Magnetic nanocomposite of zinc–manganese ferrite/polyurethane foam for adsorption of copper and cadmium from water

The magnetic nanoparticles, zinc–manganese ferrite (Zn0.6Mn0.4Fe2O4), were chemically added to polyurethane foam (PUF) to obtain the polymeric nanocomposite Zn0.6Mn0.4Fe2O4/PUF. Characterization of the nanoparticles and the nanocomposite was made by X-ray diffraction, scanning electron microscopy, h...

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Bibliographic Details
Published in:	Desalination and water treatment Vol. 267; pp. 26 - 44
Main Authors:	Abdel Azeem, Sami M., Wahsh, Mohamed M.S., Youssef, Fatma H., Ibrahim, Ahmed M.H., Burham, Nagwa
Format:	Journal Article
Language:	English
Published:	Elsevier Inc 01-08-2022
Subjects:	Copper and cadmium Lake, river and tap waters Nanocomposite sorbent Polyurethane foam Zinc–manganese ferrite nanoparticles Nanocomposite sorbent Zinc–manganese ferrite nanoparticles Lake, river and tap waters Copper and cadmium Polyurethane foam
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Summary:	The magnetic nanoparticles, zinc–manganese ferrite (Zn0.6Mn0.4Fe2O4), were chemically added to polyurethane foam (PUF) to obtain the polymeric nanocomposite Zn0.6Mn0.4Fe2O4/PUF. Characterization of the nanoparticles and the nanocomposite was made by X-ray diffraction, scanning electron microscopy, high-resolution transmission electron microscopy, and vibrating sample magnetometer. The prepared nanocomposite showed adsorption efficiency of 95% and 94% for Cu and Cd, respectively at a pH of 6.5, a shaking time of 60 min, and a composite dosage of 0.2 g. Adsorption kinetics followed a second-order model, with k2 = 3.02 and 4.05 mg g–1 min–1 and adsorption capacity was 20.4 and 11.1 mg g–1, respectively. The Freundlich model best described the adsorption isotherm, n = 0.93 and 0.88 and KF = 0.64 and 0.31 L g–1, and R2 = 0.988 and 0.980, respectively. The quantification limits are 0.9 and 1.4 μg L–1, respectively, with a pre-concentration factor of 125. The removal of Cd and Cu from tap, lake and river waters, yielding a recovery from 89%–116% relative standard deviation (RSD = 0.8%–8.6%).
ISSN:	1944-3986 1944-3986
DOI:	10.5004/dwt.2022.28643