Prediction of hydrogen sulphide production during anaerobic digestion of organic substrates
2012
Peu, Pascal | Picard, S. | Diara, Arnaud | Girault, R. | Béline, Fabrice | Bridoux, G. | Dabert, P. | Gestion environnementale et traitement biologique des déchets (UR GERE) ; Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA) | Université européenne de Bretagne - European University of Brittany (UEB) | SAUR
[Departement_IRSTEA]Ecotechnologies [TR1_IRSTEA]TED [Axe_IRSTEA]TED-EPURE
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Mostrar más [+] Menos [-]Inglés. 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 29.6mgS/kg of total solids, and 66% of the feedstocks analysed contained less than 5mgS/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 2S in the raw biogas. A model to link H 2S 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).
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