Characterization of a microwave plasma jet (TIAGO) in‐contact with water: Application in degradation of methylene blue dye,Plasma Processes and Polymers

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Characterization of a microwave plasma jet (TIAGO) in‐contact with water: Application in degradation of methylene blue dye
Plasma Processes and Polymers ( IF 2.9 ) Pub Date : 2019-10-17 , DOI: 10.1002/ppap.201900157
Ahmad Hamdan ₁ , Clara Gagnon ₁ , Melisa Aykul _{1,

2} , Jacopo Profili ₁

Affiliation

Plasma in or in‐contact with liquids is a research field that has great potential in the treatment of wastewater. Today, efforts are focused on finding a plasma source that can efficiently remove persistent pollutants from water. In this study, we evaluate the effectiveness of a microwave plasma jet, in TIAGO (Torche à Injection Axiale sur Guide d'Ondes) configuration, using methylene blue (MB) as a model organic contaminant. The assessments conducted herein show that MB degradation is promoted at short nozzle–water distance, high gas flow rate, elevated microwave power, and excessive initial water conductivity (up to 10,000 µS/cm). The plasma characteristics, namely composition, electron density, and OH rotational temperature, as well as water acidity and conductivity are also evaluated.

中文翻译：

与水接触的微波等离子体射流（TIAGO）的表征：在亚甲基蓝染料的降解中的应用

在液体中或与液体接触的血浆是在废水处理方面具有巨大潜力的研究领域。如今，努力集中在寻找可以有效去除水中持久性污染物的等离子体源。在这项研究中，我们使用亚甲基蓝（MB）作为模型有机污染物，评估了在TIAGO（TorcheàInjection Axiale sur Guide d'Ondes）配置中的微波等离子体射流的有效性。本文进行的评估表明，在较短的喷嘴与水之间的距离，较高的气体流速，较高的微波功率以及过高的初始水电导率（高达10,000 µS / cm）的情况下，会促进MB降解。还评估了等离子体特性，即组成，电子密度和OH旋转温度，以及水的酸度和电导率。

更新日期：2019-10-17

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