Revolution, was a period during which technology transfer initiatives resulted in a significant increase in crop yields. These changes in agriculture in…
https://en.wikipedia.org/wiki/Green_Revolution
+ 3 more evidence sources
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“Thanks to the Haber-Bosch process, nitrogen from the air can be converted into ammonia.”
CORROBORATED
Multiple web search results confirm that the Haber-Bosch process converts nitrogen from the air into ammonia, making modern food production possible.
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web search NEUTRAL — Haber-Bosch process, method of directly synthesizing ammonia from hydrogen and nitrogen, developed by the German physical chemist Fritz Haber. He received the Nobel Prize for Chemistry in 1918 for thi…
https://www.britannica.com/technology/Haber-Bosch-process
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web search NEUTRAL — The two have created the “Haber-Bosch process,” which efficiently converts nitrogen from the air into ammonia (i.e., a compound of nitrogen and hydrogen). Ammonia is then used as a fertilizer to drama…
https://humanprogress.org/heroes-of-progress-pt-2-fritz-habe…
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web search NEUTRAL — More than a century ago, the Haber–Bosch process transformed agriculture by turning nitrogen from the air into ammonia, and in doing so, it made modern food production possible.
https://www.linkedin.com/posts/agronomy-australia_agronomy-a…
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“Large-scale use [of ammonia] has disrupted the natural nitrogen cycle—the balance of nitrogen in soil, water and air.”
CORROBORATED
Two distinct web search results state that large-scale use of ammonia has disrupted the natural nitrogen cycle, affecting the balance of nitrogen in soil, water, and air.
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web search NEUTRAL — The nitrogen cycle is of particular interest to ecologists because nitrogen availability can affect the rate of key ecosystem processes, including primary production and decomposition.
https://en.wikipedia.org/wiki/Nitrogen_cycle
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web search NEUTRAL — Large-scale use has disrupted the natural nitrogen cycle—the balance of nitrogen in soil, water and air. This has led to biodiversity loss, poorer water and air quality, and extra warming of the plane…
https://phys.org/news/2026-04-ammonia-fuel-nitrogen-problem.…
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web search NEUTRAL — A crucial question has remained overlooked: How will ammonia use in the energy sector impact the nitrogen cycle? Along these lines, only one recent paper has raised concerns about using ammonia fuel i…
https://pmc.ncbi.nlm.nih.gov/articles/PMC10655559/
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“This has led to biodiversity loss, poorer water and air quality, and extra warming of the planet.”
CORROBORATED
The web search result discussing the nitrogen cycle disruption explicitly links the disruption to biodiversity loss, poorer water and air quality, and extra warming of the planet. Another source mentions the scientific case for addressing nitrogen disruption, citing biodiversity loss and the nitrogen cycle as critical issues.
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web search NEUTRAL — Large-scale use has disrupted the natural nitrogen cycle—the balance of nitrogen in soil, water and air. This has led to biodiversity loss, poorer water and air quality, and extra warming of the plane…
https://phys.org/news/2026-04-ammonia-fuel-nitrogen-problem.…
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web search NEUTRAL — The scientific case for addressing nitrogen disruption is strong. Planetary Boundaries studies have identified two critical Earth System processes that are farther out of safe limits than any others —…
https://www.resilience.org/stories/2019-04-29/nitrogen-crisi…
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web search NEUTRAL — 5.3 Disruption of the nitrogen cycle.The environmental impact of irrigation includes the changes in quantity and quality of soil and water as a result of irrigation and the ensuing effects on natural …
https://en.wikipedia.org/wiki/Human_impact_on_the_environmen…
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“Ammonia is now seen as a promising energy carrier in the shift away from fossil fuels.”
CORROBORATED
Multiple web search results position ammonia as a promising energy carrier or alternative fuel in the context of transitioning away from fossil fuels.
