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Magnetic nanoparticles (MNPs) of iron oxides are increasingly used in many laboratory and medical applications such as hyperthermia, magnetic resonance imaging or magnetic drug delivery. Popular in medical applications are magnetite (Fe3O4) and maghenite (?-Fe2O3) nanoparticles. They have gained a great interest because of their low toxicity, biocompatibility, simple separation methodology, and low cost of production. A novel magnetic hydrogel adsorbent based on gellan gum and Fe3O4 (GG/Fe3O4) was synthesized and ...