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Experimental and computational assessment of 1,4-Dioxane degradation in a photo-Fenton reactive ceramic membrane filtration process
https://orcid.org/http://orcid.org/0000-0001-7885-8419
https://orcid.org/http://orcid.org/0000-0002-3364-5687
https://orcid.org/http://orcid.org/0000-0002-6624-9509
https://orcid.org/http://orcid.org/0000-0003-0196-2976
https://orcid.org/http://orcid.org/0000-0002-6787-2431
https://orcid.org/http://orcid.org/0000-0002-6114-3238
https://orcid.org/http://orcid.org/0000-0002-3652-0951
https://orcid.org/http://orcid.org/0000-0001-8413-0598
The present study evaluated a photo-Fenton reactive membrane that achieved enhanced 1,4-Dioxane removal performance. As a common organic solvent and stabilizer, 1,4-Dioxane is widely used in a variety of industrial products and poses negative environmental and health impacts. The membrane was prepared by covalently coating photocatalyst of goethite (α-FeOOH) on a ceramic porous membrane as we reported previously. The effects of UV irradiation, H2O2 and catalyst on the removal efficiency of 1,4-Dioxane in batch reactors were first evaluated for optimized reaction conditions, followed by a systematical investigation of 1,4-Dioxane removal in the photo-Fenton membrane filtration mode. Under optimized conditions, the 1,4-Dioxane removal rate reached up to 16% with combination of 2 mmol/L H2O2 and UV365 irradiation (2000 µW/cm2) when the feed water was filtered by the photo-Fenton reactive membrane at a hydraulic retention time of 6 min. The removal efficiency and apparent quantum yield (AQY) were both enhanced in the filtration compared to the batch mode of the same photo-Fenton reaction. Moreover, the proposed degradation pathways were analyzed by density functional theory (DFT) calculations, which provided a new insight into the degradation mechanisms of 1,4-Dioxane in photo-Fenton reactions on the functionalized ceramic membrane.
Experimental and computational assessment of 1,4-Dioxane degradation in a photo-Fenton reactive ceramic membrane filtration process
https://orcid.org/http://orcid.org/0000-0001-7885-8419
https://orcid.org/http://orcid.org/0000-0002-3364-5687
https://orcid.org/http://orcid.org/0000-0002-6624-9509
https://orcid.org/http://orcid.org/0000-0003-0196-2976
https://orcid.org/http://orcid.org/0000-0002-6787-2431
https://orcid.org/http://orcid.org/0000-0002-6114-3238
https://orcid.org/http://orcid.org/0000-0002-3652-0951
https://orcid.org/http://orcid.org/0000-0001-8413-0598
The present study evaluated a photo-Fenton reactive membrane that achieved enhanced 1,4-Dioxane removal performance. As a common organic solvent and stabilizer, 1,4-Dioxane is widely used in a variety of industrial products and poses negative environmental and health impacts. The membrane was prepared by covalently coating photocatalyst of goethite (α-FeOOH) on a ceramic porous membrane as we reported previously. The effects of UV irradiation, H2O2 and catalyst on the removal efficiency of 1,4-Dioxane in batch reactors were first evaluated for optimized reaction conditions, followed by a systematical investigation of 1,4-Dioxane removal in the photo-Fenton membrane filtration mode. Under optimized conditions, the 1,4-Dioxane removal rate reached up to 16% with combination of 2 mmol/L H2O2 and UV365 irradiation (2000 µW/cm2) when the feed water was filtered by the photo-Fenton reactive membrane at a hydraulic retention time of 6 min. The removal efficiency and apparent quantum yield (AQY) were both enhanced in the filtration compared to the batch mode of the same photo-Fenton reaction. Moreover, the proposed degradation pathways were analyzed by density functional theory (DFT) calculations, which provided a new insight into the degradation mechanisms of 1,4-Dioxane in photo-Fenton reactions on the functionalized ceramic membrane.
Experimental and computational assessment of 1,4-Dioxane degradation in a photo-Fenton reactive ceramic membrane filtration process
https://orcid.org/http://orcid.org/0000-0001-7885-8419
https://orcid.org/http://orcid.org/0000-0002-3364-5687
https://orcid.org/http://orcid.org/0000-0002-6624-9509
https://orcid.org/http://orcid.org/0000-0003-0196-2976
https://orcid.org/http://orcid.org/0000-0002-6787-2431
https://orcid.org/http://orcid.org/0000-0002-6114-3238
https://orcid.org/http://orcid.org/0000-0002-3652-0951
https://orcid.org/http://orcid.org/0000-0001-8413-0598
The present study evaluated a photo-Fenton reactive membrane that achieved enhanced 1,4-Dioxane removal performance. As a common organic solvent and stabilizer, 1,4-Dioxane is widely used in a variety of industrial products and poses negative environmental and health impacts. The membrane was prepared by covalently coating photocatalyst of goethite (α-FeOOH) on a ceramic porous membrane as we reported previously. The effects of UV irradiation, H2O2 and catalyst on the removal efficiency of 1,4-Dioxane in batch reactors were first evaluated for optimized reaction conditions, followed by a systematical investigation of 1,4-Dioxane removal in the photo-Fenton membrane filtration mode. Under optimized conditions, the 1,4-Dioxane removal rate reached up to 16% with combination of 2 mmol/L H2O2 and UV365 irradiation (2000 µW/cm2) when the feed water was filtered by the photo-Fenton reactive membrane at a hydraulic retention time of 6 min. The removal efficiency and apparent quantum yield (AQY) were both enhanced in the filtration compared to the batch mode of the same photo-Fenton reaction. Moreover, the proposed degradation pathways were analyzed by density functional theory (DFT) calculations, which provided a new insight into the degradation mechanisms of 1,4-Dioxane in photo-Fenton reactions on the functionalized ceramic membrane.
Experimental and computational assessment of 1,4-Dioxane degradation in a photo-Fenton reactive ceramic membrane filtration process
Front. Environ. Sci. Eng.
Xue, Shan (Autor:in) / Sun, Shaobin (Autor:in) / Qing, Weihua (Autor:in) / Huang, Taobo (Autor:in) / Liu, Wen (Autor:in) / Liu, Changqing (Autor:in) / Yao, Hong (Autor:in) / Zhang, Wen (Autor:in)
01.10.2021
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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