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Selective magnetic GMA based potential sorbents for molybdenum and rhenium sorption
Magnetic macroporous crosslinked copolymer glycidyl methacrylate (GMA) and ethylene glycol dimethacrylate (EGDMA) samples with different magnetite content were prepared by suspension copolymerization and functionalized with diethylene triamine. Samples were characterized by elemental analysis, mercu...
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Published in: | Journal of alloys and compounds 2017-05, Vol.705, p.38-50 |
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Main Authors: | , , , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | Magnetic macroporous crosslinked copolymer glycidyl methacrylate (GMA) and ethylene glycol dimethacrylate (EGDMA) samples with different magnetite content were prepared by suspension copolymerization and functionalized with diethylene triamine. Samples were characterized by elemental analysis, mercury porosimetry, Fourier transform infrared spectroscopy (FTIR) analysis, scanning electron microscopy with energy-dispersive X-ray spectroscopy, transmission electron microscopy, SQUID magnetometry and X-ray photoelectron spectroscopy (XPS). The selected amino-functionalized sample was tested as a potential sorbent for the Mo(VI) and Re(VII) oxyanions from aqueous solutions. The influence of pH, ionic strength and possible interfering of cations and anions was investigated. Equilibrium data were analyzed with Langmuir, Freundlich and Tempkin adsorption isotherm models. Sorption studies were carried out in a batch competitive experiments, in the pH range 1–8, at 298 K. Obtained results indicate that 92% of Re(VII) and 98% of Mo(VI) were sorbed at pH 2.
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•Magnetic macroporous copolymer samples were prepared by suspension copolymerization.•Amino-functionalized sample was tested as Mo(VI) and Re(VII) oxyanions sorbent.•Sorption was studied in batch competitive experiments, in the pH range 1–8, at 298 K.•Results indicate that 92% of Re(VII) and 98% of Mo(VI) were sorbed at pH 2. |
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ISSN: | 0925-8388 1873-4669 |
DOI: | 10.1016/j.jallcom.2017.02.108 |