Magnetic polystyrene–palygorskite nanocomposite obtained by heterogeneous phase polymerization to apply in the treatment of oily waters

Abstract

Water contaminated by oil poses challenges to the management of water resources. Magnetic nanoparticles has been issue of different potential applications including remotion oil from water. Magnetic polystyrene-palygorskite nanocomposites were prepared by a heterogeneous phase polymerization for the removal of organic contaminants from water. The organo-Fe 3 O 4 -palygorskite nanoparticles were coated with polystyrene, forming water repellent and oil absorbing surfaces to promote the removal of oil from the surfaces of nanocomposites by applying an external magnetic field. X-ray fluorescence, X-ray diffraction, scanning electron microscopy, zeta potential and size distribution measurement, surface area determination by BET, density measurement by He pycnometry, carbon grade determination, thermogravimetric analysis, Fourier-transform infrared spectroscopy, Raman spectroscopy, and evaluation of hydrophobicity by contact angle were used to characterize the nanoparticles. The magnetic nanocomposite obtained showed excellent hydrophobicity, around 788 contact angle. In addition, oil removal capability tests were also performed, according to which the preliminary results indicated removal of approximately 98% of oil in synthetic oily water samples. The oil-water separation using this magnetic nanocomposite provides a promising alternative strategy for water treatment.

Effective treatment of emulsified oil wastewater by the coagulation–flotation process

“…When the PAFC dosage was 300 mg L À1 , the PAM dosage was 30 mg L À1 , the stirring speed was 350 rpm, and the stirring time was 5 min, the demulsication and degreasing effects of emulsied oil wastewater with oil content of 5000 ppm were the best. 22 3.2 Flocculation process 3.2.1 The effect of PAM dosage on the oil removal performance. Fig.…”

Glycerin‐Based Polyurethane Obtained by Inverse Emulsion: Comparison Between Magnetic Induction and Conventional Heating

“…The maghemite was prepared by homogeneous co‐precipitation, following the described procedure as published elsewhere . In a typical procedure, 25 mL of the aqueous solutions of FeCl 3 .6H 2 O (0.25 M) and FeSO 4 .7H 2 O (0.25 M) were mixed, under mechanical stirring at 600 rpm, at 30 °C.…”

“…The maghemite was prepared by homogeneous co-precipitation, following the described procedure as published elsewhere. [3,4,[28][29][30][31][32][33][34][35][36][37][38][39][40][41] In a typical procedure, 25 mL of the aqueous solutions of FeCl 3 .6H 2 O (0.25 M) and FeSO 4 .7H 2 O (0.25 M) were mixed, under mechanical stirring at 600 rpm, at 30 C. Then, after 10 min, 20 mL of aqueous KOH solution (2 M) was added, inducing the formation of a black precipitate (magnetite). The resulting solution was kept under mechanical stirring for 30 min.…”

Hyperthermia System Based on Extrinsically Magnetic Poly (Butylene Succinate)

“…Magnetic nanoparticles were prepared as reported elsewhere. [3,[26][27][28][29][30][31][32][33][34][35][36][37][38][39] Ferric chloride hexahydrate (6.75 g) and ferrous sulfate heptahydrate (6.95 g) were dissolved in 30 mL of deionized water. An aqueous 0.112 g mL À1 solution of potassium hydroxide was added to this solution and then mechanically stirred for 30 min.…”

“…The obtained result was equal to 13 nm. Therefore, the produced material, as proved elsewhere, [3,27,[29][30][31][33][34][35][36][37][38][39][49][50][51][52][53][54][55] can be classified as a nanocomposite.…”