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:

photo credit:

http://sitn.hms.harvard.edu

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