Spinel Ferrite Composites to be the Next Step in Adsorbent Technology for Water Purification.
Spinel ferrite magnetic materials are another important class of composite metal oxides containing ferric ions, which possess excellent magnetic characteristics, high specific surface area. Another important feature for these composites is the ease with which they can be modified or functionalized. As a result of these multifunctional properties, affordability, and magnetic separation capability, SF adsorbents are a top choice for water purification applications that require high adsorption efficiencies and rapid kinetics. As an important member of the ferrite family, MnFe2O4 (MFO) has attracted noteworthy industry interest due to its strong magnetic and electromagnetic properties. Nanoparticles, nanostructures, and thin films of MnFe2O4 show diverse properties, such as, high anisotropy constant, size-dependent saturation magnetization, super spin glass state, super Para-magnetism, and high Curie temperature. Recently, it was found that MnFe2O4 magnetic Nano particles were effectively used an excellent adsorbent for the removal of the Azo dye Acid Red B from water. Zinc ferrite nanoparticles prepared by one-pot microwave assisted combustion in the solid state and later encapsulated in an organoclay resulted in a magnetic heterostructured adsorbent, with increased adsorption of organic dye pollutants from an aqueous solution.
Dye pollution in waste waters causes serious environmental and health risk, legislation problems and is a serious challenge to environmental scientists. These composites can hence serve cheaper alternatives to the existing chemicals used in water purification and will open up a differentiated product in the existing adsorbent market for the manufacturers.
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