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adrianNyesterday at 4:49 PM3 repliesview on HN

It’s difficult to scale this to the levels we would need to make a difference.


Replies

deepsunyesterday at 8:48 PM

Yes, agree. But I'm not sure direct air capture is more scalable than trees. Yes trees need to be moved, but at least they grow by themselves.

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zdragnaryesterday at 5:05 PM

Depending on the tree, freshly cut wood can have anywhere from 1:3 to 2:1 ratio of water to actual wood fiber.

So, unless we want to remove a massive amount of fresh water from the ecosystem, we also need to invest energy in drying out the wood well below natural humidity levels (transport to a desert maybe?) on top of electrifying what is currently a diesel and gas heavy industry (cutting and transporting logs with heavy machinery).

There's definitely lower hanging fruit for getting C02 out of the cycle.

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lazideyesterday at 4:56 PM

The more likely candidate is mineral based, because yes trees are hard to scale this way.