Investigation on ferrite immobilized alginate magnetic nanocomposite beads for the adsorptive removal of Prussian blue

This research article was investigates the Prussian blue dye removal from aqueous solution using immobilized nano ferrite (Zn-Co-Fe) in alginate biopolymer. The preparation of alginate beads was done by metal encapsulation method using CaSO₄ as crosslinking agent. The Prussian blue dye removal efficiency was ascertained with various isotherm equations such as Langmuir and Freundlich. Isotherm equations are not providing physical, chemical and feasibility aspects. So, these were investigated with pseudo-first order, pseudo-second order kinetic equations. The mode of diffusion evaluated with intraparticle diffusion and thermodynamic feasibility was tested with the equations of enthalpy, Gibbs free energy, and entropy. The experimentally driven results were implies the Prussian blue removal process was feasible in all aspects. Moreover, the predicted diffusion parameters revealed that the interaction between Prussian blue and nanocomposite beads was predominant. The surface morphology, examined using a Scanning Electron Microscope, showed that the Prussian blue strongly covered on outer surface of the beads. The FTIR proves the Prussian blue dye was strappingly loaded on the surface of nanocomposite beads. The TGA curve revealed the synthesized beads has an exceptional temperature resistance.