Sonolytic destruction of methyl tert-butyl ether by ultrasonic irradiation:: The role of O3, H2O2, frequency, and power density

被引：170

作者：

Kang, JW ^{[1
]}

Hung, HM ^{[1
]}

Lin, A ^{[1
]}

Hoffmann, MR ^{[1
]}

机构：

[1] CALTECH, WM Keck Labs, Pasadena, CA 91125 USA

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 1999年 / 33卷 / 18期

关键词：

D O I：

10.1021/es9810383

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

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 205-1078 kHz. The higher overall reaction rates are observed at 358 and 618 kHz and then at 205 and 1078 kHz. The observed pseudo-first-order rate constant, k(O), for MTBE degradation increases with increasing power density up to 250 W L-1. A linear dependence of the first-order rate constant, k(O3), for the simultaneous degradation of O-3 on power density is also observed. Naturally occurring organic matter (NOM) is shown to have a negligible effect on observed reaction rates.

引用

页码：3199 / 3205

页数：7

共 23 条

[1] CRITICAL-REVIEW OF RATE CONSTANTS FOR REACTIONS OF HYDRATED ELECTRONS, HYDROGEN-ATOMS AND HYDROXYL RADICALS (.OH/.O-) IN AQUEOUS-SOLUTION [J].