Fertilizer that puts CO₂ back in the soil
Ground‑truth science shows that finely milled basalt spread on cropland captures CO₂ faster than 1 t ha⁻¹ yr⁻¹ while enriching soil health. Join us as we scale the world’s cheepest carbon‑lock.
Learn more
Enhanced Rock Weathering
Crop & Soil Co‑Benefits
By replacing the agricultural lime material, farmers regularly use, we are using basalt rock minerals to balance soil pH while safely and efficiently removing carbon dioxide. Soils are regenerated as a result of the nutrient addition from the fresh rock minerals, supporting the production of healthy crops.
Carbondrop Matrix™ - Same Minerals, Smarter Delivery
-
Farm-Ready Deployment
Carbondrop’s binder tech pelletizes it into a hydrogel that locks into the root zone and spreads with standard equipment
-
Soil Performance Boost
Carbondrop Matrix boosts nutrient delivery (Ca-Mg-K), and retains water in dry periods—delivering immediate agronomic value
-
Immediate Soil Impact
Our hydrogel matrix accelerates mineralization of CO₂ into carbonates by increasing surface area stability and ensuring better soil interaction.
-
Scalable Without Complexity
We’ve designed Carbondrop Matrix for the realities of farming: transportable in bulk, storable on site, and spreadable with conventional tools.
-
Field-Verified Scale
ERW trials show 1-2 t-CO₂ ha-¹ yr-¹on temperate cropland—enough to reach gigaton-scale at 10 % of global farmland.
-
Soil & Yield Gains
Basalt adds Ca-Mg-K, raises pH and delivered +6 % maize yield in 2023 EU demo plots.
-
Geological Permanence
CO₂ converts to stable carbonates >10 000 years; no reversal risk or buffer pools required
-
Low Energy
Grinding + hauling ≈ 25–40 kWh t-CO₂; projected cost $100 t-CO₂ once mine-waste basalt is mainstreamed
Scaling Carbon Removal to Climate Relevant Levels
We are a ecosystem centred carbon removal company on a mission to remove gigatons of CO2 from the atmosphere.
We enable farmers in the Europe to remove atmospheric CO2 and move toward more sustainable agricultural practices.
We are dedicated to scientific integrity and research, measuring a broad range of direct and indirect parameters that quantify carbon dioxide removal (CDR) or understand weathering reactions.
Science set to scale
We permanently lock away CO₂ with basalt-powered Enhanced Rock Weathering
GO NET ZERO
Carbondrop CDR Crediting backed by Isometrics
Registration
All credits (CDRs) are registered and managed throughout life-cycle in a digital system.
Verification
Carbondrop projects are audited once a year by independent 3rd party verifier Isometric.
Transparency
The carbon projects listings will is available on carbondrop data platform
and can be viewed by stakeholders.
Permanence
Permanence storage is the result of mineralization with time-span for thousands of years.
LCA Accounting
Upstream CO2 emissions are comprehensively estimated and included in the emission balance (LCA).
Traceability
CO₂ removal projects provide full project financials and counterfactual analysis.
Partnership
We work with CDR buyers from everywhere, no matter the origin, nor the source of orginal emissions.
References
Science Behind Carbondrop™
CO2 & Atmosphere
Rae, J. W. B. et al. Atmospheric CO2 over the Past 66 Million Years from Marine Archives. Annu. Rev. Earth Planet. Sci. 49, 609–641 (2021).
Climate Change
Shukla, P. R. et al. IPCC, 2022: Climate Change 2022: Mitigation of Climate Change. Contribution of Working Group III to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press (2022).The Climate Book. (Penguin Random House UK, 2022).State of CO2
Smith, S. M. et al. The State of Carbon Dioxide Removal - 1st Edition. (The State of Carbon Dioxide Removal, 2023).
Natural weathering estimates
Frings, P. J. Palaeoweathering: How Do Weathering Rates Vary with Climate? Elements 15, 259–265 (2019).
Hartmann, J., Jansen, N., Dürr, H. H., Kempe, S. & Köhler, P. Global CO2-consumption by chemical weathering: What is the contribution of highly active weathering regions? Glob. Planet. Change 69, 185–194 (2009).
