Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | EFFECT OF FEED/INOCULUM RATIO ON ANAEROBIC DIGESTION OF SONICATED SLUDGE |
| Abstract | In recent years, relevant interest has been devoted to activated sludge disintegration and solubilisation techniques in order to cope with the biological limitations related to particulate degradation. Mechanical disintegration with ultrasound can efficiently transform insoluble organics into a soluble form: the solubilised organic matter is released from the cells to the bulk phase, thus accelerating the hydrolysis step in the digestion process. Experiments were carried out on bench scale anaerobic reactors fed with either untreated or disintegrated excess sludge, added with a biomass inoculum taken from a full scale anaerobic digester. Digestion tests have been carried out at different feed/inoculum ratios (F/I) in the range of 0.1-2, kinetics of VS reduction has been investigated and a beneficial effect of sonication is observed for all the experimental conditions. Similar beneficial results have also been found for biogas production with a maximum gain of 25% at 0.5 F/I ratio. |
| Source | Water science and technology 54 (5), pp. 77–84 |
| Keywords | Activated sludgeanaerobic digestionbiogashydrolysis kineticsultrasound |
| Journal | Water science and technology |
| Editor | IWA Publishing, London, |
| Year | 2006 |
| Type | Articolo in rivista |
| DOI | 10.2166/wst.2006.549 |
| Authors | BRAGUGLIA C.M.(1); MININNI G. (1); TOMEI M.C. (1); ROLLE E. (2) |
| Text | 42119 2006 10.2166/wst.2006.549 ISI Web of Science WOS 000242105100011 Activated sludge anaerobic digestion biogas hydrolysis kinetics ultrasound EFFECT OF FEED/INOCULUM RATIO ON ANAEROBIC DIGESTION OF SONICATED SLUDGE BRAGUGLIA C.M. 1 ; MININNI G. 1 ; TOMEI M.C. 1 ; ROLLE E. 2 1 CNR Istituto di Ricerca sulle Acque, Via Reno 1 00198 Rome, Italy; 2 Department of Hydraulics, Transportation and Roads, Faculty of Engineering, University of Rome La Sapienza , via Eudossiana 18, 00184 Rome, Italy In recent years, relevant interest has been devoted to activated sludge disintegration and solubilisation techniques in order to cope with the biological limitations related to particulate degradation. Mechanical disintegration with ultrasound can efficiently transform insoluble organics into a soluble form the solubilised organic matter is released from the cells to the bulk phase, thus accelerating the hydrolysis step in the digestion process. Experiments were carried out on bench scale anaerobic reactors fed with either untreated or disintegrated excess sludge, added with a biomass inoculum taken from a full scale anaerobic digester. Digestion tests have been carried out at different feed/inoculum ratios F/I in the range of 0.1 2, kinetics of VS reduction has been investigated and a beneficial effect of sonication is observed for all the experimental conditions. Similar beneficial results have also been found for biogas production with a maximum gain of 25% at 0.5 F/I ratio. 54 Conference IWA International Conference on Sustainable Management of Residues from Water and Waste Treatment Location Johannesburg, SOUTH AFRICA Date AUG 09 12, 2005 effect of feed inoculum ratio effect_of_feed_inoculum_ratio_wst_2006.pdf Articolo in rivista IWA Publishing 0273 1223 Water science and technology Water science and technology Water science and technology. Water sci. technol. camillamaria.braguglia BRAGUGLIA CAMILLA MARIA giuseppe.mininni MININNI GIUSEPPE mariaconcetta.tomei TOMEI MARIA CONCETTA TA.P07.001.003 Processi innovativi per il trattamento e lo smaltimento dei fanghi di depurazione |