Preparation of phosphorylated polyacrylonitrile-based nanofiber mat and its application for heavy metal ion removal

Zhao, Rui; Li, Xiang; Sun, Bolun; Shen, Mengqi; Tan, Xiaochen; Ding, Yi; Jiang, Ziqiao; Wang, Ce

doi:10.1016/j.cej.2015.01.061

Cited by 156 publications

(59 citation statements)

References 38 publications

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“…In addition, the C-O stretching at approximately 1100 cm 21 in PVA/CS was replaced by a broader absorption band 1025-1061 cm 21 , which could be attributed to the ether (C-O) and the acetal ring (C-O-C) bands formed by the cross-linking reaction of blend nanofiber with glutaraldehyde. In addition, imine bands (-C5N-, 1655 cm 21 ) were formed by the crosslinking reaction of amines with glutaraldehyde [26,27]. It could be seen that the perfect uniform nanofibers with small diameters and without any drops and beads were obtained.…”

Section: Bandmentioning

confidence: 99%

Dye removal from wastewater by the cross‐linked blend nanofiber and homogenous surface diffusion modeling

Mahmoodi

Mokhtari-Shourijeh

Ghane-Karade

2017

Env Prog and Sustain Energy

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In this paper, the blend nanofiber (poly(vinyl alcohol) (PVA)/chitosan (CS)/diethylenetriamine (DETA)/ethylenediamine (EDA): PVA/CS/DETA/EDA) was prepared by electrospinning and cross‐linked by glutaraldehyde. The cross‐linked blend nanofiber by glutaraldehyde (CBNG) was characterized by FTIR and SEM. The homogenous surface diffusion model (HSDM) was used for expressing the dye adsorption on CBNG from colored wastewater. Experimental data were used to calculate the isotherm parameters as well as the kinetic parameters describing mass transfer resistances due to film diffusion (kf) and diffusion coefficient (Ds). The sum square error (SSE) values for the adsorption of Acid Red 18 (AR18), Direct Blue 78 (DB78), and Direct Red 23 (DR23) were 0.0221, 0.0632, and 0.0038, respectively. Thus, the experimental and theoretical data showed a good agreement. Dye removal by CBNG followed the Langmuir isotherm and pseudo‐second order kinetics models. Thermodynamic studies indicated dye adsorption onto the nanofiber was an endothermic, spontaneous, and physisorption process. © 2017 American Institute of Chemical Engineers Environ Prog, 36: 1634–1642, 2017

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Section: Bandmentioning

confidence: 99%

Dye removal from wastewater by the cross‐linked blend nanofiber and homogenous surface diffusion modeling

Mahmoodi

Mokhtari-Shourijeh

Ghane-Karade

2017

Env Prog and Sustain Energy

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“…Xiong et al [14] reported that the 2-amino-1,3,4-thiadiazole functionalized PANF containing N and S atoms can be used for the selective adsorption of Hg(II) from mixed metal solutions. Zhao et al [15] found that phosphorylate PAN nanofiber mat exhibit high adsorption performance towards Pb 2+ , Cu 2+ , Ag + and Cd 2+ ions. According to the principle of hard and soft acids and bases, sulfur-containing groups are regarded as soft bases and therefore it is reasonable to use sulfur functionalized PANF to interact with such soft acids like Cd(II) and Pb(II) through a coordinate bond in the side chain of the polymer.…”

Section: Introductionmentioning

confidence: 99%

Polyacrylonitrile-based fiber modified with thiosemicarbazide by microwave irradiation and its adsorption behavior for Cd(II) and Pb(II)

Deng

Wang

Zhang

et al. 2016

Journal of Hazardous Materials

127

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A novel thiosemicarbazide modified adsorbent (PAN(MW)-TSC) based on polyacrylonitrile fiber was successfully synthesized under microwave irradiation, which was applied for the uptake of Cd(II) and Pb(II) from aqueous solution subsequently. Microwave irradiation method is a new approach to achieve the modification and it turns out that just a 30min process is enough for the anchoring of functional groups in the fiber matrix. The surface characterization was performed by fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM) elemental analysis (EA) and thermogravimetric analysis (TGA), indicating that the modification was successfully accomplished. Batch adsorption experiments including equilibrium isotherms, kinetics and the effects of pH and temperature on the adsorption of Cd(II) and Pb(II) were systematically studied. Among three kinetic models, the pseudo-second-order kinetic model provides the best correlation for the process. The nonlinear resolution of the Langmuir isotherm equation has been found to show the closest fit to the equilibrium date. Thermodynamic parameters, involving △G, △H and △S were also calculated from graphical interpretation of the experimental data, which suggest that metal ions adsorption onto PAN(MW)-TSC fibers is spontaneous and exothermic. Regeneration of PAN(MW)-TSC fibers loaded with metal ions was efficiently done with 0.5M HNO3, by which the investigated adsorbent could be used reproductively for five times with a small decrease in sorption capacity. The feasible preparation of PAN(MW)-TSC fibers with high adsorption capacities opens a new perspective in the potential application for wastewater treatment.

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“…Electrospinning is a simple and versatile method to generate nanofibers [16] . The obtained nanofibers have potential advantages to remove pollutants from wastewater due to their specific characteristics including high surface area and porosity, which can provide more adsorption sites [16][17][18][19][20][21][22] . In addition the properties of nanofibers can be modified by chemical and physical reactions to improve their adsorption capacity [15][16][17] .…”

Section: Introductionmentioning

confidence: 99%

Preparation of aminated nanoporous nanofiber by solvent casting/porogen leaching technique and dye adsorption modeling

Mahmoodi

Mokhtari-Shourijeh

2016

Journal of the Taiwan Institute of Chemical Engineers

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Preparation of phosphorylated polyacrylonitrile-based nanofiber mat and its application for heavy metal ion removal

Cited by 156 publications

References 38 publications

Dye removal from wastewater by the cross‐linked blend nanofiber and homogenous surface diffusion modeling

Dye removal from wastewater by the cross‐linked blend nanofiber and homogenous surface diffusion modeling

Polyacrylonitrile-based fiber modified with thiosemicarbazide by microwave irradiation and its adsorption behavior for Cd(II) and Pb(II)

Preparation of aminated nanoporous nanofiber by solvent casting/porogen leaching technique and dye adsorption modeling

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