Kasting, J. F. The Goldilocks Planet? How Silicate Weathering Maintains Earth “Just Right”. Elements 15, 235–240 (2019).
Porder, S. How Plants Enhance Weathering and How Weathering is Important to Plants. Elements 15, 241–246 (2019).
Renforth, P. The negative emission potential of alkaline materials. Nat. Commun. 10, 1401 (2019).
Weathering - silicate vs. carbonate minerals
Liu, Z., Dreybrodt, W. & Liu, H. Atmospheric CO2 sink: Silicate weathering or carbonate weathering? Appl. Geochemistry 26, S292–S294 (2011).
Palandri, J. L. & Kharaka, Y. K. A compilation of rate parameters of water-mineral interaction kinetics for application to geochemical modelling. Open-File Report (2004).
Overview papers
Hartmann, J. et al. Enhanced chemical weathering as a geoengineering strategy to reduce atmospheric carbon dioxide, supply nutrients, and mitigate ocean acidification. Rev. Geophys. 51, 113–149 (2013).
Renforth, P. & Henderson, G. Assessing ocean alkalinity for carbon sequestration. Rev. Geophys. 55, 636–674 (2017)..
Enhanced weathering field studies
Almaraz, M. et al. Methods for determining the CO2 removal capacity of enhanced weathering in agronomic settings. Frontiers in Climate 4, (2022).
Dietzen, C. & Rosing, M. T. Quantification of CO2 uptake by enhanced weathering of silicate minerals applied to acidic soils. Int. J. Greenh. Gas Control 125, 103872 (2023).
Hamilton, S. K., Kurzman, A. L., Arango, C., Jin, L. & Robertson, G. P. Evidence for carbon sequestration by agricultural liming. Global Biogeochem. Cycles 21, (2007).
Holzer, I. O., Nocco, M. A. & Houlton, B. Z. Direct evidence for atmospheric carbon dioxide removal via enhanced weathering in cropland soil. Environ. Res. Commun. 5, 101004 (2023).
Knapp, W. J. et al. Quantifying CO2 Removal at Enhanced Weathering Sites: a Multiproxy Approach. Environ. Sci. Technol. (2023).
Larkin, C. S. et al. Quantification of CO2 removal in a large-scale enhanced weathering field trial on an oil palm plantation in Sabah, Malaysia. Frontiers in Climate 4, (2022).
Enhanced weathering modelling studies
Beerling, D. J. et al. Potential for large-scale CO2 removal via enhanced rock weathering with croplands. Nature 583, 242–248 (2020).
Kantzas, E. P. et al. Substantial carbon drawdown potential from enhanced rock weathering in the United Kingdom. Nat. Geosci. 15, 382–389 (2022).
Zeng, S., Liu, Z. & Groves, C. Large-scale CO2 removal by enhanced carbonate weathering from changes in land-use practices. Earth-Science Rev. 225, 103915 (2022).
Andrews, M. G. & Taylor, L. L. Combating Climate Change Through Enhanced Weathering of Agricultural Soils. Elements 15, 253–258 (2019).
Carbon credits accounting
Brander, M., Ascui, F., Scott, V. & Tett, S. Carbon accounting for negative emissions technologies. Clim. Policy 21, 699–717 (2021).
Brander, M. & Broekhoff, D. Discounting emissions from temporarily stored carbon creates false claims on contribution to cumulative emissions and temperature alignment. SSRN (2023).
Fridahl, M., Hansson, A. & Haikola, S. Towards Indicators for a Negative Emissions Climate Stabilisation Index: Problems and Prospects. Climate 8, (2020).
Russel, S. Estimating and Reporting the Comparative Emissions Impacts of Products. (2019).
Subke, J.-A., Kutzbach, L. & Risk, D. Soil Chamber Measurements BT - Springer Handbook of Atmospheric Measurements. in (ed. Foken, T.) 1603–1624 (Springer International Publishing, 2021).
If you are interested, please send your latest research to contact@carbondrop.net
Contact us