Abstract
Sub-seabed disposal is the safest disposal option for CO 2. Water pressure and dilution into oceanic water prevent direct emission of CO 2 into the air. Sediments under the deep sea floor are usually cool because the deep oceanic water is very cool. CO 2 hydrate forms in the sediments in areas of the sea floor deeper than 300 m. The formation of CO 2 hydrate in sediment pores almost completely prevents the escape of CO 2.
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