How to preserve the energy potential of organic residues during storage? Focus on anaerobic digestion
| Autor: | Teixeira Franco, Ruben, Buffière, Pierre, Bayard, Rémy |
|---|---|
| Přispěvatelé: | Déchets Eaux Environnement Pollutions (DEEP), Institut National des Sciences Appliquées de Lyon (INSA Lyon), Université de Lyon-Institut National des Sciences Appliquées (INSA)-Université de Lyon-Institut National des Sciences Appliquées (INSA), Teixeira Franco, Ruben |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Methane potential
[CHIM.GENI]Chemical Sciences/Chemical engineering Catch crop [CHIM.GENI] Chemical Sciences/Chemical engineering [SPI.GPROC] Engineering Sciences [physics]/Chemical and Process Engineering [SDE.IE]Environmental Sciences/Environmental Engineering Anaerobic digestion Cattle manure Storage Ensiling [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering [SDE.IE] Environmental Sciences/Environmental Engineering ComputingMilieux_MISCELLANEOUS |
| Zdroj: | 5th International Conference on Sustainable Solid Waste Management 5th International Conference on Sustainable Solid Waste Management, Jun 2017, Athènes, Greece 25th European Biomass Conference & Exhibition 25th European Biomass Conference & Exhibition, Jun 2017, Stockholm, Sweden |
| Popis: | International audience; This work presents a set of long-term storage assays at laboratory scale for two different types of catch crops and cattle manures. Comparison between the impact of ensiling and open-air storage techniques on organic matter and energy preservation was performed. Effects of co-ensiling with cattle manure and several additives on silage quality were assessed as well. Aerobic storage led to methane potential losses of more than 80% after 3 months of storage for catch crop assays and around 74% for cattle manure after 4 months. Higher energy recovery rates were obtained after ensiling, strongly depending on the nature of the organic residue used. For both catch crops, at least 96% of methane potential was preserved after 3 months. In contrast, single-handedly cattle manure lost 46% of its methane potential during long-term ensiling. Conservation of cattle manure was successfully enhanced through co-ensiling with fermentation stimulants and inhibitors. The best storage performance was obtained while combining cattle manure with wheat straw and glucose at high concentrations, for which methane potential was fully conserved even after 4 months of co-ensiling. These results highlight a major advantage in using ensiling rather than open-air storage for these organic residues. Moreover, the use of precursors of organic acids as co-substrates improved silage quality of non-adapted biomass for ensiling, such as cattle manure. This work contributes to the optimization of biomass preservation before anaerobic digestion, which will have a major impact on the methane yield of agricultural biogas plants. |
| Databáze: | OpenAIRE |
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