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Enhanced Weathering: An Effective and Cheap Tool to Sequester Co2


Weathering and subsequent precipitation of Ca- and Mg-carbonates are the main processes that control the CO2-concentration in the atmosphere. It seems logical, therefore, to use enhanced weathering as a tool to reduce rising CO2-levels. This can be applied as a technology, by reacting captured CO2 with olivine or calcium-silicates in autoclaves. It can also be applied extensively, by spreading fine-powdered olivine on farmland or forestland. Measures to control the CO2-levels of the atmosphere will be adopted more readily if they also serve some broader economic goals. An effective strategy for CO2 control will require many parallel approaches simultaneously.

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Schuiling, R.D., Krijgsman, P. Enhanced Weathering: An Effective and Cheap Tool to Sequester Co2 . Climatic Change 74, 349–354 (2006).

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