Energy recovery from used disposable diapers by co-digestion with waste activated sludge
| Autor: | Torrijos, Michel, Sousbie, Philippe, Rouez, M, Lemunier, M, Lessard, Y, Galtier, L, Simao, A, Steyer, Jean-Philippe |
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| Přispěvatelé: | Laboratoire de Biotechnologie de l'Environnement [Narbonne] (LBE), Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Centre International de Recherche Sur l'Eau et l'Environnement [Suez] (CIRSEE), SUEZ ENVIRONNEMENT (FRANCE), SITA UP, Partenaires INRAE, International Water Association (IWA). IWA Anaerobic Digestion Specialist Group, INT., ProdInra, Migration |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | 13. World Congress on Anaerobic Digestion: Recovering (bio) Resources for the World. AD13 13. World Congress on Anaerobic Digestion: Recovering (bio) Resources for the World. AD13, International Water Association (IWA). IWA Anaerobic Digestion Specialist Group, INT., Jun 2013, Santiago de Compostela, Spain. 171 p |
| Popis: | International audience; The results presented in this paper are part of a project aimed at designing an original solution for the treatment of used disposable diapers permitting the recycling of materials and the recovery of energy. Diapers must be collected separately at source and transported to an industrial facility to undergo special treatment which makes it possible to separate plastics and to recover a biodegradable fraction (BFD) made up mainly of cellulose. The methane yield of BFD was measured and found to be 280 ml CH4/g VSfed on average. 150 kg of dry BFD can be retrieved from the treatment of one ton of used disposable diapers, representing an energy potential of about 400 kWh of total energy or 130 kWh of electricity. As the treatment process for used diapers requires very high volumes of water, the setting up of the diaper treatment facility at a wastewater treatment plant already equipped with an anaerobic digester offers the advantages of optimizing water use as well as its further treatment and, also, the anaerobic digestion of BFD. The lab-scale experiments in a SBR showed that BFD co-digestion with sewage sludge (38% BFD and 62% WAS on VS basis) was feasible. However, special attention should be paid to problems that might arise from the addition of BFD to a digester treating WAS such as insufficient mixing or floating particles leading to the accumulation of untreated solids in the digester. |
| Databáze: | OpenAIRE |
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