AI Article Synopsis
- - The study investigates how well different oxidants—ozone (O), peroxymonosulfate (PMS), and hydrogen peroxide (HO)—can inactivate the MS2 coliphage virus in water, which is important for preventing viral disease spread.
- - Results showed that to achieve a significant 4-log reduction in virus levels, all three oxidants needed specific doses and a contact time of 30 minutes, but ozone was the fastest, requiring only 0.5 minutes.
- - In secondary effluent, all three oxidants effectively inactivated the virus and removed dissolved organic matter, but ozone was found to be the most efficient option overall for disinfection.
Article Abstract
The control of viruses in water is critical to preventing the spread of infectious viral diseases. Many oxidants can inactivate viruses, and this study aims to systematically compare the disinfection effects of ozone (O), peroxymonosulfate (PMS), and hydrogen peroxide (HO) on MS2 coliphage. The effects of oxidant dose and contact time on disinfection were explored, as were the disinfection effects of three oxidizing agents in secondary effluent. The 4-log inactivation of MS2 coliphage required 0.05 mM O, 0.5 mM PMS, or 25 mM HO with a contact time of 30 min. All three oxidants achieved at least 4-log disinfection within 30 min, and O required only 0.5 min. In secondary effluent, all three oxidants also achieved 4-log inactivation of MS2 coliphage. Excitation-emission matrix (EEM) results indicate that all three oxidants removed dissolved organic matter synchronously and O oxidized dissolved organic matter more thoroughly while maintaining disinfection efficacy. Considering the criteria of oxidant dose, contact time, and disinfection efficacy in secondary effluent, O is the best choice for MS2 coliphage disinfection among the three oxidants.
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| http://dx.doi.org/10.1039/d3em00527e | DOI Listing |
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