Adsorptive Removal of Cd, Cu, Ni and Mn from Environmental Samples Using Fe3O4-Zro2@APS Nanocomposite: Kinetic and Equilibrium Isotherm Studies

Abstract

In this study, Fe3O4-ZrO2 functionalized with 3-aminopropyltriethoxysilane (Fe3O4-ZrO2@APS) nanocomposite was investigated as a nanoadsorbent for the removal of Cd(II), Cu(II), Mn (II) and Ni(II) ions from aqueous solution and real samples in batch mode systems. The prepared magnetic nanomaterials were characterized using X-ray powder diffraction (XRD), scanning electron microscopy/energy dispersion x-ray (SEM/EDX) Fourier transform infrared spectroscopy (FTIR) and transmission electron microscopy (TEM). Factors (such as adsorbent dose and sample pH) affecting the adsorption behavior of the removal process were studied using the response surface methodology. Under optimized condition, equilibrium data obtained were fitted into the Langmuir and Freundlich isotherms and the data fitted well with Langmuir isotherms. Langmuir adsorption capacities (mg/g) were found to be 113, 111, 128, and 123 mg/g for Cd, Cu, Ni and Mn, respectively. In addition, the adsorption kinetics was analyzed using five kinetic models, pseudo-first order, pseudo-second order, intraparticle diffusion and Boyd models. The adsorbent was successfully applied for removal of Cd(II), Cu(II), Mn (II) and Ni(II) ions in wastewater samples.

Activated carbon derived from waste orange and lemon peels for the adsorption of methyl orange and methylene blue dyes from wastewater

“…Kinetic studies were performed by varying the exposure time from 5 to 180 min, while adsorption isotherms were studied at initial dye concentrations of 50–200 mg L ─1 . Tables 1 and 2 shows equations of these models and they are widely reported from literature ( Cheng et al., 2022 ; Gugushe et al., 2021 ; Mashile et al., 2021 ; Mpupa et al., 2020 ).…”

“…When ultrasonic irradiation is applied, the interaction between the solute and the adsorbent is promoted, and mass transfer on the surface of the material is promoted, thus improving the adsorption efficiency ( Çatlıoğlu et al., 2021 ; Mashile et al., 2021 ). In the literature, the effects of ultrasonic irradiation on the adsorption of various contaminants from aqueous solutions have been documented ( Geaneth Pertunia et al., 2020 ; Gugushe et al., 2021 ; Madimetja and Nomngongo, 2019 ; Mpupa et al., 2020 ; Ramutshatsha-Makhwedzha et al., 2019 ).…”

Bio Adsorbent Lemon Peels Charcoal to Remove Fe (III) from Water Sources

“…A modified process was used to create activated carbon [16]. In a nutshell, lemons were bought at a nearby market, properly cleaned with deionized water, and dried separately for 24 hours at 100 °C.…”

Functionalization of a cast NaAl/binary ZnO/SiO2 nanohybrid with amine and Schiff base ligands as an adsorbent of divalent cations in water system

“…Pollutant release into the environment and aqueous systems is a serious global issue. Divalent heavy metal cations such as Cu(II) and Ni(II) ions are the major pollutants that are not biodegradable; and are poisonous and persistent leading to the irreversible health damages (Gugushe et al 2021, Hassan et al 2022). Hence, the effective removal of heavy metal cations from the aqueous environment are required.…”