This startup provides carbon removal technology through enhanced rock weathering, which increases the surface area of minerals to accelerate natural carbon dioxide mineralization. Their method enables large-scale carbon sequestration and soil enhancement in agricultural and industrial applications, addressing the urgent need for effective climate change mitigation strategies.
Funding
$270K 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
Atmospheric carbon dioxide concentrations continue to rise, necessitating scalable and cost-effective carbon removal technologies to mitigate climate change. Traditional methods of carbon sequestration often lack the durability and co-benefits needed for widespread adoption.
Solution
Green Sequest leverages enhanced rock weathering (ERW) using antigorite serpentinite to permanently remove carbon dioxide from the atmosphere. The process involves crushing serpentinite rock to increase its surface area, accelerating natural mineralization and CO2 absorption. This mineral-rich material is then applied to agricultural lands, industrial sites, and road infrastructure, where it reacts with atmospheric CO2 and rainwater to form stable carbonates, effectively locking away carbon for over 10,000 years. In agricultural applications, the serpentinite also acts as a soil amendment, providing essential micronutrients and improving water retention, leading to enhanced crop yields and soil health. The company is also exploring the use of serpentinite in chimney filters to capture CO2 at the source of industrial emissions.
Target Audience
The primary target audience includes agricultural producers seeking enhanced soil health and crop yields, industrial companies aiming to reduce their carbon footprint, and organizations focused on carbon removal and climate change mitigation.
Features
- Utilizes antigorite serpentinite, a rock with a high mineralization yield factor for CO2 capture
- Employs enhanced rock weathering (ERW) to accelerate natural carbon mineralization processes
- Produces mineral fertilizers based on serpentinite, authorized for use in agriculture
- Provides a dual benefit of carbon removal and soil enhancement through remineralization
- Improves soil properties, including water retention, nutrient richness, and pH regulation
- Developing methods for measuring, verifying, and reporting (MRV) carbon removal
- Exploring applications in chimney filters for carbon capture at industrial sources
- Approved mineral soil improver "Green Mag Balance" increases soil water retention by 66%