[null and void]

Now to produce enough algae to make it economically doable — that’s the question.

Grow it on sewage.

[Fred Hayek]

Grow it on sewage.

Actually a good initial application. Then the process can be improved further. If the cost benefit in fuel production is only slightly better than crude refining, but as a method of waste treatment is cost effective, then consider the extracted oil to be a byproduct stream - still a revenue stream to recoup the cost of sewage treatment.

Anyhow, the oil from algae is about on the level of light sweet crude.