If I could make a wish, the first model of a CO2 separator would have to be built at the USA northwest within sovereign borders. It is there ocean acidification is measurable. If CO2 could be captured and converted in large enough measure it would change the physics along the west coast and possibly break the high pressure system off shore California. If that occurs there might be a measurable return to west to east wind of less dense CO2 across the nation providing relief to Midwest farming.
The Earth CO2 separator has to be substantial enough to begin the shift in reverse to the density. The facility could pay for itself. First it would be a plug and play facility using earth resources for energy and it could be monitored easily in use to enhance development and the ultimate model. But separating CO2, IF, O2 is the final product could produce carbon that could be pressured into the form of diamonds. They would not blood diamonds either.
Until tomorrow...