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- W3123169618 endingPage "128696" @default.
- W3123169618 startingPage "128696" @default.
- W3123169618 abstract "• Functionalized diatomite with Fe 0 /iron oxide nanoparticles was synthesized. • Magnetic Fe 0 /FeO x -DE showed a maximum adsorption capacity of 37.0 mg P/g. • Except SO4 2− , other coexisting anions promoted the P adsorption of Fe 0 /FeOx-DE. • Chemical precipitation and ligand exchange dominated the adsorption mechanism. A mild hydrothermal method to functionalize diatomite with Fe 0 /iron oxide nanoparticles (Fe 0 /FeO x -DE) was attempted and its performance as a new magnetic adsorbent to recover phosphorus from water was investigated in batch studies. The method effectively improved the dispersion of nanoparticles, and the adsorption capacity increased from 3.51 mg P/g for raw diatomite to 37.0 mg P/g for Fe 0 /FeO x -DE. Transmission electron microscope (TEM) and X-ray diffraction (XRD) showed that Fe 0 /FeO x nanoparticles had been successfully loaded onto the diatomite. Solution pH largely affected phosphorus recovery efficiency, it had a better effect around pH 7–9. Data of adsorption experiments were fitted well to Langmuir isotherm model and pseudo-second-order kinetic model, and the process was spontaneous and endothermic at thermodynamic study. After Fe 0 /FeO x -DE was regenerated three times by NaOH solution, the phosphorus binding percentage remained at 66.8%. Fe 0 /FeO x -DE also displayed an excellent selectivity for P in examination of coexisting anions except SO 4 2- . The adsorption mechanism was interpreted by electrostatic attraction, chemical precipitation and ligand exchange. This study on immobilising Fe 0 /iron oxide particles onto diatomite opens a new avenue for the practical application of iron-loaded compounds and the phosphate-loaded composites can be used as a fertilizer or soil amendment directly to achieve phosphorus recovery." @default.
- W3123169618 created "2021-02-01" @default.
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- W3123169618 date "2021-05-01" @default.
- W3123169618 modified "2023-10-16" @default.
- W3123169618 title "Magnetic Fe0/iron oxide-coated diatomite as a highly efficient adsorbent for recovering phosphorus from water" @default.
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- W3123169618 doi "https://doi.org/10.1016/j.cej.2021.128696" @default.
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