Basic experimental results of liquid CO/sub 2/ injection into the deep ocean

CO/sub 2/ disposal in the deep ocean is expected to be an effective option for mitigating the increase in CO/sub 2/ on the earth. The authors have investigated the behaviour of liquid CO/sub 2/ using test facilities which can simulate the pressure and temperature of the deep ocean. Phase equilibrium data of the CO/sub 2/-seawater system and the conditions of CO/sub 2/ clathrate formation were confirmed. In addition, the authors measured the pH value of seawater saturated with CO/sub 2/ at high pressure. The data presented in this paper are considered indispensable for evaluating the possibility of CO/sub 2/ disposal in the deep ocean.<
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