[Red Badger]

I’d assume that the organism uses the carbon for building its own structure reproducing itself.............

[thackney]

I would not make such an assumption.

It seems to me an article claiming a reduction in Carbon Dioxide output via this method would at least give a clue where the carbon goes.

If consumed by the organism, does it grow forever larger? Or does it cycle and die off. If it dies, what happens to the carbon as the organism breaks down.

This is the same fallacy of using trees as a carbon sink. Only if the lumber is harvest and forever kept intact is the carbon contained. If the wood eventually rots, the carbon is released as Carbon Dioxide.