Synthesis of polymeric ferrite composites (Ni-CoFe2O4/Chitosan, Zn-NiFe2O4/Starch, Co-NiZnFe2O4/Polyaniline, Ni doped CrZnFe2O4/Alginate, and Cr doped ZnCoFe2O4/PVA) for the removal of reactive golden yellow-160 dye from wastewater.

One of the most significant environmental problems facing the entire planet today is water contamination, which is caused by the increasing industry and urbanization. The present study involves the synthesis of polymeric ferrite composites Ni-CoFe 2 O 4 /Chitosan, Zn-NiFe 2 O 4 /Starch, Co-NiZnFe 2 O 4 /Polyaniline, Ni doped CrZnFe 2 O 4 /Alginate, and Cr doped ZnCoFe 2 O 4 /PVA for the removal of Golden Yellow-160 dye. The polymeric ferrite composites were characterized using Scanning electron microscopy (SEM), X-ray Diffraction (XRD), and Fourier transmission infrared spectroscopy (FT-IR) which showed the surface morphology, crystallinity, chemical structure and thermal stability of the composites. To get the optimal removal, different parameters like pH, composite dose, contact time, temperature and initial dye concentration were optimized. Different equilibrium and kinetic models were used to check the nature of process and reaction rate of sorption. Thermodynamic were studied to check the feasibility of reaction. The effect of presence of various electrolytes NaCl, CaCl 2.2 H 2 O and AlCl 3.6 H 2 O was also studied. Effect of presence of different metals and surfactants was also studied which cause reduction in adsorption of dyes. For large scale, the effects of bed height, flow rate, and initial dye concentration were examined in column study. Different eluents were used for the desorption study of reactive dyes to check the reusability of process. [Display omitted] • Langmuir adsorption isotherm displayed chemisorption nature of adsorption. • Both pseudo-first-order and pseudo-second-order showed the satisfactorily fitness. • Zn-NiFe 2 O 4 /Starch showed the highest removal among all the composites. • The dye exclusion showed the endothermic nature of reaction. • The current study applied for the removal of dye at large scale using a column. [ABSTRACT FROM AUTHOR]