Cadmium and Lead Removal from Aqueous Solution Using Magnetite Nanoparticles Biofabricated from Portulaca oleracea Leaf Extract

Magnetic nanoparticles of iron oxide (Fe3O4 NPs) were prepared using a biosynthetic method to investigate their potential use as an adsorbent for adsorption Pb(II) and Cd(II) from the aqueous solution. The present study first time used magnetite leaf extract Portulaca oleracea removal metal ions. Characterizations Fe3O4 NPs (PO-Fe3O4MNPs) achieved by X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), energy-dispersive spectroscopy (EDX), transmittance microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy. batch process has been performed effect various parameters, such contact time, pH, temperature, initial concentration, dose. optimum pH was 6. heavy metals found increase with dosage reduced increasing concentration. Langmuir, Freundlich, Khan, Toth isotherms isotherm models. data fitted well Freundlich model correlation coefficient ( R 2 > 0.94 ). maximum capacities id="M2"> Q max ) at equilibrium 177.48 mg/g 108.2267 Pb(II), respectively. kinetic analysis showed that overall successfully pseudo-second-order model. calculated thermodynamic parameters id="M3"> ? G ° , id="M4"> H id="M5"> S ions onto PO-Fe3O4MNPs exothermic spontaneous. These results demonstrate biogenic synthesized are highly efficient adsorbents contaminated water.