Cross-linked chitosan coated biodegradable porous electrospun membranes for the removal of synthetic dyes

Chitosan crosslinked with 3-aminopropyltriethoxysilane was coated on porous poly (L-lactic acid) nanofibrous membrane to remove dyes from wastewater in the present study. The adsorption capacity of the composite membrane for the removal of methylene blue and rhodamine B was comprehensively studied....

Full description

Saved in:
Bibliographic Details
Published in:Reactive & functional polymers 2021-09, Vol.166, p.104995, Article 104995
Main Authors: Zia, Qasim, Tabassum, Madeeha, Umar, Muhammad, Nawaz, Hifza, Gong, Hugh, Li, Jiashen
Format: Article
Language:English
Subjects:
3-aminopropyltriethoxysilane
Adsorbents
Adsorption
Aminopropyltriethoxysilane
Biodegradability
Chitosan
Crosslinking
Crosslinking polymerization
Dyes
Electrospinning
Fourier transforms
Infrared analysis
Infrared spectrophotometers
Lactic acid
Membranes
Methylene blue
Methylene blue and rhodamine B
Porous poly (l-lactic acid)
Rhodamine
Studies
Wastewater treatment
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Chitosan crosslinked with 3-aminopropyltriethoxysilane was coated on porous poly (L-lactic acid) nanofibrous membrane to remove dyes from wastewater in the present study. The adsorption capacity of the composite membrane for the removal of methylene blue and rhodamine B was comprehensively studied. Large porous framework provided a high surface area to effectively immobilize the cross-linked chitosan on nanofibrous membranes. Batch trials were performed to evaluate the adsorption behaviour of membranes with variable crosslinking ratio, pH, initial concentration, temperature and time. Moreover, the adsorbent membranes before and after adsorption were characterized using scanning electron microscopy, x-ray energy dispersive analysis, and Fourier transform infrared spectrophotometer. Under optimum parameters, the adsorbent showed the removal capacity of 86.43 and 82.37 mg/g for rhodamine B and methylene blue, respectively. Isothermal and kinetic experiments showed that Langmuir isotherm and pseudo second order kinetics correlated best with adsorption data. Finally, the mechanism of adsorption and reusability of membrane for five cycles was studied. [Display omitted] •Successful crosslinking of chitosan with 3-aminopropyltriethoxysilane.•Immobilization of crosslinked chitosan on porous poly (l-lactic acid) nanofibers.•Study of adsorption isotherms and kinetics.•Faster and higher adsorption of methylene blue and rhodamine B dyes.•Reusability of adsorbent membranes.
ISSN:1381-5148
1873-166X
DOI:10.1016/j.reactfunctpolym.2021.104995