Natural Hydrogen Reserves in Western Australia Offer Clean Energy Potential, According to Edith Cowan University Study
Researchers investigating subterranean iron ore deposits have found that water reacting with underground magnetite can generate abundant natural hydrogen gas, pointing toward a transformative low-carbon energy future for Australia.
Natural hydrogen reserves hidden within Western Australia’s vast iron ore deposits could provide a clean fuel source for generations, according to a laboratory study published by researchers from Edith Cowan University in the International Journal of Hydrogen Energy. Led by Alireza Keshavarz, the team evaluated geological processes involving hot water and subsurface magnetite, determining that fractured, porous rocks yield high quantities of hydrogen gas and present a viable path toward commercial extraction and clean energy export.
How Subsurface Magnetite Generates Natural Hydrogen
Finding natural sources of hydrogen is a primary goal for researchers seeking to fast-track a low-carbon energy future. While most hydrogen today relies on fossil fuels, tapping into geological reserves avoids that drawback. According to researchers at Edith Cowan University, one key formation process occurs when hot water hits the magnetite mineral found in iron ore.
To test how much hydrogen gas might exist underground, the research team conducted laboratory experiments recreating subsurface environments. They exposed magnetite to water under high pressure at temperatures of 200 °C (392 °F) for 60 days, according to the study published by Moghanirahimi and colleagues.
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Magnetite powder produced approximately five times more hydrogen per gram than solid magnetite slabs during the laboratory trials, highlighting the importance of surface area and fractured rock pathways in natural hydrogen exploration.
Powder Versus Slab Magnetite: Surface Area Controls Gas Yield
Fluid access to magnetite through fractures and permeable rock is the critical driver of hydrogen formation, as noted by Stefan Iglauer. By testing both powder and slab forms of the mineral, the team established that greater surface exposure dramatically boosts gas output.
“Our findings show that production depends not only on the amount of magnetite present, but also on how easily water can access fresh mineral surfaces through fractures, pores and permeable pathways,” Iglauer explains. This work helps bridge the gap between controlled laboratory tests and real-world geological systems.
The experiments revealed an additional chemical shift: the reaction transformed much of the remaining magnetite into hematite. At larger geological scales, this transformation may form a protective layer that restricts further water access to the underlying magnetite.
Transforming Australia Into a Major Clean Energy Exporter
Western Australia holds extensive underground iron ore deposits, meaning the geological ingredients for natural hydrogen generation are already present on a massive scale. Researchers emphasize that unlocking this resource could alter the country’s energy landscape permanently.
“Australia could be sitting on a massive, untapped energy reserve—and the potential is enormous,” according to Alireza Keshavarz. He adds that the subsurface supply contains enough hydrogen to benefit the nation for generations and potentially establish Australia as a major exporter of clean energy globally.
Kaveh Moghanirahimi points out the strategic advantages for the region. “If we can unlock this resource at scale, it could be transformative for our energy future,” Moghanirahimi states, noting the potential for Western Australia to strengthen its energy independence during times of crisis through access to naturally generated hydrogen.
Frequently Asked Questions
How is natural hydrogen produced underground?
Natural hydrogen forms through geological reactions, specifically when hot water interacts with minerals like magnetite found within subterranean iron ore deposits under high temperature and pressure.
What did the Edith Cowan University study discover?
Researchers found that magnetite powder yields about five times more hydrogen per gram than solid magnetite slabs, proving that fractured, permeable rock formations with high surface area are prime locations for natural hydrogen accumulation.
Why is natural hydrogen important for a low-carbon future?
Most commercial hydrogen today is produced using fossil fuels. Tapping into abundant natural underground reserves provides a truly clean fuel source without the carbon emissions associated with industrial production.
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