The 7th International CO2 Conference Web Site - Effect of Vertical DIC Distribution on Storage Efficiency of Direct Injection of

by Baixin Chen

We estimated the effects of initial vertical distribution of dissolved inorganic carbon (DIC) on storage efficiency of direct injection of CO₂ into the ocean. Our simulations shown that the storage efficiencies could be reduced up to 10% if a relative large droplet (30 mm in diameter) was injected at depth of 1500m. The storage efficiency of CO₂ ocean sequestration is strongly related with not only injection depth but also the initial CO₂ droplet diameter. With a given injection rate, the larger droplets injected will produce a dilute DIC plume and thus improve the acute biological impacts but a smaller storage effective due to droplet ascending.

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