A good way is to put in on bio powered power plants. So you grow trees etc in dedicated areas, which remove co2 from the air. You harvest it for centrally burning for energy and co2 capture. In the meantime you grow new trees etc at the harvest locations. Do this at scale. It makes money, energy and results in a net co2 loss.

Obviously you can also make systems to do direct air capture, but that is much more expensive, you'll need wind turbines because of low co2 density in air, and it won't make money. So just using trees on large areas is probably hard to beat.