Dioxiranes Generated in Situ from Pyruvates and Oxone as Environmentally Friendly Oxidizing Agents for Disinfection

Dioxiranes generated in situ from pyruvates (α-keto esters) and Oxone have been found to be environmentally friendly oxidizing agents for disinfection. These oxidizing agents were highly effective for destruction of various strains of bacteria, fungi, and bacterial endospores in a wide temperature r...

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Bibliographic Details
Published in:Environmental science & technology 2006-01, Vol.40 (2), p.625-630
Main Authors: Wong, Man-Kin, Chan, Tak-Chung, Chan, Wai-Yee, Chan, Wing-Kei, Vrijmoed, Lilian L. P, O'Toole, Desmond K, Che, Chi-Ming
Format: Article
Language:English
Subjects:
Antibacterial activity
Applied sciences
Aqueous solutions
Bacillus cereus
Bacteria
Disinfectants - chemistry
Disinfectants - pharmacology
Disinfection & disinfectants
Drinking water and swimming-pool water. Desalination
Epoxy Compounds - chemistry
Epoxy Compounds - pharmacology
Exact sciences and technology
Fungi
General purification processes
Oxidants - chemistry
Penicillium - drug effects
Pollution
Pyruvates - chemistry
Staphylococcus aureus - drug effects
Sulfuric Acids - chemistry
Wastewaters
Water treatment and pollution
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Summary:Dioxiranes generated in situ from pyruvates (α-keto esters) and Oxone have been found to be environmentally friendly oxidizing agents for disinfection. These oxidizing agents were highly effective for destruction of various strains of bacteria, fungi, and bacterial endospores in a wide temperature range with exceptional stability. Notably, by using an aqueous solution of methyl pyruvate (1a) and Oxone/NaHCO3, complete destruction of bacteria such as Staphylococcus aureus and fungus Penicillium corylophilum was achieved within 5 min at 20 °C at neutral pH. Highly chemical-resistant bacterial endospores of Bacillus cereus could also be destroyed. The high antibacterial activity of 1a could be attributed to its strong electron-withdrawing α-ester group.
ISSN:0013-936X
1520-5851
DOI:10.1021/es050688l