Measurement of the initial phase of ozone decomposition in water and wastewater by means of a continuous quench-flow system: application to disinfection and pharmaceutical oxidation

Water Research
Marc-Olivier BuffleUrs von Gunten

Abstract

Due to a lack of adequate experimental techniques, the kinetics of the first 20s of ozone decomposition in natural water and wastewater is still poorly understood. Introducing a continuous quench-flow system (CQFS), measurements starting 350 ms after ozone addition are presented for the first time. Very high HO. to O3 exposures ratios (Rct=integralHO.dt/integralO3dt) reveal that the first 20s of ozonation present oxidation conditions that are similar to ozone-based advanced oxidation processes (AOP). The oxidation of carbamazepine could be accurately modeled using O3 and HO. exposures measured with CQFS during wastewater ozonation. These results demonstrate the applicability of bench scale determined second-order rate constants for wastewater ozonation. Important degrees of pharmaceutical oxidation and microbial inactivation are predicted, indicating that a significant oxidation potential is available during wastewater ozonation, even when ozone is entirely decomposed in the first 20s.

References

Jan 5, 2000·Applied and Environmental Microbiology·M Goñi-UrrizaC Quentin
Apr 2, 2003·Environmental Science & Technology·Marc M HuberUrs von Gunten
Apr 12, 2003·Environmental Science & Technology·Karen L ThorpeCharles R Tyler
Aug 21, 2003·Organic & Biomolecular Chemistry·Eino Mvula, Clemens von Sonntag
Oct 28, 2004·Environmental Science & Technology·Marc-Olivier BuffleUrs von Gunten
Jun 30, 2005·Environmental Science & Technology·Marc M HuberUrs von Gunten

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Citations

Apr 16, 2013·The Science of the Total Environment·Maria G AntoniouHenrik Rasmus Andersen
Jun 20, 2012·Water Research·Javier Santiago-MoralesRoberto Rosal
Aug 3, 2010·Journal of Hazardous Materials·Roberto RosalEloy García-Calvo
Oct 10, 2009·Journal of Hazardous Materials·J Rivera-UtrillaI Bautista-Toledo
Apr 28, 2009·Journal of Hazardous Materials·Roberto RosalEloy García-Calvo
Sep 2, 2008·Environment International·Maria KlavariotiDespo Kassinos
Dec 5, 2014·Environmental Science & Technology·Ines ZuckerHadas Mamane
Jan 31, 2015·Water Research·Xianfeng HuangBihuang Xie
Dec 4, 2010·Bioresource Technology·Smriti TripathiB D Tripathi
Mar 9, 2013·Environmental Science & Technology·Peter J VikeslandWilliam A Arnold
Mar 6, 2007·Water Research·Eric C WertShane A Snyder
Jul 17, 2016·Environmental Science and Pollution Research International·Brahmi Mounaouer, Hassen Abdennaceur
Aug 14, 2009·Environmental Science & Technology·Eric C WertShane A Snyder
Feb 13, 2018·Environmental Monitoring and Assessment·Liang JingBaiyu Zhang
Oct 26, 2009·Applied Physics Letters·Han S UhmBaik L Seong
Mar 20, 2021·Scientific Reports·Guhankumar PonnusamyJayaprakash Saththasivam

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