Ιδρυματικό Αποθετήριο
Πολυτεχνείο Κρήτης
Πολυτεχνείο Κρήτης
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| URI | http://purl.tuc.gr/dl/dias/7BBC95A8-E31D-433D-A1E7-AC7FE39BA7F6 | - |
| Αναγνωριστικό | https://doi.org/10.1016/j.jhazmat.2004.01.004 | - |
| Αναγνωριστικό | http://www.sciencedirect.com/science/article/pii/S0304389404000482 | - |
| Γλώσσα | en | - |
| Μέγεθος | 8 pages | en |
| Τίτλος | Degradation of polycyclic aromatic hydrocarbons in aqueous solutions by ultrasonic irradiation | en |
| Δημιουργός | Psyllaki Eleftheria | en |
| Δημιουργός | Ψυλλακη Ελευθερια | el |
| Δημιουργός | Goula Grammatiki | en |
| Δημιουργός | Γουλα Γραμματικη | el |
| Δημιουργός | Kalogerakis Nikos | en |
| Δημιουργός | Καλογερακης Νικος | el |
| Δημιουργός | Mantzavinos Dionysis | en |
| Δημιουργός | Μαντζαβινος Διονυσης | el |
| Εκδότης | Elsevier | en |
| Περίληψη | The effect of various operating conditions (initial concentration, liquid phase temperature, applied power, ultrasound frequency) and of the presence of matrix components (1-butanol, NaCl and FeSO4) on the sonochemical degradation of naphthalene, acenaphthylene and phenanthrene inwater has been studied.Ahorn-type sonicatorwas used to deliver the ultrasound energy, while immersion sampling solid-phase microextraction (SPME) coupled with GC–MS was employed to follow concentration–time profiles of the chosen PAHs. At the operating conditions in question (initial concentrations of 150, 300 and 450g/l, temperatures of 20 and 40 ◦C, applied power of 45, 75 and 150Wand ultrasound frequencies of 24 and 80 kHz), all PAHs were susceptible to sonochemical treatment and, in most cases, complete degradation could be achieved in up to 120 min of treatment. Conversion was found to decrease with increasing initial concentration and temperature and decreasing power and frequency as well as in the presence of an excess of dissolved salts. Addition of 1-butanol, a known hydroxyl radical scavenger, substantially suppressed degradation throughout the course of the reaction, thus highlighting the role of oxidation reactions in PAHs degradation. In contrast, addition of Fe2+ ions at a low concentration enhanced degradation through a Fenton-like reaction. | en |
| Τύπος | Peer-Reviewed Journal Publication | en |
| Τύπος | Δημοσίευση σε Περιοδικό με Κριτές | el |
| Άδεια Χρήσης | http://creativecommons.org/licenses/by/4.0/ | en |
| Ημερομηνία | 2015-09-24 | - |
| Ημερομηνία Δημοσίευσης | 2004 | - |
| Θεματική Κατηγορία | Degradation | en |
| Θεματική Κατηγορία | PAHs | en |
| Θεματική Κατηγορία | SPME | en |
| Θεματική Κατηγορία | Ultrasound | en |
| Θεματική Κατηγορία | Water | en |
| Βιβλιογραφική Αναφορά | E. Psillakis, G. Goula, N. Kalogerakis and D. Mantzavinos, "Degradation of polycyclic aromatic hydrocarbons in aqueous solutions by ultrasonic irradiation," J. Hazard. Mater., vol. 108, no.1, pp.95–102, Apr. 2004 doi: 10.1016/j.jhazmat.2004.01.004. | en |
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