โ Scribed by Yuji Shindo; Yuichi Fujioka; Hiroshi Komiyama
No coin nor oath required. For personal study only.
Liquid COz sequestration in a bathymetric depression a t depths greater than 3700 m in the ocean has been proposed as a mitigation strategy for the reduction of atmospheric COz emissions. Kinetic studies on the dissolution of COz from the liquid C02 pool, the diffusion in the ocean, and advection of COz by the bottom ocean current are carried out. A thin membrane of COz hydrate on the liquid COz pool controls the C02 dissolution into the overlaying seawater, the thickness of a static layer between the surface of liquid C02 and the upper bottom ocean current reduces the C02 diffusion, and the bottom ocean current dilutes the C02 concentration. These effects are explicitly formulated in an equation, and it is predicted that ocean COz sequestration a t a depth larger than 3700 m will greatly reduce the pH change caused by C02 dispersion in the ocean.
๐ SIMILAR VOLUMES
## Disposal of anthropogenic CO in the ocean has been considered as a method to counteract global warming. A desirable method of the ocean disposal is to convert the less dense liquefied CO into denser CO hydrate via a submerged hydrate crystallizer at a depth (500 m. The fate of CO hydrate in the