<![CDATA[Grist - Comment Feed for Government report criticizes U.S. plans for carbon dioxide burial]]> Grist Comment Feed en Comment #1 by GRLCowan http://www.grist.org/article/gao1/ Tue, 21 Oct 2008 04:28:45 -0700 http://www.grist.org/article/gao1/1 However elaborate, this is all strawman-bashing

The significant CCS possibility is not end-of-pipe capture and burial but capture from plain air and surface storage.

--- G.R.L. Cowan, author of How fire can be tamed

]]> However elaborate, this is all strawman-bashing

The significant CCS possibility is not end-of-pipe capture and burial but capture from plain air and surface storage.

--- G.R.L. Cowan, author of How fire can be tamed

]]> Comment #2 by sindark http://www.grist.org/article/gao1/ Tue, 21 Oct 2008 07:22:26 -0700 http://www.grist.org/article/gao1/2 Alternative CCS

"Surface storage?"

Storage where? In what form? Blocks of dry ice in huge pressurized warehouses?

a sibilant intake of breath

]]> Alternative CCS

"Surface storage?"

Storage where? In what form? Blocks of dry ice in huge pressurized warehouses?

a sibilant intake of breath

]]> Comment #3 by David Roberts http://www.grist.org/article/gao1/ Tue, 21 Oct 2008 07:39:53 -0700 http://www.grist.org/article/gao1/3 Oh god

Don't get him started. It's not enough we already hear about this in half the threads?

grist.org

]]> Oh god

Don't get him started. It's not enough we already hear about this in half the threads?

grist.org

]]> Comment #4 by davidzet http://www.grist.org/article/gao1/ Thu, 23 Oct 2008 02:32:01 -0700 http://www.grist.org/article/gao1/4 CCS is another form of geo-engineering

...and just as mistaken.

It's cheaper to emit less than grab it once emitted.

]]> CCS is another form of geo-engineering

...and just as mistaken.

It's cheaper to emit less than grab it once emitted.

]]> Comment #5 by Pangolin http://www.grist.org/article/gao1/ Thu, 23 Oct 2008 07:48:05 -0700 http://www.grist.org/article/gao1/5 We could use wind turbines....

to power the CCS process. It would work since they wouldn't need to work all the time but only when the plants were burning lots of coal.
_
_
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_
.
Joking, just joking. Mimicking the CCS proponents logical processes.

Put the Carbon Back







]]> We could use wind turbines....

to power the CCS process. It would work since they wouldn't need to work all the time but only when the plants were burning lots of coal.
_
_
_
_
.
Joking, just joking. Mimicking the CCS proponents logical processes.

Put the Carbon Back







]]> Comment #6 by dobermanmacleod http://www.grist.org/article/gao1/ Thu, 23 Oct 2008 15:08:51 -0700 http://www.grist.org/article/gao1/6 "Beware of the scale"

Vaclav Smil, an energy expert at the University of Manitoba, has estimated that capturing and burying just 10 percent of the carbon dioxide emitted over a year from coal-fire plants at current rates would require moving volumes of compressed carbon dioxide greater than the total annual flow of oil worldwide -- a massive undertaking requiring decades and trillions of dollars. "Beware of the scale," he stressed."

Anyone who advocates CCS is not taking into consideration of the scale.  We don't have trillions of dollars nor decades, since melting methane hydrate will soon overwhelm any likely cuts we make:

A frozen peat bog in western Siberia the size of France and Germany put together contains about 500 billion tons of carbon. Western Siberia has warmed faster than almost anywhere else on the Earth, with an increase in average temperature of about 3C in the last 40 years.

Even more Siberian permafrost is under the ocean, an area six times the size of Germany containing about 540 billion tons of carbon. That submarine permafrost is perilously close to thawing. Three to 12 kilometers from the coast the sea sediment is just below freezing. The permafrost has grown porous, there is a loss of rigor in the frozen sea floor, and the surrounding seawater is highly oversaturated with solute methane.

]]> "Beware of the scale"

Vaclav Smil, an energy expert at the University of Manitoba, has estimated that capturing and burying just 10 percent of the carbon dioxide emitted over a year from coal-fire plants at current rates would require moving volumes of compressed carbon dioxide greater than the total annual flow of oil worldwide -- a massive undertaking requiring decades and trillions of dollars. "Beware of the scale," he stressed."

Anyone who advocates CCS is not taking into consideration of the scale.  We don't have trillions of dollars nor decades, since melting methane hydrate will soon overwhelm any likely cuts we make:

A frozen peat bog in western Siberia the size of France and Germany put together contains about 500 billion tons of carbon. Western Siberia has warmed faster than almost anywhere else on the Earth, with an increase in average temperature of about 3C in the last 40 years.

Even more Siberian permafrost is under the ocean, an area six times the size of Germany containing about 540 billion tons of carbon. That submarine permafrost is perilously close to thawing. Three to 12 kilometers from the coast the sea sediment is just below freezing. The permafrost has grown porous, there is a loss of rigor in the frozen sea floor, and the surrounding seawater is highly oversaturated with solute methane.

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