Magnetic Beads of Zero Valent Iron Doped Polyethersolfun Developed for Removal of Arsenic from Apatite-Soil Treated Water

Roya Noorbakhsh, Mohammad Kazem Koohi (), Jalal Hassan, Anosheh Rahmani, Hamid Rashidi Nodeh and Shahabaldin Rezania ()
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Roya Noorbakhsh: Department of Comparative Bioscience, Faculty of Veterinary Medicine, University of Tehran, Tehran 1419963111, Iran
Mohammad Kazem Koohi: Department of Comparative Bioscience, Faculty of Veterinary Medicine, University of Tehran, Tehran 1419963111, Iran
Jalal Hassan: Department of Comparative Bioscience, Faculty of Veterinary Medicine, University of Tehran, Tehran 1419963111, Iran
Anosheh Rahmani: Food Technology and Agricultural Products Research Center, Standard Research Institute (SRI), Karaj 3174734563, Iran
Hamid Rashidi Nodeh: Food Technology and Agricultural Products Research Center, Standard Research Institute (SRI), Karaj 3174734563, Iran
Shahabaldin Rezania: Department of Environment and Energy, Sejong University, Seoul 05006, Korea

IJERPH, 2022, vol. 19, issue 19, 1-16

Abstract: The drop immerses calcium chloride aqueous solution was utilized to prepare the zero valent iron-doped polyethersulfone beads (PES/ZVI) for the efficient removal of arsenic from apatite-soil treated waters. The proposed beads can assist in promoting uptake efficiency by hindering ZVI agglomeration due to a high porosity and different active sites. The PES/ZVI beads were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and vibrating sample magnetism (VSM). The main objective of this study was to investigate the function of new PES/ZVI beads with an increased removal efficiency for the remediation of arsenic ions from the apatite-soil treated waters. A maximum adsorption removal of 82.39% was achieved when the experiment was performed with 80 mg of adsorbent for a contact time of 180 min. Based on the results, a removal efficiency >90% was obtained after 300 min of shaking time with an arsenic concentration of 20 mg·L −1 . The experimental process was fitted with the Langmuir model due to the high R 2 (0.99) value compared to the Freundlich model (0.91) with an adsorption capacity of 41.32 mg·g −1 . The adsorption process speed was limited by pseudo-second-order (R 2 = 0.999) and the adsorption mechanism nature was endothermic and physical.

Keywords: polyethersulfone beads; zero valent iron; apatite-soil; arsenic; adsorption; kinetic (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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