Nano zinc ferrite/polyurethane foam composite materials for Cd2+ and Cu2+ ions removal from aqueous solution

: Zinc ferrite Polyurethane foam composite materials were formed by adding 0.33wt% ZnFe 2 O 4 nanoparticles into polyurethane foam (PUF) during the preparation process. ZnFe 2 O 4 /PUF composite materials have successfully been utilized as a new solid phase extraction (SPE) sorbent for the separation of cadmium and copper ions in various water samples. The XRD results revealed that only the spinel structure of ZnFe 2 O 4 was formed, with an average crystallite size of 24nm. The ferromagnetic behaviour of ZnFe 2 O 4 nanoparticles was observed, with magnetization of 4.179emu/g and coercivity of 267.11G. The microstructure of the prepared composite materials observed the spongy structure and higher porosity. The aqueous solution and real water (from Fayoum city, Egypt) were used for studying the effects of pH, sorbent dose, and shaking time of the composite materials on the Cd 2+ and Cu 2+ ions removal. The batch procedure shows the maximum extraction percentage of Cd 2+ and Cu 2+ ions were 95.8% and 96.5% at the optimal conditions.