Biogas production from agricultural wastes

‘Biogas’ is the word used to denote the mixtures of methane and carbon dioxide produced by bacterial action, in vitro, on various organic substrates. In vitro’, because similar mixtures of methane and carbon dioxide are formed by essentially the same bacterial actions in the gut of animals (in particular the rumen and similar organs of the herbivore gut; see previous papers) and in decaying vegetation in marshes and river beds.