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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2020.12
- 수록면
- 890 - 897 (8page)
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초록· 키워드
오류제보하기
Microbial water pollution is a key concern leading to waterborne diseases. This study evaluated the disinfection of wastewater using ozonation. The following aspects were investigated: inactivation efficiency against Escherichia coli, Salmonella species, Shigella species, and Vibrio cholerae; modelling of inactivation kinetics using disinfection models; and evaluation of microbial regrowth studies. 99% bacterial inactivation was obtained within 15 min, irrespective of the water matrix, showing the strong oxidizing potential of ozone. The disinfection data were fitted into the log-linear and Weibull models. The survival curves were non-linear and fitted the Weibull model (fractional bias and normalized mean square error equal to 0.0), especially at high bacterial concentrations (10<SUP>6</SUP> CFU/mL). The inactivation occurred in two stages: an initial rapid stage (15 min) and a final slow stage exhibiting a tailing mechanism (15-45 min) probably as a result of the self-defence mechanisms adopted by the bacteria to limit oxidative stress. Considering the pattern of survival curves, no significant differences (p > 0.05) were observed among the four tested bacterial species; thus showing that ozone was effective against all the bacteria tested. There was minimal bacterial regrowth in the treated samples 24 h after ozone disinfection with reactivation values of 0-5% obtained.
목차
ABSTRACT
1. Introduction
2. Material and Methods
3. Results and Discussion
4. Conclusions
References
참고문헌 (38)
참고문헌 신청
Silva GHR, Daniel LA, Bruning H, Rulkens WH. Anaerobic effluent disinfection using ozone: Byproducts formation. Bioresour. Technol. 2010;101:6981-6986.
Gray NF. Ozone Disinfection. In: Percival SL, Yates MV, Williams DW, Chalmers RM, Gray NF, eds. Microbiology of Waterborne Diseases, 2nd ed. London: Academic Press; 2014. p. 599-615.
Zuma F, Lin J, Jonnalagadda SB. Ozone initiated disinfection kinetics of Escherichia coli in water. J. Environ. Sci. Health., Part A. 2009;44:48-56.
Long BW, Hulsey RA, Hoehn RC. Complementary uses of chlorine dioxide and ozone for drinking water treatment. Ozone Sci. Eng. 1999;21:465-76.
Mi?ik M, Knasmueller S, Ferk F, et al. Impact of ozonation on the genotoxic activity of tertiary treated municipal wastewater. Water Res. 2011;45:3681-3691.
Gray NF. Ozone Disinfection. In: Percival SL, Yates MV, Williams DW, Chalmers RM, Gray NF, eds. Microbiology of Waterborne Diseases, 2nd ed. London: Academic Press; 2014. p. 599-615.
Zuma F, Lin J, Jonnalagadda SB. Ozone initiated disinfection kinetics of Escherichia coli in water. J. Environ. Sci. Health., Part A. 2009;44:48-56.
Long BW, Hulsey RA, Hoehn RC. Complementary uses of chlorine dioxide and ozone for drinking water treatment. Ozone Sci. Eng. 1999;21:465-76.
Mi?ik M, Knasmueller S, Ferk F, et al. Impact of ozonation on the genotoxic activity of tertiary treated municipal wastewater. Water Res. 2011;45:3681-3691.
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UCI(KEPA) : I410-ECN-0101-2020-539-000545726