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초음파와 자외선(UV) 동시 적용이 가정용 가습기 내 살균에 미치는 시너지 효과에 대한 반응속도론적 연구 KCI 등재
Kinetic examination on synergistic effect of co-use of ultrasonic wave and ultraviolet radiation on bacterial disinfection in a household humidifier
pp.227-235
This study examined the effect of ultraviolet (UV) application on bacterial disinfection in a commercialized humidifier using ultrasonic wave (UW). To accurately examine disinfection kinetics in tap-water condition, tap-water was sterilized using a filter, and then inoculated with pure cultures of E. coli and P. putida with known viable counts. The disinfection kinetic characteristics were experimentally compared when UV alone, UW alone, and UW+UV together were applied in disinfecting the added bacteria in the commercialized humidifier. When UV alone was applied, bacterial disinfection kinetics followed a first-order decay reaction, and showed an approximately 10-time weaker disinfection compared to the typical UV disinfection in water treatment or wastewater treatment. When UW alone was applied, bacterial disinfection kinetics followed a second-order decay reaction with a low disinfection rate constant of 0.0002 min-1(CFU/mL)-1. When UV and UW were applied together, however and interestingly, the disinfection rate constant (0.0211 min-1(CFU/mL)-1) was approximately 100 times increased than that for the UW alone case. These results revealed that the co-use of UV and UW can provide synergistic effect on bacterial disinfection in a tap-water condition in household humidifiers.
1. 서 론
2. 재료 및 실험 방법
2.1 가정용 가습기 운전 조건
2.2 배양 기반의 미생물 정량적 측정 방법
2.3 PMA 전처리와 real-time PCR 분석
2.4 UV와 초음파에 의한 살균에 대한 반응속도론적분석
3. 결 과
3.1 UV 적용에 의한 살균 효과
3.2 초음파와 UV 동시 적용시 살균 효과에 대한 반응속도론적 분석
4. 결 론
References
