Demonstration of the possibility to power a fuel cell with hydrogen derived from the fermentation of sugar

Expression of different types of [FeFe]-hydrogenase genes in bacteria isolated from a population of a bio-hydrogen pilot-scale plant

“…This value is interestingly higher in comparison to previously published percentages, typically in the range 20-40% [44,45].…”

Biological Hydrogen Production by Dark Fermentation in a Stirred Tank Reactor and Its Correlation with the pH Time Evolution

“…Equation ( 13) relates the cumulated hydrogen production to the function ( f H ), which is entirely obtained from the pH curve. The parameters can be obtained from a nonlinear fitting or, since the modified Gompertz model is a bi-exponential function, an exponential fitting over a semi-log plot of the f H function vs. time, starting after the lag phase, can be obtained, as indicated in Equation (16).…”

“…This gas mixture has been evaluated by chromatography and has shown to be composed of only these two gas species, with a 60-70% proportion of H 2 . The authors developed a new quantitative method to estimate the proportions of these gases in previous work [16]. It has been shown that using a syringe with a known volume of gas mix and consuming the H 2 in a highly selective proton-exchange membrane (PEM) fuel cell leaves only the volume of CO 2 , which can be directly read with the syringe.…”

“…The gas mixture can be easily collected and used as a green energy vector. Although it can be stored, in situ consumption for feeding an onboard proton exchange membrane (PEM) fuel cell is an attractive alternative [16]. Moreover, it can also be devised for being used in hydrogenation processes, if any is carried out on board.…”