title: Prediction of hydrogen sulphide production during anaerobic digestion of organic substrates.
abstract: The main objective of this study was to develop a methodology to predict the hydrogen sulphide content of raw biogas produced during anaerobic mono-digestion of a bioenergy feedstock. Detailed chemical and biological analyses were made on 37 different feedstocks originating from urban wastewater treatment plants, farms, agri-food facilities and municipal wastes. Total sulphur content ranged from 1 to 29.6 mg S/kg of total solids, and 66% of the feedstocks analysed contained less than 5 mg S/kg of total solids. The biochemical methanogenic potential and biochemical biogas potential of each feedstock combined with its S content were used to predict appearance of H(2)S in the raw biogas. A model to link H(2)S in biogas with the carbon:sulphur ratio was established. Based on this model, a minimum carbon:sulphur ratio of 40 is required in feedstock to limit the concentration of hydrogen sulphide in raw biogas to less than 2% (volume/volume).
authors.affiliation: IRSTEA, UR GERE, 17 Avenue de Cucillé, CS 64427, F-35044 Rennes, France. pascal.peu@irstea.fr
authors.forename: Pascal
authors.initials: P
authors.lastname: Peu
authors.forename: Sylvie
authors.initials: S
authors.lastname: Picard
authors.forename: Arnaud
authors.initials: A
authors.lastname: Diara
authors.forename: Romain
authors.initials: R
authors.lastname: Girault
authors.forename: Fabrice
authors.initials: F
authors.lastname: Béline
authors.forename: Gilbert
authors.initials: G
authors.lastname: Bridoux
authors.forename: Patrick
authors.initials: P
authors.lastname: Dabert
mesh_terms: D001421:Bacteria, Anaerobic / Q000378:metabolism*; D056804:Biofuels / Q000032:analysis*; D019149:Bioreactors; D002244:Carbon / Q000032:analysis; D005602:France; D006862:Hydrogen Sulfide / Q000032:analysis* / Q000378:metabolism; D008954:Models, Biological; D012722:Sewage / Q000032:analysis; D013455:Sulfur; D014866:Waste Products / Q000032:analysis*
chemical_list: D056804:Biofuels; D012722:Sewage; D014866:Waste Products; D013455:Sulfur; D002244:Carbon; D006862:Hydrogen Sulfide