Abstract
In this study, zinc ferrite magnetic nanoparticles (ZnFe2O4, ZFO MNPs) were employed as a sorbent for the removal of oil spill from water surfaces. ZFO MNPs were synthesized via a sol-gel process and characterized by Fourier transform infrared spectroscopy (FTIR) and X-ray powder diffraction (XRD). Both the apparent density and magnetic force were determined. ZFO MNPs presented a considerable magnetic force (40.22 mN) and an adequate density (0.5287 g/cm3), which are important for the magnetic separation and flotation. Four oil samples (gasoline engine oil, crude oil, used motor oil and diesel engine oil) were used to investigate the gravimetric oil removal capability of ZFO MNPs. The oil sorption capacities were found to be 23.00-6.13, 27.65-7.42, 22.62-7.01 and 30.54-9.93 g/g for crude, diesel engine, gasoline engine, and used motor oil, respectively. The current findings demonstrate that ZFO MNPs exhibit good properties (e.g., magnetic and density) and can be used as a sorbent for oil spill cleaning-up from water surfaces.
Highlights
Oil has become an essential element to our modern industrial society and our daily life
Small amounts of impurities were observed in the X-ray powder diffraction (XRD) pattern, which were identified as α-Fe2O3 and ZnO [37, 38]
As shown in the table, the gravimetric oil removal capacity of ZFO magnetic nanoparticles (MNPs) is comparable to those of other oil sorbents. These results demonstrate that the prepared material (ZFO MNPs) can be used as an oil sorbent for oil spillage cleanup from water surfaces
Summary
Oil has become an essential element to our modern industrial society and our daily life. The structural parameter values of ZFO MNPs, including lattice parameters (a), unit cell volume ( ), X-ray density ( ), crystal size (D), and specific surface area ( ), were estimated using XRD data of the high-intensity peak (311). Figure-5 displays the GOR (g/g) values of the sorbate (tested oils) as a function of the amount of ZFO MNPs (sorbent).
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