Fig. 3
From: The effects of CO2 and H2 on CO metabolism by pure and mixed microbial cultures
Electron distribution (%) from electron donorsa to acetate, ethanol, and/or H2 produced in fermentation of CO and mixtures of CO with CO2 and/or H2 by (a) the CO-enriched mixed culture, (b) the Acetobacterium-like isolate, and (c) the Pleomorphomonas-like isolate. The data are averages with standard deviation of triplicates. The electron balance in (a) corresponds to day 21, and in (b, c) to the last day of fermentation. aCO, H2, and/or yeast extract (YE), and initial concentration of organic matter. *Distribution of electrons to H2 includes H2 produced and not consumed. e− meq.: electron milliequivalent