Advanced Oxidation Process using DC Corona Discharge Over Water

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  • 水上直流コロナ放電を用いた促進酸化処理
  • スイジョウ チョクリュウ コロナ ホウデン オ モチイタ ソクシン サンカ ショリ

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<p>The characteristics of acetic acid decomposition were investigated by a negative DC corona discharge over water. The corona discharge is 4 mm away from the water surface. Hence, this method does not directly treat water using discharge plasma. During corona processing, oxygen or ozone was supplied to the reactor. The concentration of gaseous ozone over water in the reactor was measured by infrared spectroscopy. The optimal discharge treatment conditions were investigated by varying the gas flow rate. It was found that the decomposition rate of acetic acid increased when the gas flow rate was high at the same gaseous ozone concentration. Furthermore, as the gas flow rate increased, the concentration of the water vapor measured by infrared spectroscopy decreased. Our results indicate that the concentration of water vapor and ozone are important for water treatment using a DC corona discharge.</p>

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