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
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spelling	my-uitm-ir.598702022-05-18T08:17:33Z 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 2020-06 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 https://ir.uitm.edu.my/id/eprint/59870/ https://ir.uitm.edu.my/id/eprint/59870/1/59870.pdf text en public masters Universiti Teknologi MARA Faculty of Applied Sciences Jawad, Ali H. (Dr.)
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
advisor	Jawad, Ali H. (Dr.)
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
qualification_level	Master's degree
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
granting_institution	Universiti Teknologi MARA
granting_department	Faculty of Applied Sciences
publishDate	2020
url	https://ir.uitm.edu.my/id/eprint/59870/1/59870.pdf
_version_	1783735064730796032

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

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