Diffusion from the Partially Filled CO₂ in the Sea Bottom Basin and Its Control

Abstract

The diffusion and convection flow will occur concurrently in the CO₂ storage well by being induced from the ocean current and results in the CO₂ diffusion into the ocean. Authors studied these phenomena in the ocean and the horizontally connected sea bottom basin in which liquid CO₂ was sequestrated in about a partial depth. The geography of the sea bottom and its basin was approximated by three-dimensional shape. The characteristic properties and behaviors of CO₂ in seawater were taken into analysis. Finally the conceptual marine structures and installation procedures of the system for the restraints of diffusion into the ocean were discussed and proposed for further development in future.