Synthesis and Characterization of Magnetic Nickel Ferrite-Modified Montmorillonite Nanocomposite For Cu (II) and Zn (II) Ions Removal From Wastewater

Abstract

For the adsorption of copper (II) and zinc (II) ions from polluted water, an efficient inexpensive nanoadsorbent; nickel ferritemodified montmorillonite nanocomposite was synthesized by co-precipitation of the mechano-chemically modified montmorillonite with the salts of nickel and iron. The natural MMT, modified MMT, and the synthesized nickel ferritemodified montmorillonite (NiFe2O4-Mod MMT) nanoadsorbent were characterized by several techniques including Fourier transform infrared spectroscopy, X-ray diffraction, transmission electron microscopy, energy-dispersive X-ray, surface area analysis, saturation magnetization, and surface zeta potential. Batch studies were carried out on the effect of various parameters including contact time, nanocomposite dosage, solution pH, metal ion initial concentration, and temperature on the adsorption process to optimize its conditions. The equilibrium state was reached after 60 min and 90 min of reaction for Cu (II) and Zn (II) ions, respectively. The optimum conditions were 0.1 g adsorbent dose, pH 5, 13 mg/L initial metal ion concentration and 298 K temperature for copper (II) adsorption and 0.1 g adsorbent dose, pH 6, 6 mg/L initial metal ion concentration, and 298 K temperature for zinc (II) adsorption. Among the designed kinetic and equilibrium models, the pseudo-second-order kinetic model and Langmuir adsorption isotherm model have controlled the adsorption process for both metal ions. Furthermore, the adsorption mechanism and the reproducibility of the nanoadsorbent were investigated. The maximum adsorption efficiency was 99.23% and 91.67% of copper (II) and zinc (II) ions, respectively.

Bioresoursed Nano-SiO2/Styrene-Co-Vinyl Acetate Nano-Composite: Synthesis, Characterization and Evaluation as Nano-Pour Point Depressant and Paraffin Inhibitor for Waxy Crude Oil

“…Gel permeation chromatography (GPC) was used to evaluate the average molecular weights (Mw and Mn) of the prepared PSV copolymer using GPC-Water 2410 with a refractive index detector [38][39][40]. Transmission electron microscopy (TEM, Model JEM-200CX, JEOL 2100, Japan) operated at 200 kV was done for the extracted SiO 2 to investigate its size and morphology [53].…”

“…2) shows the FTIR-bands of Si-O-Si asymmetry stretching, Si-O symmetric bending and stretching, and the H-O-H bending vibration characteristics of silica which detected, respectively at 1089 cm −1 , 467 cm −1 and 794 cm −1 , and at 1637 cm −1 [3, 12,54]. The asymmetric stretching and bending vibrations of silanol OH groups are detected at 3494 cm −1 [60] while the bending mode of Si-O and the adsorbed water band is observed at 475 cm −1 and 963 cm −1 [3, 53,55]. The successful copolymerization of PSV was elucidated by FTIR spectroscopy (Fig.…”

Phenol-Formaldehyde/Pyrazole Composite: Synthesis, Characterization, and Evaluation of its Chromate Removal Efficiency

“…Wastewater containing Cr(VI) and other metal ions has been subject to various treatments, such as carbon treatment, 7 filtration by membrane, 8 chemical precipitation, 9 ion exchange, 10 and adsorption. 11 Regarding Cr(VI) removal, 12 low cost, 13 absence of secondary contamination, 14 and adaptability of operation, adsorption is considered the best alternative technique for eliminating Cr(VI). Although pH, temperature, and pollutant concentration affect the efficiency and costeffectiveness of the adsorption process, the adsorbent chosen is essential.…”

Facile Synthesis and Characterization of Magnetic Biopolymer Nanocomposite and Its Application for Preparing Novel Bioasphalt Coating Binder

“…The chemical modification of chitosan with new grafts and converting their molecular sizes from macro to nanocomposites were carried out to improve their metal protection applications [18,19]. Fabrication of nanocomposite polymers donates unique mechanical properties in comparison to pure polymers or micro and macro composites [20][21][22]. Behnam Amini approved that the existence of nanoclay (NC) in SBR improves storage stability, and increases the indirect strength of asphalt mixture [23].…”