Ozone dissolution vs. Aqueous methylene blue degradation in semi-batch reactors with dielectric barrier discharge over the water surface

被引：0

作者：

Velikonja, Joran ^{[1
]}

Bergougnou, Maurice A. ^{[1
]}

Castle, G. S. Peter ^{[1
]}

Cairns, William L. ^{[1
]}

Inculet, Ion I. ^{[1
]}

机构：

[1] Department of Electrical Engineering, University of Western Ontario, London, Ont. N6A 5B9, Canada

来源：

Ozone: Science and Engineering | 2002年 / 24卷 / 03期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Decomposition; -; Degradation; Electrolysis; Water;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Ozone accumulation in water was compared with aqueous methylene blue (MB) degradation in a stirred semi-batch reactor. Comparable concentrations of gas-phase ozone, generated by parallel-plate dielectric-barrier AC discharge in high-purity oxygen, were allowed to contact the tested liquid using one of three regimens of ozone generation: (1) dry ex-situ; (2) humid ex-situ; and (3) humid in-situ (electroozonation). Results from (1) and (2) were similar, whereas in case (3) a slower ozone accumulation rate was contrasted by a three times faster MB degradation. A faster decomposition of aqueous ozone due to an assumed prevalence of free-radical induced MB degradation over direct ozonation in case (3) are indicative of a process similar to glow-discharge electrolysis.

引用

页码：159 / 170