Study on the active properties of plasma activated water generated by DBD with bubble diffuser
编号:130 访问权限:仅限参会人 更新:2022-08-11 15:26:54 浏览:279次 口头报告

报告开始:2022年11月04日 16:40(Asia/Shanghai)

报告时间:20min

所在会场:[T] Electrotechnical Theory and New Electromagnetic Technology [OS16] Oral Session 16

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摘要
The degradation of wastewater by plasma activated water (PAW) mainly relies on the interaction between reactive species, such as OH, H2O2 and O3 generated by discharges, and contaminant particles. A coaxial dielectric barrier discharge (DBD) device with bubbling system, was built to achieve the generation of PAW by using high frequency AC power supply. Through the electrical and optical diagnosis of DBD, typical voltage and current wave-forms were obtained, and the composition of discharge products was analyzed. Combined with the detection of the conductivity and pH value of activated water, the influence of different experimental parameters (gas species, flow rate, bubble size and discharge voltage) on the effect of PAW was verified. Results showed that argon discharge is more uniform while air discharge produces more active particle species, which increases the chemical activity of PAW. The bubble size and the gas flow rate have optimal combination for the improvement of the activation of PAW. The higher the discharge voltage is, the stronger the activity of PAW is. However, air discharges with too high voltage will result in generation of intensive heat in the dis-charge device, leading to additional energy consumption. These results provide the basis for the optimization of discharge parameters, which is very important for improving the efficiency of wastewater treatment and for promoting the industrial development of plasma technology.
关键词
Bubbling system, dielectric barrier discharge, optical/electrical diagnosis, plasma activates water
报告人
Lin Jing
Shandong University

稿件作者
Lin Jing Shandong University
Xu Guo Shandong University
Ying Sun Shandong University
Jixin Bai Shandong University
Yuantao Zhang Shandong University
Liang Zou Shandong University
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重要日期
  • 会议日期

    11月03日

    2022

    11月05日

    2022

  • 08月01日 2022

    初稿截稿日期

  • 11月04日 2022

    注册截止日期

  • 11月05日 2022

    报告提交截止日期

主办单位
Huazhong University of Science and Technology
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