Spreading crushed silicate rocks, such as basalt, on agricultural fields (enhanced rock weathering) can remove up to 1.1 to 2 billion tonnes of πΆπ2 CO2 annually from the atmosphere, providing a significant tool for reaching net-zero emissions. This method accelerates natural weathering, boosts soil nutrients, increases crop yields, and is most effective in countries with large croplands like China, the U.S., and India. Key Aspects of Enhanced Rock Weathering:-
Spreading crushed silicate rocks, such as basalt, on agricultural fields (enhanced rock weathering) can remove up to 1.1 to 2 billion tonnes of πΆπ2 CO2 annually from the atmosphere, providing a significant tool for reaching net-zero emissions. This method accelerates natural weathering, boosts soil nutrients, increases crop yields, and is most effective in countries with large croplands like China, the U.S., and India. Key Aspects of Enhanced Rock Weathering:- Carbon Capture Mechanism: - Rainwater breaks down the rock dust, turning CO2πΆπ2 into stable bicarbonates that are washed into the ocean, locking away carbon for thousands of years. Agricultural Benefits: - The process improves soil health, replaces nutrients lost to farming (calcium, magnesium), and can increase crop yields. Scaling Potential: - Studies estimate that applying basalt to global croplands could capture 1–2 billion tonnes of CO2πΆπ2 annually. Economic Factors:- Costs range from $80 to 16...