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기-액 혼합 플라즈마 방전 시스템에서 화학적 활성종의 생성

Study on the Generation of Chemically Active Species Using Gas-liquid Mixing Plasma Discharging System

  • 김동석 (대구가톨릭대학교 환경과학과) ;
  • 박영식 (대구대학교 기초교육원)
  • Kim, DongSeog (Department of Environmental Science, Catholic University of Daegu) ;
  • Park, YoungSeek (Faculty of Liberal Education, Daegu University)
  • 투고 : 2014.04.11
  • 심사 : 2014.06.24
  • 발행 : 2014.07.30

초록

High-voltage dielectric discharges are an emerging technique in environmental pollutant degradation, which are characterized by the production of hydroxyl radicals as the primary degradation species. The initiation and propagation of the electrical discharges depends on several physical, chemical, and electrical parameters such as 1st and 2nd voltage of power, gas supply, conductivity and pH. These parameters also influence the physical and chemical characteristics of the discharges, including the production of reactive species such as OH, $H_2O_2$ and $O_3$. The experimental results showed that the optimum 1st voltage and oxygen flow rate for RNO (N-Dimethyl-4-nitrosoaniline, indicator of the generation of OH radical) degradation were 160 V (2nd voltage of is 15 kV) and 4 L/min, respectively. As the 2nd voltage (4 kV to 15 kV) was increase, RNO degradation was increased and, generated $H_2O_2$ and $O_3$ concentration were increased. The conductivity of the solution was not influencing the RNO degradation, $H_2O_2$ and $O_3$ generation. The pH effect on RNO degradation was not high. However, the lower pH and the conductivity, the higher $H_2O_2$ and $O_3$ generation were observed.

키워드

참고문헌

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피인용 문헌

  1. Enhance of Dissolved Oxygen Rate using a 3-prong Nozzle vol.24, pp.7, 2015, https://doi.org/10.5322/JESI.2015.24.7.947