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Removal of reactive green 19 dye using chitosan beads

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Main Author: Liaw, Lee Teng
Other Authors: Masitah Hasan
Format: Learning Object
Language:English
Published: Universiti Malaysia Perlis (UniMAP) 2012
Subjects:
Reactive green 19 (RG19)
Chitosan beads
Shrimp shell
Wastewater pollutions
Textile industry
Online Access:http://dspace.unimap.edu.my/xmlui/handle/123456789/19579
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spelling my.unimap-195792012-06-02T01:59:50Z Removal of reactive green 19 dye using chitosan beads Liaw, Lee Teng Masitah Hasan Reactive green 19 (RG19) Chitosan beads Shrimp shell Wastewater pollutions Textile industry Access is limited to UniMAP community. The adsorption of reactive green 19 (RG19) on chitosan beads was studied in batch system. Various experimental parameters were studied, including initial dye concentration (50 - 500 mg/L), contact time, pH of solution (2 - 13) and temperature (25 - 50 °C). The experimental data were analyzed using Langmuir and Freundlich isotherm model. The result showed a better fit to the Langmuir isotherm model, claiming a homogeneous surface of chitosan beads produced. Pseudo-first-order, pseudo-second-order kinetic were used to analyze the kinetic data. It was found that the kinetic data fitted well with the pseudo-second-order kinetic model, which suggest that the adsorption is controlled by the chemisorptions process. Thermodynamic studies were carried out and various thermodynamic parameters, such as Gibbs energy (ΔG°), entalphy change (ΔH°), entrophy change (ΔS°) and activation energy (Ea) were calculated. The results reveal that RG19 has a good affinity towards chitosan beads and the adsorption process was spontaneous and endothermic. Since the low value of Ea and ∆G° indicates that process is more towards physisorption mechanism, it is concluded that the adsorption of RG19 onto chitosan beads are taking the combination route of physical and chemisorptions. 2012-06-02T01:59:50Z 2012-06-02T01:59:50Z 2010-05 Learning Object http://hdl.handle.net/123456789/19579 en Universiti Malaysia Perlis (UniMAP) School of Environmental Engineering
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Reactive green 19 (RG19)
Chitosan beads
Shrimp shell
Wastewater pollutions
Textile industry
spellingShingle Reactive green 19 (RG19)
Chitosan beads
Shrimp shell
Wastewater pollutions
Textile industry
Liaw, Lee Teng
Removal of reactive green 19 dye using chitosan beads
description Access is limited to UniMAP community.
author2 Masitah Hasan
author_facet Masitah Hasan
Liaw, Lee Teng
format Learning Object
author Liaw, Lee Teng
author_sort Liaw, Lee Teng
title Removal of reactive green 19 dye using chitosan beads
title_short Removal of reactive green 19 dye using chitosan beads
title_full Removal of reactive green 19 dye using chitosan beads
title_fullStr Removal of reactive green 19 dye using chitosan beads
title_full_unstemmed Removal of reactive green 19 dye using chitosan beads
title_sort removal of reactive green 19 dye using chitosan beads
publisher Universiti Malaysia Perlis (UniMAP)
publishDate 2012
url http://dspace.unimap.edu.my/xmlui/handle/123456789/19579
_version_ 1643792756211974144
score 13.214268

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