Translations:Biodigesteur domestique/105/en

In acid medium, the enzymatic activity of the bacterias is inhibited. This acidity is mainly due to organic acids accumulation. In basic medium, fermentation produce hydrogen sulphide (H2S) and hydrogen (H2). Digestion can take place between pH of 6,6 and 7,6, with an optimum between 7 and 7,2.