Re: FW: Sequestration / nuclear option

[Kai Kaletsch <eic@shaw.ca>]

John,



If this was permanent, wouldn't there be a lake of CO2 at the bottom of the

ocean right now? It would have gotten there from undersea volcanic activity.



My guess is that CO2 dissolves and diffuses to the surface.



Kai



From: "John Andrews" <andrewsjp@chartertn.net>



> Seems to me the deep sea injection of the liquid CO2 would be simpler

> and just as permanent.  Perhaps mechanically simpler, too.  As I

> understand it, the CO2 is liquified, then injected at a depth where the

> pressure is sufficient to keep it in liquid form.  It then sinks to the

> bottom because it is heavier than water.  It is an interesting concept.

>

> John Andrews

> Knoxville, Tennessee

>

> Keith.Millington@csiro.au wrote:

>

> > Hi Ruth,

> >

> > The sequestration strategy being considered in Australia is basically

> > to pump liquid CO2 from power stations deep underground into depleted

> > oil and gas reservoirs.

> > http://www.apcrc.com.au/Programs/geodisc_back.htm.  Apparently only

> > about half of the CO2 from fossil fuelled stations would be trapped,

> > the rest released to atmosphere as usual.

> >

> > This sounds to me like storing your waste forever - the same problem

> > faced by nuclear power, but increased several orders of magnitude in

> > waste volume !

> >

> > Keith

> >

> >

> >

>

>

>

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