Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Laboratory-scale ultrasound pre-treated digestion of sludge: Heat and energy balance |
| Abstract | The objective of this work was to maximize the digestibility of biological sludge to elucidate the feasibility of a new sludge management strategy to recover good quality sludge for agricultural use. The combined effects of organic loading rates (from 0.7 to 2.8 g VS L-1 d-1) and the degree of disintegration by anaerobic digestion of sonicated activated sludge were discussed, and the thermal and energetic balances were evaluated. Despite low sonication inputs, sludge digestion performance improved in terms of solids degradation and biogas production depending on the soluble organic load. The biogas production by sonicated sludge was higher (up to 30%) with respect to the control. Filterability improved during digestion of sonicated sludge at medium OLR due to a significant abatement of the fines. Thermal balances indicated that sonication may be a proper system to guarantee self-sustaining WAS mesophilic digestion. Nevertheless, thickening is a pre-requisite to achieve a positive energy balance. |
| Source | Bioresource technology 102 (16), pp. 7567–7573 |
| Keywords | Anaerobic digestionBiogasEnergy balanceSludgeUltrasound |
| Journal | Bioresource technology |
| Editor | Elsevier Applied Science,, Barking, Regno Unito |
| Year | 2011 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.biortech.2011.05.025 |
| Authors | Braguglia, C. M.; Gianico, A.; Mininni, G. |
| Text | 347259 2011 10.1016/j.biortech.2011.05.025 Scopus 2 s2.0 79959620822 Anaerobic digestion Biogas Energy balance Sludge Ultrasound Laboratory scale ultrasound pre treated digestion of sludge Heat and energy balance Braguglia, C. M.; Gianico, A.; Mininni, G. IRSA CNR The objective of this work was to maximize the digestibility of biological sludge to elucidate the feasibility of a new sludge management strategy to recover good quality sludge for agricultural use. The combined effects of organic loading rates from 0.7 to 2.8 g VS L 1 d 1 and the degree of disintegration by anaerobic digestion of sonicated activated sludge were discussed, and the thermal and energetic balances were evaluated. Despite low sonication inputs, sludge digestion performance improved in terms of solids degradation and biogas production depending on the soluble organic load. The biogas production by sonicated sludge was higher up to 30% with respect to the control. Filterability improved during digestion of sonicated sludge at medium OLR due to a significant abatement of the fines. Thermal balances indicated that sonication may be a proper system to guarantee self sustaining WAS mesophilic digestion. Nevertheless, thickening is a pre requisite to achieve a positive energy balance. 102 Published version http //www.scopus.com/record/display.url eid=2 s2.0 79959620822 origin=inward Articolo in rivista Elsevier Applied Science, 0960 8524 Bioresource technology Bioresource technology Bioresour. technol. Bioresource technology. camillamaria.braguglia BRAGUGLIA CAMILLA MARIA giuseppe.mininni MININNI GIUSEPPE andrea.gianico GIANICO ANDREA |