Application of Amine Modified Magnetic Nanoparticles as an Efficient and Reusable Nanofluid for Removal of Ba2+ in High Saline Waters

Abstract

This study describes an investigation on the application of functionalized nanoparticles used as a sorbent for extraction and removal of barium ions from high saline waters. Magnetic recyclable Fe3O4@SiO2 nanoparticles with amine groups were developed and those surface and structural properties were investigated using TEM, FT-IR, XRD, DLS and zeta-potential measurements. Fe3O4@SiO2@NH2 nano adsorbent exhibited good capability to remove Ba2+ from high saline water, resulting from making interaction between Ba2+ and surface amino groups of the prepared magnetic nanopartciles. The performance of the modified nanoparticles is slightly affected due to high concentration of divalent cations (Ca2+). Magnetic nanoparticles are easily recovered from aqueous solution by magnetic separation and regenerated easily by acid treatment. Results of the present study show that recyclable amino functionalized magnetic nanoparticles can be used as a reusable particle to remove barium from produced formation water.