[B-Chan]

Leaving the algae alone would do no good. Eventually the algae die and are digested by bacteria, which release the CO₂ as waste gas.

The only way to permanently sequester CO₂ from the carbon cycle is to separate the carbon atom in each molecule from the oxygen atoms and process it into a non-oxidizing form such as diamond or fullerene.

[11th Commandment]

I understand- it was a little tongue and cheek. Algae diesel does not violate the laws of chemistry....

[PapaBear3625]

Leaving the algae alone would do no good. Eventually the algae die and are digested by bacteria, which release the CO2 as waste gas.

Unless it was marine algae which sank to the bottom of the sea. In the dark, cold, oxygen-poor environment of the ocean floor, it would eventually be covered with sediment, and be turned into coal or oil a few hundred million years from now

In the iron-poor antarctic waters, all you would need is seed the water with rust to produce an algae bloom