 To fix a mole of carbon during the hydrogen oxidation, one third of the energy necessary for the sulphide oxidation is used.This is due to the redox potential of hydrogen, which is more negative than NAD (P)/H.Based on the amount of sulphide, hydrogen and other farm biotics, this phenomenon can be intensified leading, in some cases, to an energy production by oxidation of the hydrogen of 10 -18 times higher than produced one by the sulphide oxidation.