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- W4295350336 endingPage "158754" @default.
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- W4295350336 abstract "Arsenate (As(V)) in municipal wastewater leads to a public health problem due to its contamination of natural water sources. Here, we proposed to use sewer pipe made of TiO2-doped cementitious composite (TCC) for As(V) removal from municipal wastewater. The optimum composition of TCC, the performance for As(V) removal in the simulated sewer system, and the molecular-level As(V) removal mechanisms were investigated. To obtain the optimum composition, variables were adjusted to maximize the As(V) removal using TCC. Results show that the TiO2 and water contents were the dominant factors. Simulated sewer pipes made of TCC removed As(V) from 100 μg/L to <10 μg/L, which performed better than plain cementitious composite. Moreover, extended X-ray absorption fine structure (EXAFS) analysis indicates that both precipitation and adsorption contribute to the As(V) removal by TCC, while the adsorption is more significant with a lower As(V) concentration (i.e., 1 mg/L). This is the first study evaluating the feasibility to apply TCC for As(V) removal from sewer wastewater. The optimized composition, simulation results, and molecular-level mechanism gained from this study are useful to the future design of TCC for As(V) removal, especially for sewer systems." @default.
- W4295350336 created "2022-09-13" @default.
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- W4295350336 date "2023-01-01" @default.
- W4295350336 modified "2023-09-23" @default.
- W4295350336 title "Arsenate removal using titanium dioxide-doped cementitious composites: Mixture design, mechanisms, and simulated sewer application" @default.
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- W4295350336 doi "https://doi.org/10.1016/j.scitotenv.2022.158754" @default.
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