The size of the bioreactor chamber is only one factor --- the nature of the biomass, the "H" present in its formula, type of bacteria used, the speed of the bacterial process, and the sizing of the downstream equipment necessary for converting generated hydrogen to usable hydrogen are all factors that make any statement of bioreactor size subject to misinterpretation at present.
An example of how difficult it is to state the size of bioreactor for a given production volume is this:
Contrast the scenarios in which the process of biomass breakdown takes six hours in one instance with one in which it takes fifteen minutes, with the biomass type being the same in both cases --- both times are easily conceivable, given what is known about bacteria and microbiology, but the fifteen-minute scenario would treat twenty-four times the volume of the first scenario in the six hours. That would be done using the same size bioreactor, but the downstream equipment would have to be upgraded to handle the increased volumes and pressures generated by the rapid process. The resulting volume would be H2*24 and the increased pressures on the bioreactor chamber along with the loads on the downstream treating equipment would be significantly greater from those in which the process took six hours.
I would wager that all of these factors, and more, are being considered by the people at Nanologix, and that they are looking at the most efficient means for H2 generation and will size bioreactors accordingly.
I hope this helps.
EiK
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