Pilot-scale biofiltration of 1,4-dioxane at drinking water-relevant concentrations

McElroy, Amie; Ogles, Matthew E.; Hyman, Michael R.; Knappe, Detlef R.U.

doi:10.1016/j.watres.2023.119652

Cited by 5 publications

(1 citation statement)

References 18 publications

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“…Conventional drinking water treatments, such as activated carbon adsorption, air stripping, membrane ltration, classical oxidation and reverse osmosis, have limited effectiveness in removing 1,4-dioxane (Carrera et al, 2019;Godri Pollitt et al, 2019). Advanced oxidation and biological treatments have been reported as promising approaches for the remediation of 1,4-dioxane from contaminated water (Kikani et al, 2022;McElroy et al, 2023;Tang, 2023). However, large-scale implementation of these treatments is costly.…”

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confidence: 99%

Occurrence in France of 1,4-dioxane, an emerging pollutant of high concern in drinking water

Bach,

Boiteux,

Dauchy

2024

Preprint

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In recent years, 1,4-dioxane has emerged as a pollutant of increasing concern following widespread detection in the aquatic environment of several countries. This persistent contaminant with specific physical and chemical properties can be rapidly dispersed and transported to river banks, groundwater and drinking water. Given the limited data on its occurrence in France, it was considered necessary to assess the potential exposure of the French population to this compound in drinking water. An analytical method based on solid-phase extraction (SPE) combined with gas chromatography tandem mass spectrometry (GC-MS/MS) was developed and validated during this study with a limit of quantification (LOQ) of 0.15 µg/L. Recoveries in natural water matrices ranged from 113–117% with a relative bias not exceeding 17%. This method was used for a nationwide campaign at almost 300 sites, evenly distributed over 101 French départements (administrative units), including some that were overseas. 1,4-Dioxane was detected mainly (63%) in raw and treated water from sites associated with historical industrial practices related to the use of chlorinated solvents. The maximum concentration of 1,4-dioxane found in a raw water sample was 4.80 µg/L. Drinking water treatment plants using ozonation, granular activated carbon and chlorination have limited effectiveness in the removal of 1,4-dioxane. The results of this study are the first step towards bridging the knowledge gap in the occurrence of 1,4-dioxane in France. Further investigations are needed with priority being given to several sites where 1,4-dioxane has been found in substantial concentrations (> 1 µg/L).

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confidence: 99%

Occurrence in France of 1,4-dioxane, an emerging pollutant of high concern in drinking water

Bach,

Boiteux,

Dauchy

2024

Preprint

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France-Wide Monitoring of 1,4-Dioxane in Raw and Treated Water: Occurrence and Exposure Via Drinking Water Consumption

Bach,

Boiteux,

Dauchy

2024

Arch Environ Contam Toxicol

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In recent years, 1,4-dioxane has emerged as a pollutant of increasing concern following widespread detection in the aquatic environment of several countries. This persistent contaminant with specific physical and chemical properties can be rapidly dispersed and transported to river banks, groundwater and drinking water. Given the limited data on its occurrence in France, it was considered necessary to assess the potential exposure of the French population to this compound in drinking water. An analytical method based on solid-phase extraction (SPE) combined with gas chromatography tandem mass spectrometry (GC–MS/MS) was developed and validated during this study with a limit of quantification (LOQ) of 0.15 µg/L. Recoveries in natural water matrices ranged from 113 to 117% with a relative bias not exceeding 17%. This method was used for a nationwide campaign at almost 300 sites, evenly distributed over 101 French départements (administrative units), including some that were overseas. Of the 587 samples analysed, only 8% had a concentration that was greater than or equal to the LOQ. 1,4-Dioxane was detected mainly (63%) in raw and treated water from sites associated with historical industrial practices related to the use of chlorinated solvents. Concentrations of 1,4-dioxane ranging from 0.19 to 2.85 µg/L were observed in the raw water and from 0.18 to 2.46 µg/L in the treated water. Drinking water treatment plants using ozonation, granular activated carbon and chlorination have limited effectiveness in the removal of 1,4-dioxane. The results of this study are the first step towards bridging the knowledge gap in the occurrence of 1,4-dioxane in France.

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Treatability of odorous dioxanes/dioxolanes in source water: How does molecular flexibility and pre-oxidation affect odorant adsorption

Wang,

Du,

et al. 2024

Water Research

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Pilot-scale biofiltration of 1,4-dioxane at drinking water-relevant concentrations

Cited by 5 publications

References 18 publications

Occurrence in France of 1,4-dioxane, an emerging pollutant of high concern in drinking water

Occurrence in France of 1,4-dioxane, an emerging pollutant of high concern in drinking water

France-Wide Monitoring of 1,4-Dioxane in Raw and Treated Water: Occurrence and Exposure Via Drinking Water Consumption

Treatability of odorous dioxanes/dioxolanes in source water: How does molecular flexibility and pre-oxidation affect odorant adsorption

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