Trouble with techies is they tend plumb for techie solutions like carbon capture aka ClimeWorks rather than low tech options like trees or seagrass
The carbon they latch onto and temporarily hold onto is still within the land / sea surface +/- a few metres layer.
The current largest scale carbon capture projects are catching a small amount of vented CO2 from LNG projects and pushing that back into the subsurface fields - they only capture 10 ton by releasing over a 100.
We're in need of readily powered true air capture of CO2 then sequestered deep underground.
Things like www.sciencedirect.com/science/article/pii/S036031992602269X have promise.
You can find examples here on Frontier's site of companies that are taking biomass (plant stuff like tree waste) and sequestering it in mines or other storage deep underground.
When thinking about sucking carbon from the sky, I find it useful to separate how I think about grabbing on to carbon dioxide from how to store carbon dioxide, rather than thinking of it as one step. I find it's easy to get lost and either over or undervalue things otherwise.
Plants and trees are excellent at grabbing on, for example, and with a good process they can lead to very cheap methods to store/remove carbon dioxide for a thousand years.
How it's stored (and the energy used to store) matters. As you know - there's not much to argue about here, just a nod that it's best to be careful with words.
As a further question, what's the most effective Direct Air Capture method actually working on your books so far, in terms of greatest tonnages, and where is that captured CO2 being stored.
Generally I’m skeptical of Carbon Capture and Storage schemes (and Hydrogen) as it’s a way for oils and gas companies to delay the transition to cleaner energy
IMV hydrogen does have something of place in industrial processes e.g. reduction of iron ore, and maybe fuel cells but not for general combustion
Marine carbon removal: 16
Biomass carbon removal & storage: 13
Direct air capture: 12
Field weathering: 8
Mineralization: 8