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	Rapidly eliminating pathogenic microorganisms in large air space using spraying center dot OH radicals
	Bai, Mindong ; Bai MD(白敏冬) ; Zhang, Zhitao ; Tian, Yiping ; Bai, Mindi
	2012-04
关键词	BIOLOGICAL WARFARE AGENTS HYDROXYL RADICALS HYDROGEN-PEROXIDE SALICYLIC-ACID WATER DECONTAMINATION OZONE
英文摘要	A new method for rapidly eliminating pathogenic microorganisms in large air space using spraying center dot OH radicals is presented in this paper With a physical method of strong electric-field discharge, large numbers of center dot OH radicals were produced by the oxygen activated particles of O-2(+), O(D-1), O(P-3), etc., and the introducing reagent HO2-. The gram-positive bacteria Bacillus subtilis, the gram-negative bacteria Serratia marcescens, and Bacillus spores were used for the eliminating experiments. Results show that the different microorganisms were rapidly killed by center dot OH radicals with a concentration of 0.8 mg/L and spraying density of 21 mu L/m(2) within 4 sec. Cell morphological changes were also observed under microscope. The cells of B. subtilis and Bacillus spores in their cellular wall, cellular membrane, or cell protoplasm were greatly destroyed when being exposed to a killing dosage of center dot OH radicals. Implications: Increasing air spread of pathogenic microorganisms has prompted serious concerns for their threat to environmental safety. However, there is no an effective method to rapidly eliminate these harmful microorganisms in large air space. In comparison with conventional disinfectants, advanced oxidation technology (AOT) based on hydroxyl radicals (center dot OH) has excellent advantages. The main problem of how to produce the center dot OH radicals with high concentration and large production is solved by a physical method of strong electric-field discharge. A new method for rapidly eliminating pathogenic microorganisms in large air space using spraying center dot OH radicals is described in this paper.; National Natural Science Foundation of China [NSFC: 61025001, 50877005]; Education Ministry of China [2012AA062609]
语种	英语
出版者	TAYLOR & FRANCIS INC
内容类型	期刊论文
源URL	[http://dx.doi.org/10.1080/10473289.2012.654896]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Bai, Mindong,Bai MD,Zhang, Zhitao,et al. Rapidly eliminating pathogenic microorganisms in large air space using spraying center dot OH radicals[J],2012.
APA	Bai, Mindong,白敏冬,Zhang, Zhitao,Tian, Yiping,&Bai, Mindi.(2012).Rapidly eliminating pathogenic microorganisms in large air space using spraying center dot OH radicals..
MLA	Bai, Mindong,et al."Rapidly eliminating pathogenic microorganisms in large air space using spraying center dot OH radicals".(2012).

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