New Material Can Scrub Carbon Dioxide Right Out of the Air at Unprecedented Rates, page

Researchers claim this can scrub carbon dioxide emitted straight from the source, at unprecedented rates, be it an industrial smokestack or a car’s exhaust pipe and even the air. And it's reusable.

" Scientists are reporting discovery of an improved way to remove carbon dioxide -- the major greenhouse gas that contributes to global warming -- from smokestacks and other sources, including the atmosphere. Their report on the process, which achieves some of the highest carbon dioxide removal capacity ever reported for real-world conditions where the air contains moisture. "

Source / Alternative source

If cleaning carbon dioxide from the atmosphere was easy, we’d already be doing it. But carbon capture has proven to be a tough technology to feasibly roll out on a grand scale, and that means all the things we do that produce carbon dioxide emissions--which seems to be just about everything these days--are still roughly as bad for the planet as they were several years ago. That’s a problem in a warming world, and one that a team of researchers may have just found a solution for via an inexpensive polymeric material.

Originally posted by Daedal
Source / Alternative source

I was wondering how the extracted CO2 would be sequestered, but the article doesn't say:

After capturing carbon, the material also gives it up easily so it can be sequestered or recycled through the manufacture of other substances.

Even if it's extracted, and sequestering is as simple as pumping it into a storage tank, how many storage tanks will we need to have any impact?

However, this is interesting news, thanks for sharing it.

reply to post by Arbitrageur

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Could always convert it to dry ice and drop into the frozen depths of the ocean or take it somewhere like Antarctica where it should be just fine, unless the earth's poles relocate.

Originally posted by Flatfish
reply to post by Arbitrageur

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Could always convert it to dry ice and drop into the frozen depths of the ocean or take it somewhere like Antarctica where it should be just fine, unless the earth's poles relocate.

How about giving it to hydroponic farmers to utilize for food production...

reply to post by Arbitrageur

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It'd be handy if we could break the Carbon from the Oxygen and go from there.

New fresh oxygen, and carbon for our carbon technology!

Originally posted by Flatfish
Could always convert it to dry ice and drop into the frozen depths of the ocean or take it somewhere like Antarctica where it should be just fine, unless the earth's poles relocate.

Who starred your post?

You need to read up on dry ice. It would not be just fine in Antarctica, it's not consistently cold enough there to keep dry ice frozen. If you dropped it into the ocean it would sublimate before it could reach any frozen depths.

Sounds like you need to read up on dry ice: en.wikipedia.org...

reply to post by Arbitrageur

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a dry ice collector bag over a Co2 tank requires energy? i think if one was so inclined with a few resources and a little experimentation, one could create energy with dry ice, and make it cost effective

www.dryiceinfo.com...

reply to post by sweetnlow

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I didn't say you can't make energy once you have the dry ice.

I said it takes energy to make the dry ice. So there's a net energy loss.

This is basically the same fundamental law of physics that applies when you try to run your car on water.

Yes you can split H2O into H2 and O2, and yes you can make energy by recombining them. But there's a net energy loss, not a gain.

Same with your proposal. The extracted CO2 in the OP subject is on a polymer film. It's not really a viable source of energy in that format.

reply to post by Arbitrageur

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no probably not

Originally posted by Arbitrageur

Originally posted by Daedal
Source / Alternative source

I was wondering how the extracted CO2 would be sequestered, but the article doesn't say:

After capturing carbon, the material also gives it up easily so it can be sequestered or recycled through the manufacture of other substances.

Even if it's extracted, and sequestering is as simple as pumping it into a storage tank, how many storage tanks will we need to have any impact?

However, this is interesting news, thanks for sharing it.

Polyethylene imine has been around for this application for years. The work cited is based on many previous papers in the literature so this is not a new material; just a new formulation, if that. No basic material easily gives up CO2. The advantage to this type of material is that it is not an aqueous solution, like many traditional sorbents [e.g., ethanolamine] and so does not have the energy penalties associated with boiling water. In any of these sorbents, one has to balance the strength of binding with the ease of removal and recycle. The stronger and more completely the CO2 is bound, the more difficult and expensive it is to remove. The easier it is to remove captured CO2, the less CO2 it would capture. A 'goldilocks' sorbent would be reasonably good at capture without excess penalties of rejuvenation. It would be stable over many cycles of sorption-desorption and be relatively inexpensive to operate.
The possibilities of sequestration of CO2 are generally limited to injection into deep saline aquifers. Ocean disposal is not a good option for many reasons. One of them is formation of a CO2 hydrate [hydrates are stable combinations of ice and a gas that can form below the normal freezing point of water]. The problem is not so much the hydrate, but the heat released when it forms. When water warms, it rises. Ocean currents are not understood well enough to ensure that any disruption would be reversible. The risk of permanently changing the ocean currents and world climates is too great to risk ocean disposal. Any disruption of a metastable current anywhere could have permanent unintended consequences at unpredictable locations elsewhere.
With deep saline aquifer injection, the CO2 would be well below any useful aquifer. At those depths, the CO2 would have to be compressed to the point that it would likely be a fluid when injected. Technically, this is doable, although it would roughly double the cost of electricity to the consumer and seriously reduce the GNP of any nation that chose to do this. The big problem is one of legality and liability and that problem is what will prevent geological sequestration from ever being widespread. Because the CO2 is a liquid and a waste material, RCRA laws will apply, unless exceptions are made. Further, mineral and property laws come into effect if the gas crosses a property line and remediation of gas finding a fissure may not be possible. Long term monitoring will be required and the results made available. Should that sequestration be done under the seabed instead of on land where gas and mineral rights end at a property line, the expense will be so great that it will not be possible to do at any useful scale.
Don't expect sequestration at any significant scale anytime soon.

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