[BizarroLand]

Since the powder is reusable, it likely wouldn't make sense to sequester it with the CO2 either materially or financially.

[entropicdrifter]

This. The powder is more efficiently used as a way to move the CO2 around than as a means to keep it sequestered.

[Woodi]

Still, tree produce oxygen from that CO_2. And do not need energy from grid for that :)

Threating CO_2 like radioactive waste, putting it underground etc - that what I call not self-sustained :>