Premium
The fate of CO 2 hydrate released in the ocean
Author(s) -
Teng H.,
Yamasaki A.,
Shindo Y.
Publication year - 1999
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/(sici)1099-114x(19990325)23:4<295::aid-er478>3.0.co;2-d
Subject(s) - hydrate , clathrate hydrate , seawater , sink (geography) , dissolution , decomposition , deep sea , geology , chemical engineering , chemistry , environmental science , oceanography , organic chemistry , engineering , cartography , geography
Disposal of anthropogenic CO 2 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 2 into denser CO 2 hydrate via a submerged hydrate crystallizer at a depth <500 m. The fate of CO 2 hydrate in the ocean has been investigated. It is shown in this study that hydrate particles released in the ocean are physicochemically unstable; however, hydrate decomposition occurs only as a surface phenomenon. Because CO 2 hydrate is denser than seawater, hydrate particles will sink in the ocean. During the descending process, the hydrate particles dissolve gradually in seawater owing to decomposition occurring continuously at surfaces of hydrate particles. This dissolution fate of CO 2 hydrate in the ocean is significantly different from the previous prediction that the disposed CO 2 hydrate would exist as a long‐lasting entity in the ocean. Copyright © 1999 John Wiley & Sons, Ltd.