Minus Materials cultivates carbon-negative limestone from photosynthetic algae, which sequesters atmospheric CO2 during its growth. This bio-renewable limestone serves as a sustainable alternative to quarried limestone in cement production, significantly reducing the carbon emissions associated with traditional cement manufacturing.
Funding
$130K raised to dateRaised to date based on public sources. This may differ from the amount the company actually raised and is based only on what is publicly available on the internet.
Founders
Product
Problem
Traditional cement production relies on quarried limestone, a process that releases significant amounts of carbon dioxide into the atmosphere. The extraction and processing of geological limestone contribute substantially to the carbon footprint of the construction industry. Furthermore, diminishing regional availability and logistical challenges associated with quarrying can lead to increased costs and environmental impact.
Solution
Minus Materials cultivates carbon-negative limestone using photosynthetic algae, which naturally sequesters atmospheric CO2. This bio-renewable limestone serves as a direct replacement for quarried limestone in cement manufacturing, offering a sustainable alternative with a significantly reduced carbon footprint. The cultivated limestone performs comparably to quarried limestone, meeting essential ASTM standards without the embodied carbon. When heated during cement production, it releases only the CO2 that was previously captured from the atmosphere, creating a closed-loop carbon cycle. This approach enables the production of carbon-negative cement and supports the growing demand for portland limestone cement (PLC).
Target Audience
The primary customers are cement manufacturers, ready-mix suppliers, and precast producers seeking sustainable alternatives to reduce the carbon footprint of their products and meet evolving sustainability needs.
Features
- Cultivated limestone produced from photosynthetic algae, sequestering atmospheric CO2
- Direct replacement for quarried limestone in cement manufacturing
- Meets essential ASTM standards for limestone performance
- Reduces carbon emissions associated with traditional cement production
- Alleviates logistical challenges related to limestone quarrying, such as permitting and regional availability
- Enables the production of carbon-negative cement
- Acts as a filler for portland cement, meeting the demand for portland limestone cement (PLC)