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Sonochemical degradation of ofloxacin in aqueous solutions

Xekoukoulotakis Nikos, Mantzavinos Dionysis, D. Fatta-Kassinos, Valanidou L., Papaioannou A., Achilleos A., Hapeshi E.

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URIhttp://purl.tuc.gr/dl/dias/8907B25E-DA97-4190-B38C-66A42228FC78-
Αναγνωριστικόhttps://doi.org/10.2166/wst.2010.921-
Γλώσσαen-
ΜέγεθοςPages 3141–3146en
ΤίτλοςSonochemical degradation of ofloxacin in aqueous solutionsen
ΔημιουργόςXekoukoulotakis Nikosen
ΔημιουργόςΞεκουκουλωτακης Νικοςel
ΔημιουργόςMantzavinos Dionysisen
ΔημιουργόςΜαντζαβινος Διονυσηςel
ΔημιουργόςD. Fatta-Kassinosen
ΔημιουργόςValanidou L.en
ΔημιουργόςPapaioannou A.en
ΔημιουργόςAchilleos A.en
ΔημιουργόςHapeshi E.en
ΕκδότηςWater Science and Technologyen
ΠερίληψηThe use of low frequency (20 kHz), high energy ultrasound for the degradation of the antibiotic ofloxacin in water was investigated. Experiments were performed with a horn-type ultrasound generator at varying applied power densities (130–640 W/L), drug concentrations (5–20 mg/L), hydrogen peroxide concentrations (0–100 mM) and sparging gases (air, oxygen, nitrogen and argon). In general, conversion (which was assessed following sample absorbance at 288 nm) increased with increasing ultrasound energy and peroxide concentration and decreasing initial drug concentration. Moreover, reactions under an argon atmosphere were faster than with diatomic gases, possibly due to argon's physical properties (e.g. solubility, thermal conductivity and specific heat ratio) favoring sonochemical activity. Overall, low to moderate levels of ofloxacin degradation were achieved (i.e. it never exceeded 50%), thus indicating that radical reactions in the liquid bulk rather than thermal reactions in the vicinity of the cavitation bubble are responsible for ofloxacin degradation.en
ΤύποςPeer-Reviewed Journal Publicationen
ΤύποςΔημοσίευση σε Περιοδικό με Κριτέςel
Άδεια Χρήσηςhttp://creativecommons.org/licenses/by/4.0/en
Ημερομηνία2015-10-22-
Ημερομηνία Δημοσίευσης2010-
Βιβλιογραφική ΑναφοράE. Hapeshi, A. Achilleos, A. Papaioannou, L. Valanidou, N.P. Xekoukoulotakis, D. Mantzavinos, D. Kassinos, Sonochemical degradation of ofloxacin in aqueous solutions, Water Science and Technology, Vol. 61, no. 12, pp. 3141-3146, 2010. doi:10.2166/wst.2010.921.en

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