消毒剂
二氧化氯
氯
化学
孢子
臭氧
枯草芽孢杆菌
小学(天文学)
微生物学
环境化学
细菌
无机化学
有机化学
生物
天文
物理
遗传学
作者
Min Cho,Jae Hong Kim,Jeyong Yoon
出处
期刊:Water Research
[Elsevier]
日期:2006-08-01
卷期号:40 (15): 2911-2920
被引量:84
标识
DOI:10.1016/j.watres.2006.05.042
摘要
The sequential application of ozone, chlorine dioxide, or UV followed by free chlorine was performed to investigate the synergistic inactivation of Bacillus subtilis spores. The greatest synergism was observed when chlorine dioxide was used as a primary disinfectant followed by secondary disinfection with free chlorine. A lesser synergistic effect was observed when ozone was used as the primary disinfectant, but no synergism was observed when UV was used as the primary disinfectant. When free chlorine was used as the primary disinfectant (i.e., sequential application in the reverse order), the synergistic effect was shown only when chlorine dioxide was applied as the secondary disinfectant. The synergistic effect observed could be related to damage to the spore coat during primary disinfection, suggested by the loss of proteins from spores during disinfectant treatment. The greatest synergism observed by the chlorine dioxide/free chlorine pair suggested that common reaction sites might exist for these disinfectants. The concept of percent synergistic effect was introduced to quantitatively compare the extent of synergistic effects in the sequential disinfection processes.
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