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- W2776644628 endingPage "1806" @default.
- W2776644628 startingPage "1790" @default.
- W2776644628 abstract "Abstract BACKGROUND The nuclear power industry and other high‐tech industries require increasing quantities of uranium and rare‐earth elements (REEs). There is a need for materials that can competitively recover these metals from ore leachates (such as produced in the leaching of Egyptian ores). RESULTS A sorbent based on the chemical grafting of glutamine moieties on a magnetic polyacrylonitrile support was synthesized: polyacrylonitrile, crosslinked with 10% divinyl benzene in the presence of magnetite, was chemically modified by a series of grafting steps to produce a magnetic polyglutamine sorbent (MGLU). The sorbent was characterized by titration, elemental analysis, X‐ray diffraction (XRD), thermogravimetric analysis, Fourier‐transform infra‐red (FTIR) spectrometry and scanning electron microscopy (SEM). The sorption properties were tested as a function of pH; the sorption isotherms were modeled using the Langmuir equation (maximum sorption capacities: 2 mmol U g ‐1 and up to 3.5 mmol g ‐1 for Nd(III) and Dy(III)). The equilibrium is achieved within 1 h of contact. Metal desorption and sorbent recycling are highly efficient using acidic solutions; sorption/desorption performance remains stable for a minimum of 5 cycles. MGLU was tested for metal binding in multi‐metal solutions at different pH values. CONCLUSION This sorbent could be used for the recovery of REEs and uranium from simulated ore leachates. © 2017 Society of Chemical Industry" @default.
- W2776644628 created "2018-01-05" @default.
- W2776644628 creator A5001409806 @default.
- W2776644628 creator A5033754707 @default.
- W2776644628 creator A5067862164 @default.
- W2776644628 date "2018-02-20" @default.
- W2776644628 modified "2023-09-27" @default.
- W2776644628 title "Magnetic glutamine-grafted polymer for the sorption of U(VI), Nd(III) and Dy(III)" @default.
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