Co-generation of ozone and hydrogen peroxide by dielectric barrier AC discharge in humid oxygen

被引:32
作者
Velikonja, J [1 ]
Bergougnou, MA
Castle, GSP
Cairns, WL
Inculet, II
机构
[1] Univ Western Ontario, Dept Chem & Biochem Engn, London, ON N6A 5B9, Canada
[2] Univ Western Ontario, Dept Elect & Comp Engn, London, ON N6A 5B9, Canada
[3] Trojan Technol Inc, London, ON N5V 4T7, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
ozone; hydrogen peroxide; hydroxyl radical; co-generation; electroozonation; advanced oxidation; dielectric barrier; AC discharge; water electrode; humid oxygen;
D O I
10.1080/01919510108962031
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In situ ozonation by a parallel-plate dielectric barrier AC discharge through oxygen onto water surfaces ("electroozonation") has been used to generate ozone in the gas phase and transport it across the gas-liquid interface in a single step, with simultaneous generation of hydrogen peroxide in the liquid phase. The latter may contribute to efficiency in terms of oxidative power production vs. electrical power consumption in that hydroxyl radicals are generated independently from ozone decomposition. The process is akin to glow-discharge electrolysis, in which .OH radicals are produced from ionized or activated water molecules, rather than by H2O2-induced ozone decomposition as in other advanced oxidations based upon O-3/H2O2.
引用
收藏
页码:467 / 478
页数:12
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