alt Hacker NewsReading Frontier’s website it’s very unclear how much they’re going to remove and how they’re going to do it - though there’s a lot of mentions of biomass
Trouble with techies is they tend plumb for techie solutions like carbon capture aka ClimeWorks rather than low tech options like trees or seagrass
Trees and seagrass don't really address the sequestration side though, do they?
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.