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Sonochemical Degradation of Pollutants

Destaillats, Hugo and Hoffmann, Michael R. and Wallace, Henry C. (2003) Sonochemical Degradation of Pollutants. In: Chemical Degradation Methods for Wastes and Pollutants. Environmental Science and Pollution Control Series. No.26. Marcel Dekker , New York, NY, pp. 201-233. ISBN 0-8247-4307-5.

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The term sonochemistry describes all chemical processes in which ultrasound irradiation is involved. The interaction of an acoustical field with the irradiated fluid provides new reaction pathways and alters existing chemical processes in the system, usually yielding an enhancement of reaction rates. A distinction should be pointed out between the effects of ultrasound in homogeneous and in heterogeneous media. In the first case, sonochemical reactions are related to new chemical species produced during acoustical cavitation, whereas the enhancement of heterogeneous reactions can also be related to mechanical effects induced in the fluid system by sonication. These effects include an increase in the surface area between the reactants, a faster renovation of catalyst surfaces, and accelerated dissolution and mixing. Although this chapter focuses only on the uses of ultrasound related to the degradation of organic pollutants, we should mention that many other sonochemical processes exist, such as organic and organometallic synthesis, and polymer synthesis and modifications.

Item Type:Book Section
Hoffmann, Michael R.0000-0001-6495-1946
Additional Information:© 2003 New York : M. Dekker.
Series Name:Environmental Science and Pollution Control Series
Issue or Number:26
Record Number:CaltechAUTHORS:20150821-094827159
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:59807
Deposited By: Ruth Sustaita
Deposited On:21 Aug 2015 20:08
Last Modified:03 Mar 2020 13:01

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