Synthesis and Characterization of Magnetic Fe3O4/Zeolite NaA Nanocomposite for the Adsorption Removal of Methylene Blue Potential in Wastewater Treatment

Abstract

In this research, the magnetic Fe3O4/zeolite NaA nanocomposite (Fe3O4/ZA), Fe3O4 nanoparticles, and zeolite NaA have been synthesized by facile hydrothermal methods for adsorption removal of methylene blue from aqueous solution. The as-synthesized Fe3O4/ZA nanocomposite was characterized by X-ray diffraction (XRD), MicroRaman analysis, Fourier-transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) spectroscopy, X-ray fluorescence (XRF), N2 adsorption isotherms (BET), and UV-VIS analysis. The results show that with a small weight loading of Fe3O4, the ∼3.3% Fe3O4/ZA sample exhibits a high adsorption capacity (∼40.36 mg·g−1) and removal efficiency (∼96.8%) compared to that of the zeolite NaA (∼32.99 mg·g−1 and 79.11%, respectively). Interestingly, the removal efficiency and the adsorption capacity increase rapidly with the increase of adsorption time (10–60 minutes) and Fe3O4 loading (∼3.3–9.3% wt.) in the Fe3O4/ZA composition. The adsorption mechanism of MB molecules of the Fe3O4/ZA can be addressed at the combination of the interaction between active sites on the surfaces and edges of the invert spinel ferrite Fe3O4 nanoparticles and zeolite NaA with MB molecules. Our approach provides a simple, efficient, and scalable synthesis process that render practical applications of the magnetic Fe3O4/ZA nanocomposite as a lower-cost adsorbent for wastewater treatment.

Novel Magnetite Nanocomposites (Fe3O4/C) for Efficient Immobilization of Ciprofloxacin from Aqueous Solutions through Adsorption Pretreatment and Membrane Processes

“…The pseudo 1st order (Equation ( 3)) [19], 2nd order [20] (Equation ( 4)) and intraparticle diffusion [21] (Equation ( 5)) models were applied to describe the kinetics of selected antibiotic on prepared composite: ln (q e − q t ) = ln q e − k 1 t…”

“…The traces of pollutant left in the solution (as adsorption processes are not 100% efficient) would not affect the membrane permeate flux too much as compared to naked membrane and activated carbon/membrane hybrid operations. Although a reduction in surface area occurred with impregnation of iron oxide over activated carbon but still its effectiveness in foul controlling was more as compared to its counterpart-activated carbon [8,[16][17][18][19].…”

Multi-Stimuli-Responsive Janus Hollow Polydopamine Nanotubes

“…The highest intensity peak indicating (311) planes was used to obtain the average grain size of nanoparticles. According to the Scherrer equation, the grain size can be calculated from where τ is the average grain size and is equal to or smaller than the particle size; K is the shape factor with a value of 0.94 for Fe 3 O 4 with a cubic crystal structure; λ is the incident X-ray wavelength, 1.54 Å; β indicates the full width at half-maximum (in radians) of the highest intensity of the peak for (311) planes, and θ is the Bragg angle for the peak. The average grain size of the Fe 3 O 4 nanoparticles synthesized in the presence of PDA nanotubes was 8.62 nm.…”

Experimental and Modelling Analysis of the Hyperthermia Properties of Iron Oxide Nanocubes

“…Fe 3 O 4 NPs were synthesized by hydrothermal method [ 41 ]. The molar ratio of Fe 2+ /Fe 3+ was adjusted to 1:2, and the iron salt solution was prepared by using deoxygenated deionized water.…”