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Removal of reactive black 5 dye using modified chitosan-pandan adsorbent

There has been increased interest of chitosan as a dye adsorbent. Nonetheless, the chitosan tend to form bonding between their monomer chains that result in a rigid structure which affects its capability for dye adsorption. This is why there are many recent studies on modified chitosan through vario...

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Main Author: Razmi, Fatin Amirah
Format: Thesis
Language:English
Published: 2018
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TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/80976/1/FatinAmirahRazmiMFChE2018.pdf
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spelling my.utm.809762019-07-24T00:13:39Z http://eprints.utm.my/id/eprint/80976/ Removal of reactive black 5 dye using modified chitosan-pandan adsorbent Razmi, Fatin Amirah TP Chemical technology There has been increased interest of chitosan as a dye adsorbent. Nonetheless, the chitosan tend to form bonding between their monomer chains that result in a rigid structure which affects its capability for dye adsorption. This is why there are many recent studies on modified chitosan through various modification in order to overcome the limitation. But, most modifications involve chemical additive agents as well as complex procedures that are conducted under strong conditions. Not much research consider low-cost organic materials as modifying agents. The purpose of this work is to investigate the performance of chitosan modified with pandan leaves in the adsorption of reactive black 5 (RB5). Modified chitosan-pandan (MCP) were synthesised by simple wet impregnation using polyphenols from extracted pandan oil under mild condition. MCP was characterised using the scanning electron microscopy, Fourier transform infrared spectroscopy and Brunauer-Emmett-Teller surface area analysis. A batch adsorption was conducted to study the effect of retention time (0-40 min), initial dye concentration (100-1000 mg/L), pH (3-11), temperature (25-80 °C) and dosage of adsorbent (0.01-1.0 g), and to determine the optimum process conditions. Kinetics, isotherm and thermodynamics evaluation were also performed on the adsorption data. The results of MCP adsorption showed outstanding dye removal, with almost 100% under the optimum conditions (30 min, 200 mg/L of RB5, pH 7 and 0.1 g of MCP). The adsorption data fitted well to the pseudo-second order model, indicating the role of chemisorption with the influence of intraparticle diffusion. For isotherm study, the data are best fitted to the Langmuir model (R2 = 0.95) with the maximum adsorption of 115.58 mg/g. A thermodynamics analysis showed that the adsorption was endothermic, occurred spontaneously and feasible. MCP is capable to be regenerated up to 5 times with percentage removal above 50% by only washing with distilled water. In conclusion, a satisfactory performance of MCP in RB5 removal was successfully demonstrated, can be used as a new promising adsorbent for the removal of dyes from textile wastewater. 2018-07 Thesis NonPeerReviewed application/pdf en http://eprints.utm.my/id/eprint/80976/1/FatinAmirahRazmiMFChE2018.pdf Razmi, Fatin Amirah (2018) Removal of reactive black 5 dye using modified chitosan-pandan adsorbent. Masters thesis, Universiti Teknologi Malaysia, Faculty of Chemical and Energy Engineering. http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:119459
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
language English
topic TP Chemical technology
spellingShingle TP Chemical technology
Razmi, Fatin Amirah
Removal of reactive black 5 dye using modified chitosan-pandan adsorbent
description There has been increased interest of chitosan as a dye adsorbent. Nonetheless, the chitosan tend to form bonding between their monomer chains that result in a rigid structure which affects its capability for dye adsorption. This is why there are many recent studies on modified chitosan through various modification in order to overcome the limitation. But, most modifications involve chemical additive agents as well as complex procedures that are conducted under strong conditions. Not much research consider low-cost organic materials as modifying agents. The purpose of this work is to investigate the performance of chitosan modified with pandan leaves in the adsorption of reactive black 5 (RB5). Modified chitosan-pandan (MCP) were synthesised by simple wet impregnation using polyphenols from extracted pandan oil under mild condition. MCP was characterised using the scanning electron microscopy, Fourier transform infrared spectroscopy and Brunauer-Emmett-Teller surface area analysis. A batch adsorption was conducted to study the effect of retention time (0-40 min), initial dye concentration (100-1000 mg/L), pH (3-11), temperature (25-80 °C) and dosage of adsorbent (0.01-1.0 g), and to determine the optimum process conditions. Kinetics, isotherm and thermodynamics evaluation were also performed on the adsorption data. The results of MCP adsorption showed outstanding dye removal, with almost 100% under the optimum conditions (30 min, 200 mg/L of RB5, pH 7 and 0.1 g of MCP). The adsorption data fitted well to the pseudo-second order model, indicating the role of chemisorption with the influence of intraparticle diffusion. For isotherm study, the data are best fitted to the Langmuir model (R2 = 0.95) with the maximum adsorption of 115.58 mg/g. A thermodynamics analysis showed that the adsorption was endothermic, occurred spontaneously and feasible. MCP is capable to be regenerated up to 5 times with percentage removal above 50% by only washing with distilled water. In conclusion, a satisfactory performance of MCP in RB5 removal was successfully demonstrated, can be used as a new promising adsorbent for the removal of dyes from textile wastewater.
format Thesis
author Razmi, Fatin Amirah
author_facet Razmi, Fatin Amirah
author_sort Razmi, Fatin Amirah
title Removal of reactive black 5 dye using modified chitosan-pandan adsorbent
title_short Removal of reactive black 5 dye using modified chitosan-pandan adsorbent
title_full Removal of reactive black 5 dye using modified chitosan-pandan adsorbent
title_fullStr Removal of reactive black 5 dye using modified chitosan-pandan adsorbent
title_full_unstemmed Removal of reactive black 5 dye using modified chitosan-pandan adsorbent
title_sort removal of reactive black 5 dye using modified chitosan-pandan adsorbent
publishDate 2018
url http://eprints.utm.my/id/eprint/80976/1/FatinAmirahRazmiMFChE2018.pdf
http://eprints.utm.my/id/eprint/80976/
http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:119459
_version_ 1643658573023019008
score 13.211869

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