Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | A model-based tool for reactor configuration of thermophilic biogas plants fed with Waste Activated Sludge |
| Abstract | The aim of this study consists in the individuation of the most appropriate configuration for the thermophilic anaerobic digestion of Waste Activated Sludge (WAS); to this purpose, the Anaerobic Digestion Model n degrees 1 (ADM1) was adopted. To enhance the energy production, the sludge underwent a thermal pre-treatment. Semi-continuous tests were performed for 281 days, both with raw and pre-treated WAS. The disintegration constant (k_dis) and the maximum acetate uptake rate (km_ac), were calibrated; the latter parameter was increased up to 2.2 KgCOD Kg(-1)COD d(-1) by the pre-treatment. To evaluate the performances of different plant configurations, the specific methane yield and digester productivity were estimated for varying Hydraulic Retention Times (HRTs) and substrate concentrations. The pre-treatment impact on the substrate resulted in the 20% enhancement of the specific methane production for plants run with HRT <10 days; the most proper input concentration consisted in 30 g of Volatile Solids (VS) d(-1). This procedure enabled to estimate the most appropriate HRT range for a) preventing the biomass washout (6/7 days for lower and 8 days for higher input concentration) and b) maximizing the methane and energy production for unit of digester volume (10/12 days). (C) 2017 Elsevier Ltd. All rights reserved. |
| Source | Renewable energy 113, pp. 411–419 |
| Keywords | ADM1Waste Activated SludgeThermophilic CSTRDigester productivityMethane yield optimization |
| Journal | Renewable energy |
| Editor | Pergamon,, Oxford, Regno Unito |
| Year | 2017 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.renene.2017.05.082 |
| Authors | Montecchio, D.; Braguglia, C. M.; Gallipoli, A.; Gianico, A. |
| Text | 420404 2017 10.1016/j.renene.2017.05.082 ISI Web of Science WOS 000407655300037 ADM1 Waste Activated Sludge Thermophilic CSTR Digester productivity Methane yield optimization A model based tool for reactor configuration of thermophilic biogas plants fed with Waste Activated Sludge Montecchio, D.; Braguglia, C. M.; Gallipoli, A.; Gianico, A. IRSA CNR The aim of this study consists in the individuation of the most appropriate configuration for the thermophilic anaerobic digestion of Waste Activated Sludge WAS ; to this purpose, the Anaerobic Digestion Model n degrees 1 ADM1 was adopted. To enhance the energy production, the sludge underwent a thermal pre treatment. Semi continuous tests were performed for 281 days, both with raw and pre treated WAS. The disintegration constant k_dis and the maximum acetate uptake rate km_ac , were calibrated; the latter parameter was increased up to 2.2 KgCOD Kg 1 COD d 1 by the pre treatment. To evaluate the performances of different plant configurations, the specific methane yield and digester productivity were estimated for varying Hydraulic Retention Times HRTs and substrate concentrations. The pre treatment impact on the substrate resulted in the 20% enhancement of the specific methane production for plants run with HRT <10 days; the most proper input concentration consisted in 30 g of Volatile Solids VS d 1 . This procedure enabled to estimate the most appropriate HRT range for a preventing the biomass washout 6/7 days for lower and 8 days for higher input concentration and b maximizing the methane and energy production for unit of digester volume 10/12 days . C 2017 Elsevier Ltd. All rights reserved. 113 Published version Articolo in rivista Pergamon, 0960 1481 Renewable energy Renewable energy Renew. energy Renewable energy. camillamaria.braguglia BRAGUGLIA CAMILLA MARIA andrea.gianico GIANICO ANDREA daniele.montecchio MONTECCHIO DANIELE agata.gallipoli GALLIPOLI AGATA |