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Chuck Britton wrote:
Anytime we decide to, we can begin removing CO2 from the atmosphere
and quickly return the CO2 levels back to preindustrial levels.
From the atmosphere? Really?
CO2 can be liquefied quite easily.
How easily? At what cost? Removing it from the open
atmosphere (as opposed to a concentrated CO2 sample)?
> Storage needs to be considered.
Deep ocean trenches would give us the 'out-of-sight, out-of-mind'
advantage. Others are pursuing the idea of stuffing the liquid CO2
back into the gas wells from whence it came.
"Needs to be considered" and "pursuing" are not the words
normally associated with successful methods that can be
used "anytime we decide to".
Personally, I rather like the ocean idea (but someone will have to
convince us that the Lake Nyos thing is not likely to occur.)
The "Lake Nyos thing" seems rather worse than a fly in the
ointment.
=================
I did some googling just now.
*) I was unable to find any evidence that it is economically
feasible to separate CO2
-- from the open atmosphere,
-- from mobile sources (i.e. transportation), or
-- from small-scale sources (i.e. residential and industrial
heating).
*) I was unable to find any storage schemes that looked
safe in the long term and economically feasible.
If anybody knows of a serious feasible proposal, please let
us know. A pilot plant, perhaps?
Note that the envelope of economic feasibility is capped by
the cost of things like closed-carbon-cycle fuels (i.e. bio
fuels, as opposed to fossil-carbon fuels) and non-carbon
power sources (e.g. solar photovoltaic).