Influences of gases on methyl orange degradation by falling film dielectric barrier discharge reactor

doi:10.11894/1005-829x.2018.38(11).035

Abstract

Abstract: Taking azo dyes methylene organic(MO) as the object,the treatment effect of the falling film dielectric barrier discharge(DBD) reactor under different discharge gases(argon,air,oxygen) has been investigated. The results show that when oxygen is used as DBD the discharge gas,the treatment effect of it on methylene orange is the best, argon the second,and air the worst. Three kinds of active oxygen particles(O₃,H₂O₂,·OH) play a vital role on methylene orange oxidation degradation. The contents of the three kinds of active particles in the oxygen discharge system are far higher than that in the air discharge system. The H₂O₂ content in the argon discharge system is the highest. In air discharge system a great deal of NO₃^- and NO₂^- which count against methylene orange are also detected.

Key words: dielectric barrier discharge, plasma, gases, active oxygen particles oxidants, dye wastewater

摘要： 以偶氮染料甲基橙为对象，研究使用降膜介质阻挡放电（DBD）反应器在不同放电气体（氩气、空气、氧气）下的处理效果。结果表明：氧气作DBD放电气氛时，甲基橙处理效果最佳，氩气次之，空气最差。O₃、H₂O₂、·OH这3种活性氧粒子对于甲基橙氧化降解起着至关重要的作用，氧气放电体系内3种活性粒子的含量远高于空气放电体系；氩气放电体系内的H₂O₂含量最高；空气放电体系还检测到大量的对甲基橙降解不利的NO₃^-、NO₂^-。

关键词: 介质阻挡放电, 等离子体, 气氛, 活性氧粒子, 染料废水

CLC Number:

X703.1

Wang Baowei, Peng Yeping, Yao Shumei, Ya Yurong, Wang Xiaolei, An Shaofeng. Influences of gases on methyl orange degradation by falling film dielectric barrier discharge reactor[J]. INDUSTRIAL WATER TREATMENT, 2018, 38(11): 35-40.

王保伟, 彭叶平, 姚淑美, 押玉荣, 王晓磊, 安少锋. 气氛对降膜介质阻挡放电反应器降解甲基橙的影响[J]. 工业水处理, 2018, 38(11): 35-40.

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URL: https://www.iwt.cn/EN/10.11894/1005-829x.2018.38(11).035

https://www.iwt.cn/EN/Y2018/V38/I11/35

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