• 제목/요약/키워드: Electrophysicochemical

검색결과 3건 처리시간 0.014초

제3전극에 의한 전계변화가 수중 전기물리화학적 특성에 미치는 영향 (The Effects of Electric Field Variation by The Third Electrode on Water Electrophysicochemical Characteristics)

  • 김진규
    • 조명전기설비학회논문지
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    • 제24권9호
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    • pp.136-141
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    • 2010
  • In this paper, after the third electrode type oxidant generator which could format non-uniform electric field in water had been manufactured and installed, by direct electrolysis, the effects of the hydrogen potential and oxidation reduction potential characteristics attendant upon electric field change on a higher concentration oxidant generation characteristics were investigated. Consequently, as the third electrode was installed in the middle of two slit electrodes and the polarity of applied power was changed, it was observed that the third electrode system with the positive electrode can generate a higher concentration oxidant, hydrogen potential and oxidation reduction potential as compared with that of the negative electrode. It is because the positive electrode was bombarded mostly energetic electrons and the negative electrode was bombarded mainly by less energetic positive ions.

전.자계상의 전원장치변화에 따른 비열방전 플라즈마의 $SO_2$와 CO가스 제거특성 ($SO_2$ and CO Removal Characteristics in Various Applied Voltage of Nonthermal Discharge Plasma in a Crossed DC Magnetic Field)

  • 이근택;금상택;문재덕
    • 대한전기학회논문지:전기물성ㆍ응용부문C
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    • 제48권3호
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    • pp.215-220
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    • 1999
  • $SO_2$and CO gas removal characteristics of a wire-to-cylinder type nonthermal discharge plasma reactor in various applied voltage (-dc, ac, fast rising pulse and high frequency pulse) and a crossed dc magnetic field have been investigated. The experiment has been emphasized on the oxidizing characteristics of $SO_2$ and CO gas by $O_3$ and the applying of a crossed magnetic field, which would induce the cyclotronic and drift motions of electrons making the residual time longer in the removal airgap space. And it also would enhance the energy of electrons and the electrophysicochemical actions to remove the pollutant gases effectively. It is found thatthe corona onset voltage and the breakdown voltage were decreased with increasing the crossed magnetic field and decrease initial fed $SO_2$and CO concentration. As a result, a higher ozone generation and $SO_2$ and CO gas removal rate of 20[%] can be obtained with -dc, ac and fast rising pulse corona discharges in the crossed dc current-induced magnetic field. But high frequency pulse didn't show effect in applying of a crossed magnetic field.

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강유전체층을 갖는 선대선 방편 플라즈마장치의 코로나 방전 및 오존발생 특성 (Corona Discharge and Ozone Generation Characteristics of a Wire-to-Wire Plasma Reactor with a Ferroelectric Pellet Layer)

  • 문재덕;신정민;한상옥
    • 대한전기학회논문지:전기물성ㆍ응용부문C
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    • 제53권7호
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    • pp.377-381
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    • 2004
  • A discharge plasma reactor using a ferroelectric pellet packed bed is now used as a removal means of pollutant gases, such as NOx, SOx and VOCs. When an ac voltage is applied to this plasma reactor, then the pellets are polarized, and great electric fields are formed at each top and bottom contact points of the ferroelectric pellets. Thus the points of each pellet become covered with intense corona discharges, where an electrophysicochemical reaction is taking place strongly However these strong discharges also elevate the temperature of the pellets greatly and concurrently decrease the output ozone generation, as a result, the overall removal efficiency of gas becomes decreased greatly A new configuration of discharge plasma reactor using a ferroelectric pellet layer and a wire-to-wire electrode has been proposed and investigated experimentally. It is found that an intensive microdischarge is taking place on the surface of ac corona-charged ferroelectric pellet layer of the proposed reactor, which concurrently enhances the efficiency of plasma generation greatly And, this type of configuration of plasma reactor utilizing a wire-to-wire electrode and a ferroelectric pellet layer could be used as one of effective plasma reactors to remove pollutant gas.