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Oxidant-reactive carbonous moieties in dissolved organic matter: Selective quantification by oxidative titration using chlorine dioxide and ozone.
Water Res. 2021 Dec 01; 207:117790.WR

Abstract

The application of oxidants for disinfection or micropollutant abatement during drinking water and wastewater treatment is accompanied by oxidation of matrix components such as dissolved organic matter (DOM). To improve predictions of the efficiency of oxidation processes and the formation of oxidation products, methods to determine concentrations of oxidant-reactive phenolic, olefinic or amine-type DOM moieties are critical. Here, a novel selective oxidative titration approach is presented, which is based on reaction kinetics of oxidation reactions towards certain DOM moieties. Phenolic moieties were determined by oxidative titration with ClO2 and O3 for five DOM isolates and two secondary wastewater effluent samples. The determined concentrations of phenolic moieties correlated with the electron-donating capacity (EDC) and the formation of inorganic ClO2-byproducts (HOCl, ClO2-, ClO3-). ClO2-byproduct yields from phenol and DOM isolates and changes due to the application of molecular tagging for phenols revealed a better understanding of oxidant-reactive structures within DOM. Overall, oxidative titrations with ClO2 and O3 provide a novel and promising tool to quantify oxidant-reactive moieties in complex mixtures such as DOM and can be expanded to other matrices or oxidants.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Houska J
Swiss Federal Institute of Aquatic Science and Technology (Eawag), 8600 Dübendorf, Switzerland; School of Architecture, Civil and Environmental Engineering (ENAC), Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland.
Salhi E
Swiss Federal Institute of Aquatic Science and Technology (Eawag), 8600 Dübendorf, Switzerland.
Walpen N
Swiss Federal Institute of Aquatic Science and Technology (Eawag), 8600 Dübendorf, Switzerland.
von Gunten U
Swiss Federal Institute of Aquatic Science and Technology (Eawag), 8600 Dübendorf, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, 8092 Zurich, Switzerland; School of Architecture, Civil and Environmental Engineering (ENAC), Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland. Electronic address: vongunten@eawag.ch.

MeSH

ChlorineChlorine CompoundsDissolved Organic MatterOxidantsOxidative StressOxidesOzone

Pub Type(s)

Journal Article

Language

eng

PubMed ID

34740166

Citation

Houska, Joanna, et al. "Oxidant-reactive Carbonous Moieties in Dissolved Organic Matter: Selective Quantification By Oxidative Titration Using Chlorine Dioxide and Ozone." Water Research, vol. 207, 2021, p. 117790.
Houska J, Salhi E, Walpen N, et al. Oxidant-reactive carbonous moieties in dissolved organic matter: Selective quantification by oxidative titration using chlorine dioxide and ozone. Water Res. 2021;207:117790.
Houska, J., Salhi, E., Walpen, N., & von Gunten, U. (2021). Oxidant-reactive carbonous moieties in dissolved organic matter: Selective quantification by oxidative titration using chlorine dioxide and ozone. Water Research, 207, 117790. https://doi.org/10.1016/j.watres.2021.117790
Houska J, et al. Oxidant-reactive Carbonous Moieties in Dissolved Organic Matter: Selective Quantification By Oxidative Titration Using Chlorine Dioxide and Ozone. Water Res. 2021 Dec 1;207:117790. PubMed PMID: 34740166.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Oxidant-reactive carbonous moieties in dissolved organic matter: Selective quantification by oxidative titration using chlorine dioxide and ozone. AU - Houska,Joanna, AU - Salhi,Elisabeth, AU - Walpen,Nicolas, AU - von Gunten,Urs, Y1 - 2021/10/22/ PY - 2021/08/06/received PY - 2021/10/15/revised PY - 2021/10/18/accepted PY - 2021/11/6/pubmed PY - 2021/12/15/medline PY - 2021/11/5/entrez KW - Chlorine dioxide KW - Dissolved organic matter KW - Electron-donating capacity KW - Electron-rich moieties KW - Molecular tagging KW - Oxidation byproducts KW - Oxidative titration KW - Ozone KW - Phenols SP - 117790 EP - 117790 JF - Water research JO - Water Res VL - 207 N2 - The application of oxidants for disinfection or micropollutant abatement during drinking water and wastewater treatment is accompanied by oxidation of matrix components such as dissolved organic matter (DOM). To improve predictions of the efficiency of oxidation processes and the formation of oxidation products, methods to determine concentrations of oxidant-reactive phenolic, olefinic or amine-type DOM moieties are critical. Here, a novel selective oxidative titration approach is presented, which is based on reaction kinetics of oxidation reactions towards certain DOM moieties. Phenolic moieties were determined by oxidative titration with ClO2 and O3 for five DOM isolates and two secondary wastewater effluent samples. The determined concentrations of phenolic moieties correlated with the electron-donating capacity (EDC) and the formation of inorganic ClO2-byproducts (HOCl, ClO2-, ClO3-). ClO2-byproduct yields from phenol and DOM isolates and changes due to the application of molecular tagging for phenols revealed a better understanding of oxidant-reactive structures within DOM. Overall, oxidative titrations with ClO2 and O3 provide a novel and promising tool to quantify oxidant-reactive moieties in complex mixtures such as DOM and can be expanded to other matrices or oxidants. SN - 1879-2448 UR - https://www.unboundmedicine.com/medline/citation/34740166/Oxidant_reactive_carbonous_moieties_in_dissolved_organic_matter:_Selective_quantification_by_oxidative_titration_using_chlorine_dioxide_and_ozone_ DB - PRIME DP - Unbound Medicine ER -

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