Microwave synthesized iron oxide nanoparticles and microparticles were used to prepare a magnetically responsive biosorbent from moss for the rapid and efficient removal of Co ions and thioflavin T (TT). The biocomposite was extensively characterized using Fourier transformed infrared (FTIR), XRD, SEM, and EDX techniques. The magnetic biocomposite showed very good adsorption properties toward Co ions and TT e.g., rapid kinetics, high adsorption capacity (218 μmol g for Co and 483 μmol g for TT), fast magnetic separation, and good reusability in four successive adsorption-desorption cycles. Besides the electrostatic attraction between the oxygen functional moieties of the biomass surface and both Co and TT ions, synergistic interaction with the -FeOH groups of iron oxides also participates in adsorption. The obtained results indicate that the magnetically responsive biocomposite can be a suitable, easily separable, and recyclable biosorbent for water purification.
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| http://dx.doi.org/10.3390/ma13163619 | DOI Listing |
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