We combine innovative monitoring technology and careful planning to create financially viable enhanced rock weathering (ERW) projects that can scale to provide the volumes of CO₂ removal needed to address the climate crisis.
ERW uses natural soil processes to store carbon dioxide as stable bicarbonate. The reaction of recycled rock powder with water and carbon dioxide binds the carbon in solid form which remains in the ocean for thousands of years.
ERW uses natural soil processes to store carbon dioxide as stable bicarbonate. The reaction of recycled rock powder with water and carbon dioxide binds the carbon in solid form which remains in the ocean for thousands of years.
Farmers know what they would normally spread on their fields, allowing for an accurate baseline calculation
Since ERW uses quarry byproduct materials, there is no displacement of economic activity
Once weathering products reach the ocean, the carbon is stable for thousand of years
ZeroEx is the sole seller of its ERW carbon credits
ZeroEx has pioneered the use of ion exchange resin devices, known as self-integrating accumulators (SIAs), for the measurement, reporting, and verification (MRV) of carbon removal through ERW. SIAs provide time-integrated measurements of the dissolved molecules produced by weathering, making them the most precise and cost-effective method for tracking true carbon sequestration in ERW.
ZeroEx has pioneered the use of ion exchange resin devices, known as self-integrating accumulators (SIAs), for the measurement, reporting, and verification (MRV) of carbon removal through ERW. SIAs provide time-integrated measurements of the dissolved molecules produced by weathering, making them the most precise and cost-effective method for tracking true carbon sequestration in ERW.
Measures weathering products exported with the soil leachate.
HIGHER ACCURACY, LOWER MRV COSTS
Water-based monitoring made as easy as soil-based measurements.
SCIENCE-BASED
Scientifically validated in numerous peer-reviewed studies.
GLOBALLY DEPLOYED
2,000+ SIAs currently installed around the world.
ZeroEx has pioneered the use of ion exchange resin devices, known as self-integrating accumulators (SIAs), for the measurement, reporting, and verification (MRV) of carbon removal through ERW. SIAs provide time-integrated measurements of the dissolved molecules produced by weathering, making them the most precise and cost-effective method for tracking true carbon sequestration in ERW.
By spreading basalt rock powder over agricultural fields, ERW projects maximize the surface area of rock available for weathering, accelerating a geological process to the time frame of a few years
We source unused rock powder as close to farms as possible and optimize for greatest sequestration potential
Pioneering technology and industry-leading measurement protocols generate accurate and verifiable carbon credits
Precision powder spreading with GPS tracking ensures optimal coverage and transparency
Rock powder captures CO₂ while enhancing soil fertility. Removal measured in soil, water, and SIAs.
By spreading basalt rock powder over agricultural fields, ERW projects maximize the surface area of rock available for weathering, accelerating a geological process to the time frame of a few years
ERW can be replicated globally using existing infrastructure and simple, reliable SIA measurements.
We partner with CDR developers and ERW researchers around the world
Partnership with Anglo American to evaluate SIAs for large-scale deployment in tropical conditions
Collaboration with ERW developer InPlanet to test SIAs for future use in their projects.
Collaboration with project developer Mombak to pilot the use of ERW and SIAs as an extension of their reforestation business.
Pilot project to demonstrate the viability of ERW as CDR strategy in Ukraine.
Collaboration with Yale University to test the performance of SIAs against several other MRV methods.
Field trial conducted by Cascade Climate & Carleton College to test the performance of SIAs in comparison to conventional MRV methods.
Comparison of SIAs to alkalinity sensors in a field trial funded by the Cascade Climate ERW Field Data Partnership Grant in collaboration with Basic Dust and Prof. Christiana Dietzen.
Mesocosm experiment in collaboration with Novonesis to test whether carbonic anhydrase (CA) enzyme can speed up dissolution of ERW feedstock.
ERW deployment using carbon-neutral byproduct material with very low heavy metal concentrations.
Field trials including > 200 SIAs, testing different installation methods and depths on three research plots in the Eifel region in Germany.
Assessment of potentially toxic elements in ERW funded by the Climate Intervention Environmental Impact Fund (CIEIF).
Send us your idea for project or let’s discuss how we can collaborate.