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Fabrication of an immobilized cross-linked chitosan-glyoxal film as an effective adsorbent for adsorption and desorption of reactive orange 16 and methyl orange dyes / Siti Solehah Ahmad Norrahma

Chitosan was cross-linked with Glyoxal to produce an immobilized film of cross-linked chitosan-glyoxal film (Chi-Gly film) to act as potential adsorbent for Reactive Red 16 (RO16) and Methyl Orange (MO) dyes from aqueous solutions. The physicochemical properties of Chi-Gly film were determined via p...

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Main Author: Ahmad Norrahma, Siti Solehah
Format: Thesis
Language:English
Published: 2020
Subjects:
Textile bleaching, dyeing, printing, etc.
Online Access:https://ir.uitm.edu.my/id/eprint/59870/1/59870.pdf
https://ir.uitm.edu.my/id/eprint/59870/
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spelling my.uitm.ir.598702022-05-18T08:17:33Z https://ir.uitm.edu.my/id/eprint/59870/ Fabrication of an immobilized cross-linked chitosan-glyoxal film as an effective adsorbent for adsorption and desorption of reactive orange 16 and methyl orange dyes / Siti Solehah Ahmad Norrahma Ahmad Norrahma, Siti Solehah Textile bleaching, dyeing, printing, etc. Chitosan was cross-linked with Glyoxal to produce an immobilized film of cross-linked chitosan-glyoxal film (Chi-Gly film) to act as potential adsorbent for Reactive Red 16 (RO16) and Methyl Orange (MO) dyes from aqueous solutions. The physicochemical properties of Chi-Gly film were determined via pH-Potentiometric titration, surface area (BET) analysis, elemental analysis, Scanning Electron Microscopy with Energy Dispersive X-Ray (SEM-EDX), X-Ray Diffraction (XRD), Thermogravimetric analysis (TGA), Fourier Transform Infrared Spectroscopy (FT-IR), pH at the point of zero charge (pHpzc), water swelling, and mechanical strength. The characterizations indicated that the Chi-Gly film was thermally stable, extremely low swelling index with high adhesion strength on glass plate, amine group (-NH2) content was 32.52 %, and pHpzc of ∼6.0 indicating a negative surface charge occurs above pHpzc. The maximum adsorption capacities for RO16 and MO on Chi-Gly film were 1554.3 mg/g and 1451.9 mg/g, respectively, at Chi-Gly film thickness of 8.5 μm, pH ~ 3, and temperature 303 K. The Langmuir isotherm model showed better fit to the equilibrium data than the Freundlich and Temkin models. The kinetic uptake results were well described by the Pseudo-First-Order (PFO) kinetic. The mechanism of adsorption included mainly hydrogen bonding interaction, electrostatic attractions, n-π stacking interaction and Yoshida H-bonding. The thermodynamic adsorption functions (ΔG°, ΔH° and ΔS°) showed that the adsorption of RO16 and MO on Chi-Gly film was spontaneous and exothermic in nature under examined conditions. This study revealed that immobilized Chi-Gly film as a potential and reusable adsorbent for at least three cycles of adsorptions without losing much its adsorptive activity and no filtration process was required for adsorbent recovery. 2020-06 Thesis NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/59870/1/59870.pdf (2020) Fabrication of an immobilized cross-linked chitosan-glyoxal film as an effective adsorbent for adsorption and desorption of reactive orange 16 and methyl orange dyes / Siti Solehah Ahmad Norrahma. Masters thesis, thesis, Universiti Teknologi MARA.
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
language English
topic Textile bleaching, dyeing, printing, etc.
spellingShingle Textile bleaching, dyeing, printing, etc.
Ahmad Norrahma, Siti Solehah
Fabrication of an immobilized cross-linked chitosan-glyoxal film as an effective adsorbent for adsorption and desorption of reactive orange 16 and methyl orange dyes / Siti Solehah Ahmad Norrahma
description Chitosan was cross-linked with Glyoxal to produce an immobilized film of cross-linked chitosan-glyoxal film (Chi-Gly film) to act as potential adsorbent for Reactive Red 16 (RO16) and Methyl Orange (MO) dyes from aqueous solutions. The physicochemical properties of Chi-Gly film were determined via pH-Potentiometric titration, surface area (BET) analysis, elemental analysis, Scanning Electron Microscopy with Energy Dispersive X-Ray (SEM-EDX), X-Ray Diffraction (XRD), Thermogravimetric analysis (TGA), Fourier Transform Infrared Spectroscopy (FT-IR), pH at the point of zero charge (pHpzc), water swelling, and mechanical strength. The characterizations indicated that the Chi-Gly film was thermally stable, extremely low swelling index with high adhesion strength on glass plate, amine group (-NH2) content was 32.52 %, and pHpzc of ∼6.0 indicating a negative surface charge occurs above pHpzc. The maximum adsorption capacities for RO16 and MO on Chi-Gly film were 1554.3 mg/g and 1451.9 mg/g, respectively, at Chi-Gly film thickness of 8.5 μm, pH ~ 3, and temperature 303 K. The Langmuir isotherm model showed better fit to the equilibrium data than the Freundlich and Temkin models. The kinetic uptake results were well described by the Pseudo-First-Order (PFO) kinetic. The mechanism of adsorption included mainly hydrogen bonding interaction, electrostatic attractions, n-π stacking interaction and Yoshida H-bonding. The thermodynamic adsorption functions (ΔG°, ΔH° and ΔS°) showed that the adsorption of RO16 and MO on Chi-Gly film was spontaneous and exothermic in nature under examined conditions. This study revealed that immobilized Chi-Gly film as a potential and reusable adsorbent for at least three cycles of adsorptions without losing much its adsorptive activity and no filtration process was required for adsorbent recovery.
format Thesis
author Ahmad Norrahma, Siti Solehah
author_facet Ahmad Norrahma, Siti Solehah
author_sort Ahmad Norrahma, Siti Solehah
title Fabrication of an immobilized cross-linked chitosan-glyoxal film as an effective adsorbent for adsorption and desorption of reactive orange 16 and methyl orange dyes / Siti Solehah Ahmad Norrahma
title_short Fabrication of an immobilized cross-linked chitosan-glyoxal film as an effective adsorbent for adsorption and desorption of reactive orange 16 and methyl orange dyes / Siti Solehah Ahmad Norrahma
title_full Fabrication of an immobilized cross-linked chitosan-glyoxal film as an effective adsorbent for adsorption and desorption of reactive orange 16 and methyl orange dyes / Siti Solehah Ahmad Norrahma
title_fullStr Fabrication of an immobilized cross-linked chitosan-glyoxal film as an effective adsorbent for adsorption and desorption of reactive orange 16 and methyl orange dyes / Siti Solehah Ahmad Norrahma
title_full_unstemmed Fabrication of an immobilized cross-linked chitosan-glyoxal film as an effective adsorbent for adsorption and desorption of reactive orange 16 and methyl orange dyes / Siti Solehah Ahmad Norrahma
title_sort fabrication of an immobilized cross-linked chitosan-glyoxal film as an effective adsorbent for adsorption and desorption of reactive orange 16 and methyl orange dyes / siti solehah ahmad norrahma
publishDate 2020
url https://ir.uitm.edu.my/id/eprint/59870/1/59870.pdf
https://ir.uitm.edu.my/id/eprint/59870/
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score 13.211869

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