Well, we're adding a bit over 30 gigatonnes per year (33 last year). 4000 (tons) * 1.102 = 4408.000 (metric tonnes).
1 gigatonne = 1,000,000,000 metric tonnes
So each year we're emitting enough that this particular scale of capture would require:
33,000,000,000 / 4408 = ~7486388 years to remove.
All the vegetation, land, and ocean can absorb about 17 Gt CO2 per year (Currently. Of course massively burning forests or increasingly carbon saturated oceans are going to significantly impact this equation as things get worse.)
So this technology would need to get at least 16,000,000,000 / 4408 = 3629764 times more effective just to keep things from getting any worse. And even so, this still seems like one of the more hopeful options because artificial capture could potentially be scaled much higher using less space than vegetation, given enough renewable energy. But even more efficient is simply emitting less carbon.
33,000,000,000 / 4408 = ~7486388 years to remove.
All the vegetation, land, and ocean can absorb about 17 Gt CO2 per year (Currently. Of course massively burning forests or increasingly carbon saturated oceans are going to significantly impact this equation as things get worse.)
So this technology would need to get at least 16,000,000,000 / 4408 = 3629764 times more effective just to keep things from getting any worse. And even so, this still seems like one of the more hopeful options because artificial capture could potentially be scaled much higher using less space than vegetation, given enough renewable energy. But even more efficient is simply emitting less carbon.