Critical conditions CO2 hydrate films to rest on submarine CO2 pond surfaces: A mechanistic study

Ryo Ohmura, Yasuhiko H. Mori

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

The stability of hydrate films formed at the horizontal interface between seawater and denser liquid CO2 under high pressures (≤35 MPa) is considered to have an insight into the feasibility of the disposal/storage of liquid CO2 in the deep oceans. Hydrate films formed at the interface (i.e., the surface of a liquid CO2 pond on the seabed) may be denser than both liquid CO2 and seawater, may be denser than seawater but lighter than liquid CO2, or may be lighter than both liquids depending on the ambient pressure (i.e., the depth of the interface) and also on the fractional occupancy of hydrate crystalline cavities by CO2 molecules. The static force balance between the gravitational forces and the interfacial tension force acting on each hydrate film is formulated, thereby predicting the critical condition beyond which the film may sink into the CO2 pond or buoy up into the sea, or it may be broken due to an internal stress.

Original languageEnglish
Pages (from-to)1120-1127
Number of pages8
JournalEnvironmental Science and Technology
Volume32
Issue number8
DOIs
Publication statusPublished - 1998 Apr 15

Fingerprint

Ponds
Hydrates
pond
liquid
Liquids
Seawater
seawater
Surface tension
Residual stresses
cavity
Crystalline materials
Molecules
ocean

ASJC Scopus subject areas

  • Environmental Science(all)
  • Environmental Chemistry
  • Environmental Engineering

Cite this

Critical conditions CO2 hydrate films to rest on submarine CO2 pond surfaces : A mechanistic study. / Ohmura, Ryo; Mori, Yasuhiko H.

In: Environmental Science and Technology, Vol. 32, No. 8, 15.04.1998, p. 1120-1127.

Research output: Contribution to journalArticle

@article{26b13732cb7549118c5e1044d1ba0345,
title = "Critical conditions CO2 hydrate films to rest on submarine CO2 pond surfaces: A mechanistic study",
abstract = "The stability of hydrate films formed at the horizontal interface between seawater and denser liquid CO2 under high pressures (≤35 MPa) is considered to have an insight into the feasibility of the disposal/storage of liquid CO2 in the deep oceans. Hydrate films formed at the interface (i.e., the surface of a liquid CO2 pond on the seabed) may be denser than both liquid CO2 and seawater, may be denser than seawater but lighter than liquid CO2, or may be lighter than both liquids depending on the ambient pressure (i.e., the depth of the interface) and also on the fractional occupancy of hydrate crystalline cavities by CO2 molecules. The static force balance between the gravitational forces and the interfacial tension force acting on each hydrate film is formulated, thereby predicting the critical condition beyond which the film may sink into the CO2 pond or buoy up into the sea, or it may be broken due to an internal stress.",
author = "Ryo Ohmura and Mori, {Yasuhiko H.}",
year = "1998",
month = "4",
day = "15",
doi = "10.1021/es9700764",
language = "English",
volume = "32",
pages = "1120--1127",
journal = "Environmental Science & Technology",
issn = "0013-936X",
publisher = "American Chemical Society",
number = "8",

}

TY - JOUR

T1 - Critical conditions CO2 hydrate films to rest on submarine CO2 pond surfaces

T2 - A mechanistic study

AU - Ohmura, Ryo

AU - Mori, Yasuhiko H.

PY - 1998/4/15

Y1 - 1998/4/15

N2 - The stability of hydrate films formed at the horizontal interface between seawater and denser liquid CO2 under high pressures (≤35 MPa) is considered to have an insight into the feasibility of the disposal/storage of liquid CO2 in the deep oceans. Hydrate films formed at the interface (i.e., the surface of a liquid CO2 pond on the seabed) may be denser than both liquid CO2 and seawater, may be denser than seawater but lighter than liquid CO2, or may be lighter than both liquids depending on the ambient pressure (i.e., the depth of the interface) and also on the fractional occupancy of hydrate crystalline cavities by CO2 molecules. The static force balance between the gravitational forces and the interfacial tension force acting on each hydrate film is formulated, thereby predicting the critical condition beyond which the film may sink into the CO2 pond or buoy up into the sea, or it may be broken due to an internal stress.

AB - The stability of hydrate films formed at the horizontal interface between seawater and denser liquid CO2 under high pressures (≤35 MPa) is considered to have an insight into the feasibility of the disposal/storage of liquid CO2 in the deep oceans. Hydrate films formed at the interface (i.e., the surface of a liquid CO2 pond on the seabed) may be denser than both liquid CO2 and seawater, may be denser than seawater but lighter than liquid CO2, or may be lighter than both liquids depending on the ambient pressure (i.e., the depth of the interface) and also on the fractional occupancy of hydrate crystalline cavities by CO2 molecules. The static force balance between the gravitational forces and the interfacial tension force acting on each hydrate film is formulated, thereby predicting the critical condition beyond which the film may sink into the CO2 pond or buoy up into the sea, or it may be broken due to an internal stress.

UR - http://www.scopus.com/inward/record.url?scp=0032523053&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032523053&partnerID=8YFLogxK

U2 - 10.1021/es9700764

DO - 10.1021/es9700764

M3 - Article

AN - SCOPUS:0032523053

VL - 32

SP - 1120

EP - 1127

JO - Environmental Science & Technology

JF - Environmental Science & Technology

SN - 0013-936X

IS - 8

ER -