Our Technology
We’ve built a biological process that turns CO₂ into stone. By cultivating mineral-precipitating microalgae, we accelerate nature’s own carbon cycle, transforming emissions into stable minerals that can replace mined limestone in industry. Our approach creates building materials that store carbon instead of emitting it.
Capture → Grow → Mineralize → Build → Recycle.
Capture → Grow → Mineralize → Build → Recycle.
Stage 1: CO₂ Capture
Every mineral begins with carbon. At Bloomineral, we source CO₂ from industrial emissions and from the atmosphere, the same molecule driving climate change, and prepare it as a feedstock for mineralization.
Once dissolved into water as bicarbonate, this carbon enters a closed-loop system. Instead of compressing and burying CO₂, we feed it into a biological process that converts it into solid mineral carbonates that are stable, valuable, and permanently removed from the atmosphere.
What begins here as a gas will, within hours, start its transformation into stone.
Stage 2: Algae Growth
In our open ponds, biology takes the lead. We cultivate specialized macroalgae that grow by absorbing dissolved CO₂ from water. Through photosynthesis and controlled chemistry, they convert this carbon into ultra-pure calcium carbonate as they grow.
Each pond becomes a living mineral factory, where light, water, and biology work together to precipitate solid carbonates directly from the captured gas. The process is continuous and self-sustaining, producing both biomass and mineral material ready for collection.
Stage 3: Biomineralization
In this stage, microscopic crystals form and accumulate on the algae’s surface and in the surrounding water. The result is a fine, crystalline powder that captures carbon in a solid, stable state. This mineralization process happens rapidly and under ambient conditions, without the need for high heat or pressure.
Here, biology completes its transformation of CO₂ into stone: permanent, inert, and ready to be used again as a building material.
As our algae grow, they naturally trigger the precipitation of minerals within their environment. The carbon they have absorbed reacts with dissolved calcium in the water, forming ultra-pure calcium carbonate, the same mineral found in shells, corals, and limestone.
Stage 4: Material Formation
By integrating this carbon-negative mineral into existing manufacturing processes, we create products that lock away CO₂ for centuries while maintaining the performance industry requires. Our goal is not to add another step to production, but to make carbon storage part of how materials are made.
From pond to powder to product, we close the loop, transforming emissions into the building blocks of a low-carbon world.
The ultra-pure calcium carbonate created in our ponds becomes a direct substitute for mined limestone, the core ingredient of cement and other construction materials.