Australia’s red soil may be hiding a massive clean energy source

Researchers from Edith Cowan University in Australia have uncovered a potential source of clean, low-emission energy hidden beneath Western Australia. The key lies in magnetite, a mineral abundant in the region's vast iron ore deposits, particularly in the Pilbara region.

The team from ECU's School of Engineering discovered that magnetite can generate hydrogen gas when it reacts with hot water, similar to conditions found deep within the Earth's surface. By injecting a solution into banded iron formations, the researchers were able to stimulate this hydrogen generation process.

According to Associate Professor Alireza Keshavarz, the region holds enormous potential for hydrogen production, enough to benefit Australia for generations and possibly become a major exporter of clean energy.

To better understand the process, the researchers conducted experiments where magnetite samples were placed in hot water at high pressure for 60 days, replicating the deep underground conditions. These experiments provided valuable insights into how natural hydrogen formation occurs within rock and the conditions necessary for sustained production.

Lead author Kaveh Moghanirahimi emphasized the significance of the findings for Western Australia, home to some of the world's largest banded iron formations. He stated, "If we can unlock this resource at scale, it could be transformative for our energy future, even enhancing energy independence during times of crisis."

Professor Stefan Iglauer from ECU's School of Engineering noted that the research brings scientists closer to understanding how hydrogen production can occur naturally in real underground rock formations, not just in laboratory settings. The study also revealed that the structure of the rock, particularly the presence of fractures and permeable pathways, plays a crucial role in determining the efficiency of natural hydrogen generation.