Adsorption of Pharmaceutical Contaminants from Aqueous Solutions Using N,O-Carboxymethyl Chitosan/Polyethylene Oxide (PEO) Electrospun Nanofibers

Nanofibrous material of n-succinyl chitosan/ polyethylene oxide in the removal of emerging pharmaceuticals from aqueous solution by adsorption/desorption method

“…Electrospun NSCS/PEO nanofibers with the smallest diameters were around (183 ± 38 nm). Even though the fibre diameters were high in comparison to the diameter of pure CS/PEO ratio 4:1 (140 ± 53 nm) as reported in our previous work (Khierallah et al 2021), the solvent evaporation rate during electrospinning was slow. A 50% acetic acid solution, which is easier to evaporate than water, was tried as a solvent, but the efforts were not successful in controlling other defects such as the droplet production, unstable jet, formation of particles-nanofiber, and very large diameter nanofibers.…”

Fabrication of biodegradable fibrous systems employing electrospinning technology for effluent treatment

“…The adsorption obeyed the Freundlich and pseudo-second-order models and illustrated an equilibrium adsorption capacity of 141.21 under the optimum pH of 4–5. 138 The electrospun nanofibers fabricated using PEO/carboxymethyl chitosan was used to eliminate fluoxetine, 139 which revealed the probable chemisorption mechanism with electrostatic bonding for the nanofiber. The fabricated protein/PVA nanofibers via electrospinning from a blend of PVA and protein extracted from Moringa stenopetala seeds with a diameter of 232.87 ± 59.35 nm under optimum parameters including voltage of 5 kV, flow rate of 5 μL min −1 and spinning distance of 12.5 cm exhibited thermal stability up to 170 °C, making them a favorable candidate for effluent removal.…”