The Efficient Removal of Methylene Blue from Water Samples Using Three-dimensional Poly (vinyl Alcohol)/starch Nanofiber Membrane As a Green Nanosorbent
Overview
Toxicology
Affiliations
In the present study, a simple, fast, and economical method was introduced to eliminate methylene blue from dye wastewater water using a non-toxic, inexpensive, stable, and efficient adsorbent. The poly (vinyl alcohol) (PVA)/starch hydrogel nanofiber membrane with high surface area and the three-dimensional structure was fabricated in water via electrospinning strategy, and the cross-linking reaction was done by thermal treatment. The characterization of the nanofibers was carried out using Fourier-transform infrared spectrometer (FT-IR) and field-emission scanning electron microscopy (FE-SEM), and the cross-linked PVA/starch nanofiber was applied as a membrane for the removal of methylene blue (MB). The recovery of MB was performed by methanol solution containing 5% (v/v) HCl. Langmuir isotherm model successfully described the adsorption of MB on nanosorbent, and the maximum adsorption capacity (q) was 400 mg g. Also, the kinetic of adsorption was well fitted by the pseudo-second-order model. In this study, because of the high stability of fabricated membrane (based on the tensile testing), it can be used as a filter for the fast separation of MB (cationic dye) and methyl orange (MO, anionic dye). Graphical abstract.
Li M, Zhang P, Wang Q, Yu N, Zhang X, Su S Polymers (Basel). 2023; 15(9).
PMID: 37177263 PMC: 10180889. DOI: 10.3390/polym15092110.
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Nayl A, Abd-Elhamid A, Awwad N, Abdelgawad M, Wu J, Mo X Polymers (Basel). 2022; 14(8).
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Kotobuki M, Gu Q, Zhang L, Wang J Molecules. 2021; 26(11).
PMID: 34206052 PMC: 8198361. DOI: 10.3390/molecules26113331.
Thamer B, Aldalbahi A, Moydeen A M, Rahaman M, El-Newehy M Polymers (Basel). 2020; 13(1).
PMID: 33374681 PMC: 7793529. DOI: 10.3390/polym13010020.