12 Marine CDR
Doney
A variety of ways to capture and store CO2 from the ocean have been suggested. For example, marine CDR may include altering the chemical composition of sea water so that the ocean absorbs more CO2 from the atmosphere; using electrochemical techniques to remove dissolved CO2 from seawater and then storing that CO2 underground; or adding nutrients such as iron to areas of the ocean to encourage the growth of microscopic plankton that can sink to the seafloor and be stored for centuries or longer.