geoengineering explained: the benefits and challenges of ocean alkalinity enhancement
Ocean alkalinity enhancement is increasements in the ocean’s alkalinity via the exposure of large quantities of reactive minerals to carbon dioxide in the atmosphere. Calcium oxide is created when temperatures of ca. 1000 degrees Celsius are used to heat high purity limestone.
The Calcium oxide is then stored in the ocean. The water prevents the abiotic carbonate precipitation.
This form of geoengineering is known as carbon dioxide removal [CDR].
see also:
Question: What is geoengineering?
Albedo Enhancement
Space Reflectors
Stratospheric Aerosols
Afforestation
Ambient Air Capture
Biochar
Bioenergy Capture and Sequestration
Ocean Fertilization
Enhanced Weathering
Ocean Alkalinity Enhancement
sources:
- Kheshgi, H. S. (1995). Sequestering atmospheric carbon dioxide by increasing ocean alkalinity. Energy, 20(9), 915-922.
- Ian S F Jones, C. H. (2003). Engineering Carbon Sequestration in the Ocean..
- Francois S. Paquay, R. E. (2013, May 9). Assessing possible consequences of ocean liming on ocean pH, atmospheric CO2 concentration and associated costs. International Journal of Greenhouse Gas Control, pp. 183-188.
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