We remove CO2 with the minerals
We remove carbon dioxide from the atmosphere by accelerating Earth’s natural carbon dioxide cycle.
Learn More
Carbon Capture For Every Farm
Natural Rock Weathering
Throughout the Earth’s history, most of our atmospheric carbon dioxide has been removed through weathering of silicate rocks. Silicate rock reacts with water and CO2 and as a result, dissolved bicarbonate are produced. Eventually, they wash away through rivers into the oceans where they form carbon-rich sediments.
Agricultural Ecosystems Development
By replacing the agricultural lime material, farmers regularly use, we are using basalt rock minerals to balance soils 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.
Direct Air Capture (DAC) vs. Enhanced Rock Weathering (ERW)
-
Environmental Risks
CO2 from DAC must be transported and then injected into geologic formations to be stored.
-
Still Expensive
As of 2024, the cost of the removal of a metric ton of CO2 ranges between $250 and $600.
-
Enables Oil Recovey
Enhanced oil recovery uses CO2 that is injected into the oil well to help pump out otherwise unreachable oil.
-
Energy Intensive
Since CO2 is not very concentrated in the atmosphere, it takes a lot of energy, and therefore is very expensive to remove.
-
Ready to Scale
Enhanced rock weathering (ERW) has the potential to remove up to 4 billion tonnes of CO2 per year – a staggering 40% of global targets.
-
Benefits for Farmers
Silicate rocks are naturally rich in nutrients such as magnesium, calcium and potassium. By spreading them on agricultural land, we’re increasing soil fertility, crop yield and global food security.
-
Permanent Storage
Unlike tree planting, carbon dioxide is permanently locked away for hundreds of thousands of years. When this dilute acid lands on our soils, the CO2 mineralises and is safely stored as solid carbon.
-
Existing Infrastructure
We use existing mining and farm machinery to spread an basalt on local lands. This ensures operations have a 90% carbon efficiency.
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
Enhanced Rock Weathering: Not Magic, Just Rock Science
GO NET ZERO
Carbon Removal Crediting Methodology
1. Registration
All credits (CORCs) are registered and managed throughout life-cycle in a digital system.
2. Verifiaction
Carbon removal projects are audited once a year by independent 3rd party verifiers.
3.Transperency
The carbon projects listings will be available on carbondrop platform,
and can be viewed by stakeholders.
4.Permanent
Permanent storage is the result of mineralization with time-span for thousands of years.
5.Measurablity
Upstream CO2 emissions are comprehensively estimated and included in the emission balance (LCA).
6.Tracebility
CO₂ removal projects must provide full project financials and counterfactual analysis.
7.Diversity
We work with partners from everywhere, no matter the origin, nor the source of orginal emissions.
The literature
Science Behind Our Framework
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