For ten years, Florian Osselin, with his colleagues from the Institute of Earth Sciences in Orléans, has been thinking about making hydrogen without emitting CO2, by injecting water (preferably from the sea) into iron-rich rocks in the Earth’s mantle. Chemical reactions, the same that occur naturally, take place, providing the precious gas. This so-called “orange” pathway, because of the color of the iron oxides, would replace the synthesis pathways based on methane or coal, or would complement production from renewable energies. The researcher proposes to take advantage of this to store CO2 in the rock, injecting it with water to transform it into stable carbonate.
Before making it a promising path, it will be necessary to check its feasibility, or find the effective temperature and pressure parameters. The researcher intends to set up a start-up to raise funds and finance this research.