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29.04.2024

Formulation and characterization of lignin modified chitosan beads

verfasst von: Taiba Bashir, Joydeep Dutta, Shaista Masarat, George Z. Kyzas

Erschienen in: Adsorption

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Abstract

A simple manual flow injection method was used to formulate chitosan-lignin composite beads in a ratio of 1:1. The beads were then characterized using FT-IR (Fourier Transform Infrared Spectroscopy), SEM (Scanning Electron Microscopy), TGA (Thermogravimetric Analysis), and XRD (X-ray Diffraction). The FT-IR results indicate the chemical composition, revealing the presence of C-O, NH, C-H, and OH on chitosan, as well as OH, C-O-C, C = C, -O-CH3, and C-H, showing the presence and dispersion of lignin within chitosan molecules. SEM was useful for looking at the surface shape and showed structural differences between pure chitosan (which had a smooth surface with few holes) and composite beads (which had sharp edges and a rough, wrinkled shape). The TGA sheds light on the thermal stability and degradation properties of the beads. The thermograms show a similar pattern; however, the degradation temperature improved with the addition of lignin. An XRD investigation revealed the crystalline nature of the beads. Chitosan beads showed a sharp peak at 2θ = 21.8°, whereas in composites, the first peak was observed at 2θ = 9.9° second at 2θ = 20.130° and the third at 2θ = 28°. These findings allowed for the possibility that chitosan/lignin composite beads may be a good adsorbent for use in wastewater treatment systems.

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Metadaten
Titel
Formulation and characterization of lignin modified chitosan beads
verfasst von
Taiba Bashir
Joydeep Dutta
Shaista Masarat
George Z. Kyzas
Publikationsdatum
29.04.2024
Verlag
Springer US
Erschienen in
Adsorption
Print ISSN: 0929-5607
Elektronische ISSN: 1572-8757
DOI
https://doi.org/10.1007/s10450-024-00478-3

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