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From: David Keith [ke...@ucalgary.ca]
Sent: Monday, June 20, 2011 8:18 PM
To: geoengineering@googlegroups.com
Cc: Rau, Greg
Subject: RE: [geo] Re: Deep ocean disposal
Greg
(Turning my attention back to this this d-list after a period of not looking at
it.)
We did engineering analysis on a c
Sure, if folks don’t mind me repeating this like a broken record.
For spontaneous conversion of point source CO2:
CO2 + H2O + CaCO3 ---> Ca^2+ + 2HCO3- ---> seawater alkalinity
This is simply carbonate weathering conducted in a power plant’s tail pipe,
similar to the reaction routinely used for S
Unclear how a discussion of methane and fracking got diverted to deep sea CO2
lakes, but if you are suggesting that CCS-captured CO2 be stored as pools in
the deep ocean (discussed at some length in Ken’s IPCC chapter:
http://www.ipcc-wg3.de/publications/special-reports/.files-images/SRCCS-Chapt
What with Mike's mentioning the recent earthquake off of Japan, are
folks on this list aware that the first real-world
methane hydrate mining project, funded by the Japanese government, was
set to begin about a month before the
quake/tsunami, in the Nankai trough, not all that far away, and run by
People have thought about liquid sealing layers before for CO2 lakes on the
bottom of the ocean, and I think the problem is that nobody has come up with
the right substance.
It needs to be:
1. between the density of seawater and liquid CO2 which is a pretty narrow
density range.
2. relatively unr
royalsociety.org/events/Bakerian2011/
>From memory ocean storage was pretty safe in theory. Co2 and water dissolve
together to create a mixture more dense than either.
The demo was pretty cool but I'm on my phone so I can't check if the video
is still up.
You can pester the lecturer for a YouTub
Andrew
The deep ocean seal I am postulating is a liquid with low miscibility
with both CO2 and sea water and a density between them. It should self
heal if punctured but could have quite a high viscosity. Whether or not
it will work depends only on current velocities. We need to know what
It's not that simple. This issue was covered at the royal society.
If reserves are deep enough, they will be kept stable by pressure. As long
as they're not perturbed and don't diffuse into anything, you should be ok.
If you're relying on pressure containment, then fracking is a problem.
However,
Michael writes in an earlier email that "These are the same oil fields
that are being proposed for massive CO2 geological storage. Fracking
is rapidly taking that option off the table." I know a little about
CCS but not much about fracking - if this is a zero-sum game then
we've got a problem. Oi
