Adsorption capability of heavy metals by chitosan/poly(ethylene oxide)/activated carbon electrospun nanofibrous membrane

Abstract

In this study, activated carbon (AC) was synthesized by chemical activation process from rice husk, with the BET surface area of 2180 m2/g. Chitosan/poly(ethylene oxide) (PEO)/AC nanofibrous membrane (CPANM) was synthesized by electrospinning process. The average fiber diameter was found to be 83 ± 12.5 nm. Incorporation of AC lead to increase in the surface area of CPANM than chitosan/PEO fiber (CPF) by 371 m2/g. X‐ray photoelectron spectroscopy survey and narrow scan analysis further proved the presence of AC in the membrane. CPANM showed higher adsorption capability than CPF. Analysis of the mechanism of heavy metals adsorption by CPANM and CPF hypothesized that, (NH2) is the only active group in CPF, whereas both (NH2) and (COOH) contributed in adsorption for CPANM. Maximum adsorption capacity of CPANM for Cr(VI), Fe(III), Cu(II), Zn(II), and Pb(II) ion was found to be 261.1, 217.4, 195.3, 186.2, and 176.9 mg g−1 respectively. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45851.

Influence of the processing parameters on needleless electrospinning from double ring slits spinneret using response surface methodology

“…The reason was that higher solution concentration has more macromolecule chain entanglement, at the same time, there was a higher viscosity force for higher solution concentration. The final result is to increase the nanofiber mean diameter . For applied voltage, there is a very minimal impact on the nanofiber mean diameter.…”

“…The final result is to increase the nanofiber mean diameter. 3,4 For applied voltage, there is a very minimal impact on the nanofiber mean diameter. Although higher applied voltage increased electric force, more solution also could be pulled out due to the effect viscous resistance, some interaction between electric force and viscous resistance would result in slight variations in nanofiber mean diameter.…”

“…Electrospun nanofibers have many superior characteristics, such as high specific surface area, high porosity, fine fiber diameter, and so on. Therefore, electrospun nanofibers have been reported in filtration and adsorption, tissue engineering scaffold, wound dressing, energy storage, and composite reinforcement …”

A POSS‐Phosphazene Based Porous Material for Adsorption of Metal Ions from Water

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Systematic Investigation on the Adsorption Performance and Mechanism of MnO2/TA Nanoflowers for Cu(II) Removal from Aqueous Solution

“…However, in some developing countries, the combination of rapid industrialization and the lack of control of heavy metal release created a very critical environmental problem. It has been reported that currently more than 1 billion people around the world live with a shortage of safe water and that every 15 s a child dies from a waterborne disease . Therefore, there is an urgent need to find an effective way to remove pollutants from water so that vulnerable individuals can secure the most essential resource for survival.…”