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How one company plans to suck carbon right out of the air (and make money doing it) (www.cbc.ca)

submitted 2 days ago by otters_raft to c/buycanadian

41 comments fedilink hide all child comments

The roughly two-hectare facility, still under construction, is hosting what could be called a carbon removal Olympics. It will pilot eight different versions of a similar technology using various machines that will suck in air, remove the carbon dioxide and send it to a central plant where it will be compressed and liquified for storage deep underground.

The winner of this initiative wouldn't get a medal on a podium. Instead, Deep Sky, the Montreal-based project developer behind it, plans to take the best versions of the direct air capture technology that prove most effective in Canada's climate and deploy them on a commercial scale all over the country.

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[–] nik282000 19 points 2 days ago (1 children)

Can't be done. Takes more energy to capture carbon than is released when you burn it. At best we stop burning fossil fuels and use capture mechanisms that run on renewables (like trees, provided that the wood is then stored in such a way that it never rots or breaks down).

[–] [email protected] 7 points 1 day ago* (last edited 1 day ago) (1 children)

Hemp grows fast, and captures 10 times the amount of carbon as the same acreage of trees. Stores about 85% in the roots too. Marijuana also does similar, but IIRC not quite as much as hemp. Plant them, harvest 4 times a year. Take all the roots, and put them into a compacter. Dump roots in the Marianas trench. Should keep that carbon sequestered for a few hundred million years.

[–] nik282000 9 points 1 day ago (1 children)

Except they will rot down there and release methane and CO2. Stopping emissions is step 0 of this process, then we have to find a way to re-fossilize captured carbon.

[–] [email protected] 1 points 22 hours ago* (last edited 22 hours ago)

Not going to rot that far down under the water. Perpetually cold water + pressure does weird things to land dwellers.