Synthesis, characterization and heavy metal removal efficiency of nickel ferrite nanoparticles (NFN’s)

Abstract

The heavy metals, such as Cr(VI), Pb(II) and Cd(II), in aqueous solutions are toxic even at trace levels and have caused adverse health impacts on human beings. Hence the removal of these heavy metals from the aqueous environment is important to protect biodiversity, hydrosphere ecosystems, and human beings. In this study, magnetic Nickel-Ferrite Nanoparticles (NFNs) were synthesized by co-precipitation method and characterized using X-Ray Diffraction (XRD), Energy Dispersive Spectroscopy (EDS) and Field Emission Scanning Electronic Microscopy (FE-SEM) techniques in order to confirm the crystalline structure, composition and morphology of the NFN’s, these were then used as adsorbent for the removal of Cr(VI), Pb(II) and Cd(II) from wastewater. The adsorption parameters under study were pH, dose and contact time. The values for optimum removal through batch-adsorption were investigated at different parameters (pH 3–7, dose: 10, 20, 30, 40 and 50 mg and contact time: 30, 60, 90, and 120 min). Removal efficiencies of Cr(VI), Pb(II) and Cd(II) were obtained 89%, 79% and 87% respectively under optimal conditions. It was found that the kinetics followed the pseudo second order model for the removal of heavy metals using Nickel ferrite nanoparticles.

Engineered magnetic oxides nanoparticles as efficient sorbents for wastewater remediation: a review

“…Narayana et al reported an optimized lead ions Pb (II) removal by a nanocomposite of inverse spinel nickel ferrite and reduced graphene oxide (Narayana et al 2022). Their results showed that the prepared sample could obtain a The removal of different heavy metals such as Cr (VI), Cd (II), and Pb (II) from wastewater was also reported by Khoso et al using magnetic Nickel-Ferrite Nanoparticles (NFNs) prepared by a co-precipitation method (Khoso et al 2021). They also studied the effect of many parameters, including pH, dose, and contact time, on the adsorption efficiency.…”

Spinel Ferrite Based Nanomaterials for Water Remediation Application

“…Besides the stabilization of spinel ferrites nanoparticles, these functional groups enhance the selectivity in aqueous solution by hyper-branching, ionic or electrostatic interactions. Many isotherms as well as kinetic models are utilized to verify the adsorption potential of various spinel ferrites nanoparticles and their composites [46]. Mainly most frequently utilized models for isotherm are Langmuir and Freundlich isotherm models and for kinetics pseudo first and pseudo second order kinetic models.…”

“…The aforementioned factors (Fig. 6) have already been well studied in regards to adsorption and removal of contaminants [30,46].…”

“…The polluted water is remediated with spinel ferrites nanoparticles and their composites, contaminants could be easily adsorbed to nanoparticles or composites and then separated from a matrix using an external magnetic field. The pure spinel ferrites nanoparticles, ferrites nanoparticles modified with metal oxide or any other appropriate organic functional groups are widely used for water remediation [46]. For example, Asadi et al synthesized CoFe2O4 and MnFe2O4 spinel ferrites nanoparticles prepared by co-precipitation method [77].…”

Synthesis of Carbon Nanotubes (CNTs) from Poultry Litter for Removal of Chromium Cr (VI) from Wastewater

“…It is also used as a low-cost renewable source for producing activated carbon by burning the litter to at least 700 o C resulting in the formation of a lattice-like carbon particle structure. Activated carbon is used for the adsorption of contaminants in wastewater [10,11], along with this several physico chemical and hydroponic techniques have been reported for metals removal [12][13][14].…”