Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Potential of high-frequency ultrasounds to improve sludge anaerobic conversion and surfactants removal at different food/inoculum ratio |
| Abstract | High-frequency ultrasounds have recently gained interest as oxidative technique for sonochemical degradation of organic contaminants in water. In this study an innovative approach applying 200. kHz ultrasounds to improve both sludge anaerobic biodegradability and decontamination is proposed. Digestion tests were performed on batch reactors fed either with untreated or sonicated sludge, at different food/inoculum (F/I) ratio, in the range 0.3-0.9. First order kinetic highlighted a decreasing trend of the hydrolysis rate by increasing F/I, both for untreated and sonicated sludge. Positive effect of ultrasounds on specific biogas production was evident, but the conversion rate for pretreated sludge was strongly affected by F/I, and decreased by increasing F/I. Anionic surfactants anaerobic removal occurred in all tests, but the effect of ultrasounds was significant only at F/I. = 0.3. By pretreating sludge with high frequency ultrasounds, low F/I was the ideal ratio improving both sludge anaerobic digestion and decontamination. © 2014 Elsevier Ltd. |
| Source | Bioresource technology 159, pp. 207–214 |
| Keywords | Anaerobic digestionBiogasHigh-frequency ultrasoundsSludge pretreatmentSurfactants |
| Journal | Bioresource technology |
| Editor | Elsevier Applied Science,, Barking, Regno Unito |
| Year | 2014 |
| Type | Articolo in rivista |
| DOI | 10.1016/j.biortech.2014.02.084 |
| Authors | Gallipoli A.; Gianico A.; Gagliano M.C.; Braguglia C.M. |
| Text | 300305 2014 10.1016/j.biortech.2014.02.084 Scopus 2 s2.0 84896304004 Anaerobic digestion Biogas High frequency ultrasounds Sludge pretreatment Surfactants Potential of high frequency ultrasounds to improve sludge anaerobic conversion and surfactants removal at different food/inoculum ratio Gallipoli A.; Gianico A.; Gagliano M.C.; Braguglia C.M. Istituto di Ricerca sulle Acque CNR, Area della Ricerca RM1, Via Salaria km. 29, 300, 00015 Monterotondo, Roma, Italy High frequency ultrasounds have recently gained interest as oxidative technique for sonochemical degradation of organic contaminants in water. In this study an innovative approach applying 200. kHz ultrasounds to improve both sludge anaerobic biodegradability and decontamination is proposed. Digestion tests were performed on batch reactors fed either with untreated or sonicated sludge, at different food/inoculum F/I ratio, in the range 0.3 0.9. First order kinetic highlighted a decreasing trend of the hydrolysis rate by increasing F/I, both for untreated and sonicated sludge. Positive effect of ultrasounds on specific biogas production was evident, but the conversion rate for pretreated sludge was strongly affected by F/I, and decreased by increasing F/I. Anionic surfactants anaerobic removal occurred in all tests, but the effect of ultrasounds was significant only at F/I. = 0.3. By pretreating sludge with high frequency ultrasounds, low F/I was the ideal ratio improving both sludge anaerobic digestion and decontamination. © 2014 Elsevier Ltd. 159 Published version http //www.scopus.com/inward/record.url eid=2 s2.0 84896304004 partnerID=q2rCbXpz Potential of high frequency ultrasounds to improve sludge anaerobic conversion and surfactants removal at different food/inoculum ratio paper_pubblicato 0.pdf Articolo in rivista Elsevier Applied Science, 0960 8524 Bioresource technology Bioresource technology Bioresour. technol. Bioresource technology. agata.gallipoli GALLIPOLI AGATA GAGLIANO MARIA CRISTINA camillamaria.braguglia BRAGUGLIA CAMILLA MARIA andrea.gianico GIANICO ANDREA ROUTES Novel processing routes for effective sewage sludge management TA.P07.001.005 Recupero di risorse da rifiuti e biomasse |