this post was submitted on 31 May 2025
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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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[–] Thedogdrinkscoffee 26 points 5 days ago* (last edited 5 days ago) (24 children)

So far DACC is a scam. The energy costs to capture carbon have always proven near as high or higher than the energy gained from burning fossil fuels. It's always been unviable and treating any of it as anything but research projects is 100% bs.

Fossil fuel companies have vested interests in perpetuating the myth that we can clean up our mess after the fact. Think about how insane this proposition is! How can a world that has to drastically reconfigure itself to run on a renewables eroei of roughly 3 to 1, find the surplus energy to recapture capture carbon when the 100:1 eroei of fossil fuels are no longer available? The superorganism known as human civilization won't have the surplus energy to handle its own metabolic needs and recapture carbon.

A surface gusher of light sweet crude used to give 100:1. The last 30 years have seen eroei decline from 30-1 to 18-1 today as an average with tight oil going as low as 5-1.

This article is false hope. Sickly sweet paliative medicine given to terminal patients. There there dear. Your suffering will soon be over and everything will be beautiful again in the afterlife.

[–] BCsven -1 points 5 days ago (3 children)

Hopefully a nano tech evolves where carbon connects to a material and we somehow slough it of in stage 2 of the process

[–] nik282000 2 points 4 days ago (2 children)

We already have that nanotech, photosynthesis. A process perfected over billions of years to be as efficient as possible. It works so well that gigatons of carbon was captured and then trapped in underground.

The problem is that capturing carbon is literally un-burning it, by plant or by nanobot you have to rip the oxygen off of carbon and make sure they stay that way. That process consumes energy, it is working up hill against entropy. Burning carbon to form CO2 is downhill all the way, you give it a push and it's self sustaining.

Unless you have a power source that exceeds all fossil fuel burning processes, by like 10x, you can never capture carbon at a meaningful rate. (And if you DO have that 10x clean energy source, you already don't need to burn more carbon)

[–] BCsven 1 points 4 days ago

I don't mean biological process, I mean actual nano science, like fuel cell membrane that strips hydrogen on its own

[–] [email protected] 1 points 4 days ago

Evolution doesn't necessitate something to be "as efficient as possible".

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