NOM fractionation by HPSEC-DAD-OCD for predicting trihalomethane disinfection by-product formation potential in full-scale drinking water treatment plants
| العنوان: | NOM fractionation by HPSEC-DAD-OCD for predicting trihalomethane disinfection by-product formation potential in full-scale drinking water treatment plants |
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| المؤلفون: | Meritxell Valenti-Quiroga, Pepus Daunis-i-Estadella, Pere Emiliano, Fernando Valero, Maria J. Martin |
| المساهمون: | Agencia Estatal de Investigación |
| المصدر: | Water Research, 2022, vol. 227, art.núm. 119314 Articles publicats (D-EQATA) Valentí Quiroga, Meritxell Daunis-i-Estadella, Pepus Emiliano, Pere Valero, Fernando Martín, María José 2022 NOM fractionation by HPSEC-DAD-OCD for predicting trihalomethane disinfection by-product formation potential in full-scale drinking water treatment plants Water Research 227 art.núm. 119314 DUGiDocs – Universitat de Girona instname |
| بيانات النشر: | Elsevier, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Obsessive-Compulsive Disorder, Pollutants, Environmental Engineering, Halogenation, Drinking Water, Ecological Modeling, Water -- Purification, Drinking water -- Purification, Water -- Purification -- Chlorination, Pollution, Water Purification, Disinfection, Contaminants, Humans, Aigua -- Depuració -- Cloració, Waste Management and Disposal, Aigua potable -- Depuració, Water Pollutants, Chemical, Aigua -- Depuració, Trihalomethanes, Disinfectants, Water Science and Technology, Civil and Structural Engineering |
| الوصف: | Chlorination is a common method for water disinfection; however, it leads to the formation of disinfection by-products (DBPs), which are undesirable toxic pollutants. To prevent their formation, it is crucial to understand the reactivity of natural organic matter (NOM), which is considered a dominant precursor of DBPs. We propose a novel size exclusion chromatography (SEC) approach to evaluate NOM reactivity and the formation potential of total trihalomethanes-formation potentials (tTHMs-FP) and four regulated species (i.e. CHCl3, CHBrCl2, CHBr2Cl, and CHBr3). This method combines enhanced SEC separation with two analytical columns working in tandem and quantification of apparent molecular weight (AMW) NOM fractions using C content (organic carbon detector, OCD), 254-nm spectroscopic (diode-array detector, DAD) measurements, and spectral slopes at low (S206-240) and high (S350-380) wavelengths. Links between THMs-FP and NOM fractions from high performance size exclusion chromatography HPSEC-DAD-OCD were investigated using statistical modelling with multiple linear regressions for samples taken alongside conventional full-scale as well as full- and pilot-scale electrodialysis reversal and bench-scale ion exchange resins. The proposed models revealed promising correlations between the AMW NOM fractions and the THMs-FP. Methodological changes increased fractionated signal correlations relative to bulk regressions, especially in the proposed HPSEC-DAD-OCD method. Furthermore, spectroscopic models based on fractionated signals are presented, providing a promising approach to predict THMs-FP simultaneously considering the effect of the dominant THMs precursors, NOM and Br This study was supported by the WATSproof (CTM2017-83598-R) and ShERLOcK projects (PID2020-112615RA-I00), financed by the Ministerio de Ciencia e Innovación (Spain). MVQ thanks AGAUR from the Generalitat de Catalunya for a predoctoral grant under the program FI_SDUR 2020-00330. LEQUIA has been recognized as a consolidated research group by the Catalan government (2017-SGR-1552). Open access funding was provided thanks to the CRUE-CSIC agreement with Elsevier |
| وصف الملف: | application/pdf |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d0a91ed3e1220cafcd5a9f04543db6a9 http://hdl.handle.net/10256/22072 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....d0a91ed3e1220cafcd5a9f04543db6a9 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |