Prediction of hydrogen sulphide production during anaerobic digestion of organic substrates

► Feedstock used in anaerobic digesters could generate a high level of hydrogen sulphide into the biogas. ► Sulphur content of feedstock is variable with a low level for most of them. ► Hydrogen sulphide biogas content could be predicted with only feedstock analyses. ► Feedstock with carbon:sulphur ratio under 40 present a risk for their use in anaerobic digestion.