Piping in CO2 is moronic and designed to make the algae to oil scheme sound sexier. A bigger deal. Like it’s a carbon sequestration scheme. Hey, burn coal nearby to make electric and pipe in the CO2 to these racks with algae bags on them. That kind of nonsense
I agree, the algae is going to use up CO2 whether you pipe it in or not. That just seems like a waste of money, unless the accelerated algal growth (and thus, the yield over time) is worth the expense of the infrastructure.