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Sonochemical decomposition of phenol: evidence for a synergistic effect of ozone and ultrasound for the elimination of total organic carbon

Lesko, T. and Colussi, A. J. and Hoffmann, M. R. (2006) Sonochemical decomposition of phenol: evidence for a synergistic effect of ozone and ultrasound for the elimination of total organic carbon. In: 5th World Water Congress: Drinking Water Treatment Processes. Water Science & Technology: Water Supply. Vol.6. No.3. IWA Publishing , London, pp. 71-78. ISBN 978-1-84339-587-4. https://resolver.caltech.edu/CaltechAUTHORS:20110719-111534433

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Abstract

The degradation of phenol (C_6H_5OH) was investigated under sonication, ozonation, and the combination of sonication and ozonation. The coupling of these two oxidation processes yielded phenol degradation kinetics that are similar to those predicted from the linear combination of the individual sonication and ozonation experiments. However, synergistic effects of sonolytic ozonation were observed for the reduction of the total organic carbon (TOC) in these systems. The rate of TOC decomposition was found to be proportional to both the aqueous steady-state ozone concentration and the ultrasonic power density. At 358 kHz, sonication combined with ozonation enhanced TOC loss rates by 43% over the sum of the rates obtained by the separate treatments. Intermediate species detected during the degradation of phenol indicate that while the primary degradation products are efficiently degraded by simple ozonolysis, the simultaneous addition of ultrasonic irradiation is necessary to degrade the more recalcitrant unsaturated daughter products.


Item Type:Book Section
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.2166/ws.2006.795DOIArticle
http://www.iwaponline.com/ws/00603/ws006030071.htmPublisherArticle
ORCID:
AuthorORCID
Colussi, A. J.0000-0002-3400-4101
Hoffmann, M. R.0000-0001-6495-1946
Additional Information:© 2006 IWA Publishing.
Subject Keywords:elimination; oxidation; ozone; phenol; TOC; ultrasound
Series Name:Water Science & Technology: Water Supply
Issue or Number:3
Record Number:CaltechAUTHORS:20110719-111534433
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20110719-111534433
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:24459
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:22 Jul 2011 17:23
Last Modified:03 Mar 2020 13:01

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