TY - JOUR
T1 - Chitosan-functionalized sodium alginate-based electrospun nanofiber membrane for As (III) removal from aqueous solution
AU - Talukder, Md. Eman
AU - Pervez, Md. Nahid
AU - Jianming, Wang
AU - Gao, Ziwei
AU - Stylios, George K.
AU - Hassan, Mohammad Mahbubul
AU - Song, Hongchen
AU - Naddeod, Vincenzo
N1 - Funding Information:
This work was supported by the Shenzhen Institute of Advanced Technology, the Chinese Academy of Sciences, Shenzhen, China. The authors are also grateful to the Shenzhen Institute of Advanced Technology, the Chinese Academy of Sciences, Shenzhen, China. This research work was funded by Shenzhen Science and Technology program (grant number: KCXFZ 2021221173402006 ). In addition, we would like to express our sincere gratitude for the support from the Sanitary Environmental Engineering Division (SEED) and grants (FARB projects) from the University of Salerno, Italy, coordinated by prof. V. Naddeo. The PhD School in “Risk and Sustainability in Civil Engineering, Environmental and Construction” is also acknowledged for the scholarships (cycle-XXXIV) of M.N. Pervez.
Publisher Copyright:
© 2021 Elsevier Ltd
PY - 2021/12
Y1 - 2021/12
N2 - Environment-friendly chitosan-modified-poly(vinyl alcohol) or (PVA)/sodium alginate (SA) electrospun nanofiber membrane (ENM) adsorbent was prepared for the removal of As(III) from an aqueous solution. The chitosan(CS)-functionalized-PVA/SA ENM (CS-f-PVA/SA) was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and X-Ray diffraction (XRD). The CS-f-PVA/SA ENM showed the maximum As (III) adsorption capacity at neutral pH (540.40 mg g-1). The adsorption experiments were conducted by varying the initial pH of the arsenic solutions and also in the presence of different coexisting anions, such Cl- and F-, SO42−, and PO43−. Moreover, the kinetic studies were performed to depict the rate of As(III) sorption onto CS-f-PVA/SA ENM. The As(III) adsorption reached equilibrium within 90 min, which well fitted to the pseudo-second-order kinetic model. The initial pH of arsenic solutions greatly affected the adsorption efficiency but the presence of competing anions in arsenic solutions showed a moderate effect on the arsenic adsorption. The FTIR and XRD analyses suggest that–NH2, –OH, and C–O functional groups of CS-f-PVA/SA ENM are responsible for As(III) uptake. The prepared CS-f-PVA/SA ENM can be easily regenerated using 0.003 M NaOH, and the As(III) removal rate was still above 90% to 50% after ten successive adsorption-desorption cycles. Thus, such a nanofiber-based adsorbent is quite promising for the removal of As(III) from potable water and can be beneficial in combating the current challenges of arsenic pollution.
AB - Environment-friendly chitosan-modified-poly(vinyl alcohol) or (PVA)/sodium alginate (SA) electrospun nanofiber membrane (ENM) adsorbent was prepared for the removal of As(III) from an aqueous solution. The chitosan(CS)-functionalized-PVA/SA ENM (CS-f-PVA/SA) was characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and X-Ray diffraction (XRD). The CS-f-PVA/SA ENM showed the maximum As (III) adsorption capacity at neutral pH (540.40 mg g-1). The adsorption experiments were conducted by varying the initial pH of the arsenic solutions and also in the presence of different coexisting anions, such Cl- and F-, SO42−, and PO43−. Moreover, the kinetic studies were performed to depict the rate of As(III) sorption onto CS-f-PVA/SA ENM. The As(III) adsorption reached equilibrium within 90 min, which well fitted to the pseudo-second-order kinetic model. The initial pH of arsenic solutions greatly affected the adsorption efficiency but the presence of competing anions in arsenic solutions showed a moderate effect on the arsenic adsorption. The FTIR and XRD analyses suggest that–NH2, –OH, and C–O functional groups of CS-f-PVA/SA ENM are responsible for As(III) uptake. The prepared CS-f-PVA/SA ENM can be easily regenerated using 0.003 M NaOH, and the As(III) removal rate was still above 90% to 50% after ten successive adsorption-desorption cycles. Thus, such a nanofiber-based adsorbent is quite promising for the removal of As(III) from potable water and can be beneficial in combating the current challenges of arsenic pollution.
KW - Arsenic
KW - Electrospinning
KW - Nanoadsorbents
KW - Nanofiber membranes
KW - Surfaced modification
UR - http://www.scopus.com/inward/record.url?scp=85118566722&partnerID=8YFLogxK
U2 - 10.1016/j.jece.2021.106693
DO - 10.1016/j.jece.2021.106693
M3 - Article
SN - 2213-3437
VL - 9
JO - Journal of Environmental Chemical Engineering
JF - Journal of Environmental Chemical Engineering
IS - 6
M1 - 106693
ER -