are you sure you can "easily" get a usable oil from this strain?
"Easily" = extraction with affordable means for an individual, that is to say no lab stuff ...
As your friend is working on it, I think you can have methods about it.
No, today I have only vague ideas about it. I imagine that some have already thought about it. Is the crank centrifuge thing hopeless?
the guy who works on it is not reachable and I don't see him often.
b) I strongly advise against direct bubbling with exhaust gases, especially gasoline: it would pollute your environment (benzene and others ...) and kill algae. With diesel it would be a little less worse but soot would be a problem. In addition, you will be at best at 15% CO2 ... so far from "pure" CO2.
For CO2, I think recovering a small part of the gases at the end of the exhaust (less pollutant) and cooling by a long copper tube for example.
So for soot and particles, I thought it would condense in the cooler tube. But it might be necessary to add a bubbler which retains all of this before cultivation.
c) we could reflect together on a method of extracting and purifying CO2 from exhaust gases. For example by capturing it in water (dissolved) and releasing it later under a bell. This would no doubt allow you to remove most of the pollutants and concentrate the CO2.
Do you have a precise idea of how to capture CO2?
Problem: you will have to burn fuel to make fuel ...
Why do you say that?
electronics:
1st, 2nd and 3rd generation biofuels constitute a total deadlock in environmental, health and economic terms.
The fact that this technique has a poor performance does not prove that it is a dead end.
And then you don't talk about how solar panels are made.