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Author Topic: Underwater CO2 Sequestration
dale cooper
Babbler # 2946

posted 16 April 2003 12:29 PM      Profile for dale cooper     Send New Private Message      Edit/Delete Post  Reply With Quote 
Does anyone know anything about underwater CO2 sequestration and its side effects? I know this much: CO2 is piped down into the ocean to a depth where it becomes more dense than water and stays put.

I'm wondering if it will have any effect on the ecology of the region it is plunked down into. Like would an extreme excess of CO2 down there alter the plant life or anything along those lines? Or do they put it down far enough so there is no life? Is there a place in the ocean down far enough for there to be no life?

From: Another place | Registered: Aug 2002  |  IP: Logged
Babbler # 490

posted 16 April 2003 12:38 PM      Profile for DrConway     Send New Private Message      Edit/Delete Post  Reply With Quote 
It would stimulate the growth of anaerobic bacteria (that is, bacteria whose metabolic functions don't depend on oxygen), and would over time lower the atmospheric pressure a bit by lowering the partial pressure of CO2 in the atmosphere.

I've also heard of methods of CO2 sequestration that involve using old natural-gas or oil wells as sinks for carbon dioxide. Trap the gas underground where it can't escape and it'll just sit there.

Interestingly enough, it appears that larger animal life-forms might be attracted to CO2-rich water, even though the dissolution of the acid anhydride produces carbonic acid in water and lowers the pH.

The EPA has a report on an application to test the sequestration method, only to have found substantial public opposition. The research group withdrew the application.

A graphical description of the process.

From: You shall not side with the great against the powerless. | Registered: May 2001  |  IP: Logged
Babbler # 1675

posted 16 April 2003 12:39 PM      Profile for redshift     Send New Private Message      Edit/Delete Post  Reply With Quote 
probably someone here does.


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From: cranbrook,bc | Registered: Oct 2001  |  IP: Logged

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