Selective recovery of cerium (III) and iron (III) from nitrate medium by manganese substituted Cobalt Ferrite Magnetic Nanoparticles as low cost synthesized sorbent.

The facile synthesis of manganese-substituted cobalt ferrite (MCFO) nanoparticles (NPs) as a potential effective adsorbent for the adsorption of cerium(III) and iron(III) from the aqueous nitric acid medium is carried out in this work. The characterisation of the MCFO NPs was done using different spectroscopic tools such as Fourier transform infrared spectroscopy, X-ray diffraction, high-resolution transmission electron microscopy, and vibrating sample magnetometry. The effecting parameters for the adsorption of cerium(III) and iron(III) ions from HNO₃ acid using MCFO NPs were investigated using the batch technique. The obtained results indicate the effectiveness of MCFO NPs for recovery of cerium(III) and iron(III) ions from the nitric medium. The isotherm study showed that the adsorption process obeys the Langmuir model. In contrast, the kinetic study indicated that cerium(III) and iron(III) adsorption from an aqueous nitric acid medium was fitted to a pseudo-second-order model. The adsorption capacities were found to be 130 and 161 mg/g for cerium(III) and iron(III), respectively. The separation feasibilities of cerium(III) and iron(III) from an aqueous nitric acid solution were also discussed. [ABSTRACT FROM AUTHOR]