In partnership with the SENAI Institute for Innovation in Mineral Technologies (ISI-TM), the project proposes an innovative approach to transforming mining waste into an ally in mitigating climate change and restoring degraded areas. The initiative seeks to develop methodologies to accelerate the weathering of alkaline silicate rocks (such as basalt) and slag from nickel production, in order to promote carbon sequestration in the soil and the release of essential nutrients for revegetation with native species.
The dynamic between soil, microorganisms, and plants is central to the success of the strategy. During the natural weathering process, basalt and slag release cations such as magnesium (Mg²⁺), calcium (Ca²⁺), iron (Fe³⁺), and silicon (Si), which react with atmospheric CO₂ and form stable carbonate minerals in the soil, such as siderite, calcite, and magnesite. This process not only removes CO₂ from the atmosphere, but also enhances soil fertility, favoring plant growth and microbial activity.
By exploring nature-based solutions and the sustainable use of industrial waste, the project also contributes to Brazil’s commitment to the Paris Agreement.