Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | IS SONICATION EFFECTIVE TO IMPROVE BIOGAS PRODUCTION AND SOLIDS REDUCTION IN EXCESS SLUDGE DIGESTION? |
| Abstract | Results of three semi-continuous anaerobic tests were reported and discussed. Each test was carried out by two parallel anaerobic reactors fed with waste activated sludge, either as it was sampled from the sewage treatment plant of Rome North or previously disintegrated by ultrasound treatment. Activated sludge was sonicated at the energy input of 5,000 or 2,500 kJ kg21 dry solids corresponding to a disintegration degree of approximately 8 or 4%, respectively. Sonication proved to be effective both in increasing VS destruction and cumulative biogas production. The best increase of VS destruction (from 30 to 35%) was achieved in test #3 carried out at high organic load (10 d residence time) and low energy input (2,500 kJ kg21 dry solids). The best increase in cumulative biogas production (from 472 to 640 NL after 67 d of tests i.e.) was obtained in test #1 at low organic load (20 d residence time) and high energy input (5,000 kJ kg21 dry solids). Specific biogas production varied in the tests carried out with untreated sludge (0.55 - 0.67Nm3 kg21 VS destroyed) but was practically unchanged for all the tests with sonicated sludge (0.7Nm3 kg21 VS destroyed). |
| Source | Water science and technology 57 (4), pp. 479–483 |
| Keywords | activated sludgeanaerobic digestionbiogasheat balanceultrasound |
| Journal | Water science and technology |
| Editor | IWA Publishing, London, |
| Year | 2008 |
| Type | Articolo in rivista |
| DOI | 10.2166/wst.2008.003 |
| Authors | BRAGUGLIA C.M.; MININNI G.; GIANICO A. |
| Text | 42266 2008 10.2166/wst.2008.003 ISI Web of Science WOS 000254530000003 activated sludge anaerobic digestion biogas heat balance ultrasound IS SONICATION EFFECTIVE TO IMPROVE BIOGAS PRODUCTION AND SOLIDS REDUCTION IN EXCESS SLUDGE DIGESTION BRAGUGLIA C.M.; MININNI G.; GIANICO A. CNR Istituto di Ricerca Sulle Acque, Via Reno 1 00198 Rome, Italyirsa Results of three semi continuous anaerobic tests were reported and discussed. Each test was carried out by two parallel anaerobic reactors fed with waste activated sludge, either as it was sampled from the sewage treatment plant of Rome North or previously disintegrated by ultrasound treatment. Activated sludge was sonicated at the energy input of 5,000 or 2,500 kJ kg21 dry solids corresponding to a disintegration degree of approximately 8 or 4%, respectively. Sonication proved to be effective both in increasing VS destruction and cumulative biogas production. The best increase of VS destruction from 30 to 35% was achieved in test #3 carried out at high organic load 10 d residence time and low energy input 2,500 kJ kg21 dry solids . The best increase in cumulative biogas production from 472 to 640 NL after 67 d of tests i.e. was obtained in test #1 at low organic load 20 d residence time and high energy input 5,000 kJ kg21 dry solids . Specific biogas production varied in the tests carried out with untreated sludge 0.55 0.67Nm3 kg21 VS destroyed but was practically unchanged for all the tests with sonicated sludge 0.7Nm3 kg21 VS destroyed . 57 is sonication effective is_sonication_effective_pubblicata_.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 TA.P07.001.003 Processi innovativi per il trattamento e lo smaltimento dei fanghi di depurazione |