Application of modified electrospun nanofiber membranes with α-Fe2O3 nanoparticles in arsenate removal from aqueous media

Bahmani, Pegah; Maleki, Afshin; Daraei, Hiua; Rezaee, Reza; Khamforoush, Mehrdad; Athar, Saeed Dehestani; Gharibi, Fardin; Ziaee, Amir Hossein; McKay, Gordon

doi:10.1007/s11356-019-05228-5

Cited by 25 publications

(15 citation statements)

References 85 publications

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“…The negative surface charge increased with the addition of GO and ZnO, which results in a high arsenate rejection rate and the membranes have a negative surface charge within the studied pH range, which is required for arsenate rejection. GP-2 and ZP-2 rejected 60 and 71% of arsenate, which is higher than the only reported result on electrospun membranes for arsenate removal by Bahmani et al [ 82 ], where GP-1 and ZP-1 demonstrated only 13 and 17% of arsenate rejection. This could be because of the porosity % and hydrophobic nature.…”

Section: Resultscontrasting

confidence: 57%

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Electrospun Composite Nanofiltration Membranes for Arsenic Removal

et al. 2022

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In recent years, significant attention has been paid towards the study and application of mixed matrix nanofibrous membranes for water treatment. The focus of this study is to develop and characterize functional polysulfone (PSf)-based composite nanofiltration (NF) membranes comprising two different oxides, such as graphene oxide (GO) and zinc oxide (ZnO) for arsenic removal from water. PSf/GO- and PSf/ZnO-mixed matrix NF membranes were fabricated using the electrospinning technique, and subsequently examined for their physicochemical properties and evaluated for their performance for arsenite–As(III) and arsenate–As(V) rejection. The effect of GO and ZnO on the morphology, hierarchical structure, and hydrophilicity of fabricated membranes was studied using a scanning electron microscope (SEM), small and ultra-small angle neutron scattering (USANS and SANS), contact angle, zeta potential, and BET (Brunauer, Emmett and Teller) surface area analysis. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) were used to study the elemental compositions and polymer-oxide interaction in the membranes. The incorporation of GO and ZnO in PSf matrix reduced the fiber diameter but increased the porosity, hydrophilicity, and surface negative charge of the membranes. Among five membrane systems, PSf with 1% ZnO has the highest water permeability of 13, 13 and 11 L h−1 m−2 bar−1 for pure water, As(III), and As(V)-contaminated water, respectively. The composite NF membranes of PSf and ZnO exhibited enhanced (more than twice) arsenite removal (at 5 bar pressure) of 71% as compared to pristine PSf membranes, at 43%, whereas both membranes showed only a 27% removal for arsenate.

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Section: Resultscontrasting

confidence: 57%

“…In the case of ZP-1 and 2, ZP-2 has higher water permeability, as ZP-2 has nearly 26% more porosity than ZP-1. Higher permeability is favorable for a higher arsenic rejection rate [ 82 ].…”

Section: Resultsmentioning

confidence: 99%

Electrospun Composite Nanofiltration Membranes for Arsenic Removal

et al. 2022

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“…Pervaporation experiments (PV) were carried out using the apparatus described in a previous paper [27] under the same conditions. A single measurement takes ten hours.…”

Section: Pervaporation Experimentsmentioning

confidence: 99%

“…All proposed fillers have already been investigated in various fields, also in different aspects of membrane processes, e.g., hematite was applied for a removal of natural organic matter [ 23 ], as membrane filler in solid oxide fuel cells [ 24 ], as a catalyst in reactive membranes [ 25 ], ultrafiltration [ 26 ] and removal of heavy metals [ 27 ]. Magnetite was applied as membrane filler for pervaporation and membrane distillation [ 28 ], microfiltration [ 29 ], and a removal of heavy metals [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

Collation Efficiency of Poly(Vinyl Alcohol) and Alginate Membranes with Iron-Based Magnetic Organic/Inorganic Fillers in Pervaporative Dehydration of Ethanol

2020

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Hybrid poly(vinyl alcohol) and alginate membranes were investigated in the process of ethanol dehydration by pervaporation. As a filler, three types of particles containing iron element, i.e., hematite, magnetite, and iron(III) acetyloacetonate were used. The parameters describing transport properties and effectiveness of investigated membranes were evaluated. Additionally, the physico-chemical properties of the resulting membranes were studied. The influence of polymer matrix, choice of iron particles and their content in terms of effectiveness of membranes in the process of ethanol dehydration were considered. The results showed that hybrid alginate membranes were characterized by a better separation factor, while poly(vinyl alcohol) membranes by a better flux. The best parameters were obtained for membranes filled with 7 wt% of iron(III) acetyloacetonate. The separation factor and pervaporative separation index were equal to 19.69 and 15,998 g⋅m−2⋅h−1 for alginate membrane and 11.75 and 14,878 g⋅m−2⋅h−1 for poly(vinyl alcohol) membrane, respectively.

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“…Iron oxide is a compound material, largely found as hematite (α-Fe2O3), magnetite (Fe3O4), wüstite (Fe1 − xO), and maghemite (γ-Fe2O3) (Cornell and Schwertmann 2003), which has attracted attention as an adsorbent due to its ability to remove various types of heavy-metal ions (Bahmani et al 2019;Fayazi et al 2019;Sruthi et al 2018;Khan et al 2020). Recent studies have demonstrated that α-Fe2O3 has a high adsorption capability, which occurs through a chemisorption process involving the hydroxyl group on its surface (Singaraj et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Formation of Dense and High-Aspect-Ratio Iron Oxide Nanowires by Water-Vapor-Assisted Thermal Oxidation and their Cr(VI) Adsorption Properties

Budiman

Tan

Kawamura

et al. 2021

Preprint

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In this work, highly crystalline and high aspect ratio α-Fe2O3 nanowire (NWs) were successfully produced by thermal oxidation of iron in water vapor at 800°C. The process was done for 2 h and the NWs were found to be covering the foil uniformly unlike when the oxidation environment was dry whereby the NWs formed were shorted and rather dispersed. The formation of NWs was proposed to be due to a stress-driven surface diffusion during thermal oxidation process. When oxidation was done at 700 oC, we observed coral-like nanostructures. The α-Fe2O3 NWs were then used as adsorbent to remove Cr(VI) from stimulated wastewater. Removal efficiency of 97% in a 225 mg/L Cr(VI) solution was observed indicating very fast removal of Cr(VI) in the presence of the NWs. The kinetic characteristic of the adsorption was fitted to a pseudo-second-order kinetic model, and isothermal studies indicated that the α-Fe2O3 NWs exhibited an adsorption capacity of 66.26 mg/g.

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Application of modified electrospun nanofiber membranes with α-Fe2O3 nanoparticles in arsenate removal from aqueous media

Cited by 25 publications

References 85 publications

Electrospun Composite Nanofiltration Membranes for Arsenic Removal

Electrospun Composite Nanofiltration Membranes for Arsenic Removal

Collation Efficiency of Poly(Vinyl Alcohol) and Alginate Membranes with Iron-Based Magnetic Organic/Inorganic Fillers in Pervaporative Dehydration of Ethanol

Formation of Dense and High-Aspect-Ratio Iron Oxide Nanowires by Water-Vapor-Assisted Thermal Oxidation and their Cr(VI) Adsorption Properties

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