Sonolytic destruction of methyl tert-butyl ether by ultrasonic irradiation: The role of O{sub 3}, H{sub 2}O{sub 2}, frequency, and power density

Journal Article · Wed Sep 15 04:00:00 EDT 1999 · Environmental Science and Technology

DOI:https://doi.org/10.1021/es9810383· OSTI ID:687357

Kang, J W; Hung, H M; Lin, A; Hoffmann, M R ^[1]

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1. California Inst. of Tech., Pasadena, CA (United States). W.M. Keck Labs.

The kinetics of degradation of methyl tert-butyl ether (MTBE) by ultrasonic irradiation in the presence of ozone as functions of applied frequencies and applied power are investigated. Experiments are performed over the frequency range of 205--1,078 kHz. The higher overall reaction rates are observed at 358 and 618 kHz and then at 205 and 1,078 kHz. The observed pseudo-first-order rate constant, k{sub 0}, for MTBE degradation increases with increasing power density up to 250 W L{sup {minus}1}. A linear dependence of the first-order rate constant, k{sub O{sub 3}}, for the simultaneous degradation of O{sub 3} on power density is also observed. Naturally occurring organic matter (NOM) is shown to have a negligible effect on observed reaction rates.

• Sponsoring Organization: USDOE, Washington, DC (United States)
• OSTI ID: 687357
• Journal Information: Environmental Science and Technology, Journal Name: Environmental Science and Technology Journal Issue: 18 Vol. 33; ISSN ESTHAG; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ETHERS
GROUND WATER
HYDROGEN PEROXIDE
OZONIZATION
REMEDIAL ACTION
ULTRASONOGRAPHY
WATER POLLUTION