유전체 장벽 방전 플라즈마 방전수의 특성과 미생물 소독에 관한 연구

• 영문명: A Study on the Microorganism Disinfection and Characteristics of Discharged Water of Dielectric Barrier Discharge Plasma Systems
• 발행기관: 한국환경보건학회
• 저자명: 김동석(Dong-Seog Kim) 박영식(Young-Seek Park)
• 간행물 정보: 『1. 한국환경보건학회지』제38권 제2호, 159~165쪽, 전체 7쪽
• 주제분류: 공학 > 환경공학
• 파일형태: PDF
• 발행일자: 2012.04.30

영문 초록

Objectives: This experiment was carried out to elucidate the effect of discharged water on the disinfection of Phytophthora capsici and evaluate the water characteristics. Methods: The dielectric barrier discharges (DBD) plasma reactor system used in this study consisted of a plasma component [discharge, ground electrode and quartz dielectric tube], high voltage source, and air supply. The effects of water characteristics such as pH, ORP and conductivity and the disinfection effect of discharged water were investigated. Results: Experimental results showed that in the process of discharge, the pH decreased, whereas ORP and electric conductivity increased. When the discharge time was 30 min, Phytophthora capsici of 2.94 log was disinfected within 300 seconds. Disinfection performance of stored discharged water was maintained for three days; however the disinfection effect vanished after five days. When Phytophthora capsici was injected into the discharged water, the disinfection effect decreased after two days. Conclusions: It is considered that the main disinfection parameters of the discharged water were chemically active species such as H2O2 and O3 and high ORP.

키워드

plasma disinfection phytophthora capsici discharged water