Stabilization of nano zero-valent iron by electrospun composite mat with good catalysis and recyclability

Xu, Yan; Guo, Qi; Li, Yuan; Qin, Lei; Zhang, Kegang; Liu, Guorui; Yuan, Chun-Gang

doi:10.1016/j.jclepro.2022.132459

Cited by 6 publications

(2 citation statements)

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“…The appearance and disappearance of some IR band for the PES/ZVI confirmed the successful incorporation of ZVI on the surface of the PES beads. In addition to the previous peaks, a stretching vibration at 468 cm −1 corresponded to the metal-oxide group (Fe-O) [14,16]. The thermal stability of PES and PES/ZVI is illustrated in Figure 3.…”

Section: Resultsmentioning

confidence: 86%

“…Although, there are some disadvantages to ZVI adsorbents such as its fast oxidation in aqueous media, due to the small size of ZVI, it can easily be agglomerated via the van der Waals attractive, which leads to bigger particles, decreasing the reactivity [12,13]. To overcome these issues and improve the stability and reusability of ZVI, the incorporation of ZVI into polymer support, such as polyethersulfone (PES), will be helpful [14]. Then, in this study the microbeads based on PES/ZVI were fabricated for the efficient removal of arsenic ions.…”

Section: Introductionmentioning

confidence: 99%

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

Noorbakhsh

Koohi

Hassan

et al. 2022

IJERPH

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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 R2 (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 (R2 = 0.999) and the adsorption mechanism nature was endothermic and physical.

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Section: Resultsmentioning

confidence: 86%