A dielectric barrier discharge (DBD) plasma reactor was investigated for the inactivation of Ralstonia Solanacearum which causes bacterial wilt in aquiculture. The DBD plasma reactor of this study was divided into power supply unit, gas supply unit and plasma reactor. The plasma reactor consisted of a quartz dielectric tube, discharge electrode (inner) and ground electrode (outer). The experimental results showed that the optimum 1st voltage, 2nd voltage, air flow rate and pH were for 100 V (1st voltage), 15 kV (2nd voltage), 4 L/min, and pH 3, respectively. At a low 1st voltage, shoulder and tailing off phenomena was observed. The shoulder phenomenon was decreased as the increase of 1st voltage. R. Solanacearum disinfection in the lower air flow rate was showed shoulder and tailing off phenomenon because the active species generated less. Under optimum condition, shoulder and tailing off phenomenon was reduced. When the 2nd voltage was less than 7.5 kV, tailing off phenomenon was observed and this was not vanishes even though the increase of the disinfection time. The inactivation efficiency increased as the increase of air flow rate, however, the efficiency decreased when the air flow rate was above 4 L/min. R. Solanacearum disinfection at pH 3 showed somewhat higher than in pH 11. The pH effect of R. Solanacearum deactivation is less than the impact on other factor.

Abstract
 1. 서 론
 2. 재료 및 방법
  2.1. 실험 장치 및 운전 조건
  2.2. 실험 방법
 3. 결과 및 고찰
  3.1. 1차 전압이 R. Solanacearum 불활성화에 미치는 영향
  3.2. 공기 주입량이 R. Solanacearum 불활성화에 미치는 영향
  3.3. 2차 전압이 R. Solanacearum 불활성화에 미치는 영향
  3.4. pH가 R. Solanacearum 불활성화에 미치는 영향
 4. 결 론
 참 고 문 헌

• 백상은(대구가톨릭대학교 환경과학과) | Sang-Eun Back (Department of Environmental Science, Catholic University of Daegu)
• 김동석(대구가톨릭대학교 환경과학과) | Dong-Seog Kim (Department of Environmental Science, Catholic University of Daegu)
• 박영식(대구대학교 기초교육원) | Young-Seek Park (Faculty of Liberal Education, Daegu University) Corresponding author