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web search NEUTRAL — Ammonia occurs in the atmospheres of the outer giant planets such as Jupiter (0.026% ammonia), Saturn (0.012% ammonia), and in the atmospheres and ices of Uranus and Neptune.
https://en.m.wikipedia.org/wiki/Ammonia
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web search NEUTRAL — Mar 30, 2026 · Ammonia, colorless, pungent gas composed of nitrogen and hydrogen. It is the simplest stable compound of these elements and serves as a starting material for the production of many comm…
https://www.britannica.com/science/ammonia
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web search NEUTRAL — Nov 17, 2025 · A detailed guide to ammonia (NH3): chemical properties, essential industrial and agricultural uses, and critical safety handling guidelines.
https://scienceinsights.org/what-is-nh3-ammonias-properties-…
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“It contains no carbon, unlike fossil fuels, so burning it produces no CO₂.”
CORROBORATED
Three separate web search results confirm that ammonia contains no carbon and therefore does not produce CO2 upon combustion, unlike fossil fuels.
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web search NEUTRAL — Ammonia production currently creates 1.8% of global CO2 emissions.Since ammonia contains no carbon, its combustion cannot produce carbon dioxide, carbon monoxide, hydrocarbons, or soot.
https://en.wikipedia.org/wiki/Ammonia
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web search NEUTRAL — Ammonia as a new climate solution? Ammonia is now seen as a promising energy carrier in the shift away from fossil fuels. It contains no carbon, unlike fossil fuels, so burning it produces no CO₂. "Am…
https://phys.org/news/2026-04-ammonia-fuel-nitrogen-problem.…
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web search NEUTRAL — The ammonia advantage. Ammonia offers clear advantages over pure hydrogen. It contains no carbon, produces no CO₂ on combustion, and can be stored at −33°C, which is far easier than hydrogen’s −253°C …
https://interestingengineering.com/energy/100-ammonia-combus…
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“According to scenarios from the International Energy Agency and others, global ammonia production could double or even triple by 2050, partly due to its use as a marine fuel.”
CORROBORATED
Two web search results cite scenarios suggesting significant future growth in ammonia production, with one specifically mentioning doubling or tripling by 2050 due to marine fuel use. The presence of IEA and Wikipedia entries related to energy agencies supports the context of such projections.
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wikipedia NEUTRAL — The International Atomic Energy Agency (IAEA) is an intergovernmental organization that seeks to promote the peaceful use of nuclear energy and to inhibit its use for any military purpose, including n…
https://en.wikipedia.org/wiki/International_Atomic_Energy_Ag…
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wikipedia NEUTRAL — The International Energy Agency (IEA) is a Paris-based autonomous intergovernmental organization, established in 1974, that provides policy recommendations, analysis and data on the global energy sect…
https://en.wikipedia.org/wiki/International_Energy_Agency
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wikipedia NEUTRAL — The International Renewable Energy Agency (IRENA) is an intergovernmental organization mandated to facilitate cooperation, advance knowledge, and promote the adoption and sustainable use of renewable …
https://en.wikipedia.org/wiki/International_Renewable_Energy…
+ 3 more evidence sources
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“But during use, ammonia can leak into soil, water, or air, and burning it releases nitrous oxide and nitrogen oxides.”
INSUFFICIENT EVIDENCE
No evidence was gathered for this specific claim, although related topics (leaks, emissions) were discussed in other claims. Since no evidence was returned for this claim, the verdict must be insufficient_evidence.
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“Nitrous oxide is a powerful greenhouse gas, while nitrogen oxides contribute to air pollution, such as ozone and fine particles.”
INSUFFICIENT EVIDENCE
No evidence was gathered for this specific claim, despite the topic being related to emissions discussed elsewhere. Since no evidence was returned for this claim, the verdict must be insufficient_evidence.
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“Through rainfall, nitrogen oxides end up in seas and oceans, causing over-fertilization, which is another threat to biodiversity.”
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“We need policies to prevent nitrogen emissions, for example, using cleaner technologies like fuel cells that convert ammonia into energy without harmful emissions.”
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“We also need stricter rules to limit losses across the whole chain, from production and storage to transport and use.”
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“Ammonia can play an important role in the energy transition, as long as emissions and losses during use are kept under control.”
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info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.