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This study presents the preparation of Magnetic - Multiwall Carbon Nanotubes (M-MWCNTs) as adsorbents, MWCNTs/Fe3O4 nanocomposite, in which multiwall carbon nanotubes were coated to magnetic Fe3O4 particles by simplistic sol-gel techniques. The synthesized MWCNTs/Fe3O4 nano-composites were measured via Fourier Transform Infrared spectroscopy (FTIR), X -Ray Diffraction spectrometry (XRD), and Scanning -electron microscopy (SEM). The adsorption behaviors of the MWCNTs/Fe3O4 nanocomposites will be evaluated intended for the elimination of chromium ions in diluted refinery wastewater.

Magnetic nano particles --- Sol-gel method --- Refining operation --- Heavy metals --- Wastewater.