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- W4308483802 abstract "• A novel α-FeOOH@BC composite was designed to efficiently separate Tl from synthetic industrial wastewater. • Distribution coefficients higher than 5000 mL/g were achieved for wide pH range (5.0–11.0). • Tl separation mechanism consists of electrostatic attraction, ion exchange and complexation. • α-FeOOH@BC may serve as a prospective separation material for Tl(I) containing wastewater. Thallium (Tl) is an untraditional toxic metal. Emerging Tl pollution has received increasing concerns. Despite its extreme biotoxicity, Tl is an irreplaceable element for specific high-tech fields ( e.g. , superconductors, semiconductors, and optical fibers) due to its peculiar physio-chemical properties. Besides, Tl has been also regarded as critical strategic metal owing to its low abundance and scarcity in the earth’s crust. Herein, a novel composite of α-FeOOH@BC was facilely synthesized via biochar modification with environmentally abundant iron oxides (α-FeOOH) to separate Tl(I) from wastewater. The results showed that overall large distribution coefficient values ( K d > 5000 mL/g) of Tl separation by α-FeOOH@BC in a wide pH range (5.0–11.0) were achieved, suggesting a generally promising Tl separation capacity. Multiple characterizations with Scanning Electron Microscope-Energy Dispersive Spectrometer (SEM-EDS), Fourier Transform Infrared Spectroscopy (FTIR), X-ray Diffraction (XRD) and X-ray Photoelectron Spectroscopy (XPS) indicate that the dominant Tl separation mechanisms included electrostatic attraction, ion exchange and complexation. These findings indicate that the α-FeOOH@BC material may have important application in Tl separation from industrial wastewaters, which are usually moderately acidic with pH values ranging from 5.0 to 7.0. This study offers novel perspectives on using environmental abundant iron oxides modified biochar for easy and fast separation of Tl from industrial wastewater. All these findings can facilitate to develop waste-to-resources strategy for recycling Tl in the loop of circular economy and industrial symbiosis." @default.
- W4308483802 created "2022-11-12" @default.
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- W4308483802 date "2023-02-01" @default.
- W4308483802 modified "2023-10-16" @default.
- W4308483802 title "Thallium separation from wastewater using α-FeOOH@Biochar: Efficacy and mechanism" @default.
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- W4308483802 doi "https://doi.org/10.1016/j.seppur.2022.122532" @default.
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