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Adsorption of basic dye on high-surface-area activated carbon prepared from coconut husk: Equilibrium, kinetic and thermodynamic studies

Adsorption isotherm and kinetics of methylene blue on activated carbon prepared from coconut husk were determined from batch tests. The effects of contact time (1–30 h), initial dye concentration (50–500 mg/l) and solution temperature (30–50 °C) were investigated. Equilibrium data were fitted to Lan...

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Main Authors:	Tan, Ivy A. W., Abdul Latif, Ahmad, Hameed, Bassim Hamid
Format:	Article
Language:	English
Published:	Elsevier Ltd. 2008
Subjects:	Q Science (General) QD Chemistry T Technology (General)
Online Access:	http://ir.unimas.my/id/eprint/21561/1/Abdul.pdf http://ir.unimas.my/id/eprint/21561/ https://www.sciencedirect.com/science/article/pii/S0304389407014707#!
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id	my.unimas.ir.21561
record_format	eprints
spelling	my.unimas.ir.215612023-06-19T08:02:57Z http://ir.unimas.my/id/eprint/21561/ Adsorption of basic dye on high-surface-area activated carbon prepared from coconut husk: Equilibrium, kinetic and thermodynamic studies Tan, Ivy A. W. Abdul Latif, Ahmad Hameed, Bassim Hamid Q Science (General) QD Chemistry T Technology (General) Adsorption isotherm and kinetics of methylene blue on activated carbon prepared from coconut husk were determined from batch tests. The effects of contact time (1–30 h), initial dye concentration (50–500 mg/l) and solution temperature (30–50 °C) were investigated. Equilibrium data were fitted to Langmuir, Freundlich, Temkin and Dubinin–Radushkevich isotherm models. The equilibrium data were best represented by Langmuir isotherm model, showing maximum monolayer adsorption capacity of 434.78 mg/g. The kinetic data were fitted to pseudo-first-order, pseudo-second-order and intraparticle diffusion models, and was found to follow closely the pseudo-second-order kinetic model. Thermodynamic parameters such as standard enthalpy (ΔH°), standard entropy (ΔS°) and standard free energy (ΔG°) were evaluated. The adsorption interaction was found to be exothermic in nature. Coconut husk-based activated carbon was shown to be a promising adsorbent for removal of methylene blue from aqueous solutions. Elsevier Ltd. 2008 Article PeerReviewed text en http://ir.unimas.my/id/eprint/21561/1/Abdul.pdf Tan, Ivy A. W. and Abdul Latif, Ahmad and Hameed, Bassim Hamid (2008) Adsorption of basic dye on high-surface-area activated carbon prepared from coconut husk: Equilibrium, kinetic and thermodynamic studies. Journal of Hazardous Materials, 154 (1-3). pp. 337-346. ISSN 0304-3894 https://www.sciencedirect.com/science/article/pii/S0304389407014707#! DOI:org/10.1016/j.jhazmat.2007.10.031
institution	Universiti Malaysia Sarawak
building	Centre for Academic Information Services (CAIS)
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Malaysia Sarawak
content_source	UNIMAS Institutional Repository
url_provider	http://ir.unimas.my/
language	English
topic	Q Science (General) QD Chemistry T Technology (General)
spellingShingle	Q Science (General) QD Chemistry T Technology (General) Tan, Ivy A. W. Abdul Latif, Ahmad Hameed, Bassim Hamid Adsorption of basic dye on high-surface-area activated carbon prepared from coconut husk: Equilibrium, kinetic and thermodynamic studies
description	Adsorption isotherm and kinetics of methylene blue on activated carbon prepared from coconut husk were determined from batch tests. The effects of contact time (1–30 h), initial dye concentration (50–500 mg/l) and solution temperature (30–50 °C) were investigated. Equilibrium data were fitted to Langmuir, Freundlich, Temkin and Dubinin–Radushkevich isotherm models. The equilibrium data were best represented by Langmuir isotherm model, showing maximum monolayer adsorption capacity of 434.78 mg/g. The kinetic data were fitted to pseudo-first-order, pseudo-second-order and intraparticle diffusion models, and was found to follow closely the pseudo-second-order kinetic model. Thermodynamic parameters such as standard enthalpy (ΔH°), standard entropy (ΔS°) and standard free energy (ΔG°) were evaluated. The adsorption interaction was found to be exothermic in nature. Coconut husk-based activated carbon was shown to be a promising adsorbent for removal of methylene blue from aqueous solutions.
format	Article
author	Tan, Ivy A. W. Abdul Latif, Ahmad Hameed, Bassim Hamid
author_facet	Tan, Ivy A. W. Abdul Latif, Ahmad Hameed, Bassim Hamid
author_sort	Tan, Ivy A. W.
title	Adsorption of basic dye on high-surface-area activated carbon prepared from coconut husk: Equilibrium, kinetic and thermodynamic studies
title_short	Adsorption of basic dye on high-surface-area activated carbon prepared from coconut husk: Equilibrium, kinetic and thermodynamic studies
title_full	Adsorption of basic dye on high-surface-area activated carbon prepared from coconut husk: Equilibrium, kinetic and thermodynamic studies
title_fullStr	Adsorption of basic dye on high-surface-area activated carbon prepared from coconut husk: Equilibrium, kinetic and thermodynamic studies
title_full_unstemmed	Adsorption of basic dye on high-surface-area activated carbon prepared from coconut husk: Equilibrium, kinetic and thermodynamic studies
title_sort	adsorption of basic dye on high-surface-area activated carbon prepared from coconut husk: equilibrium, kinetic and thermodynamic studies
publisher	Elsevier Ltd.
publishDate	2008
url	http://ir.unimas.my/id/eprint/21561/1/Abdul.pdf http://ir.unimas.my/id/eprint/21561/ https://www.sciencedirect.com/science/article/pii/S0304389407014707#!
_version_	1769847631929933824
score	13.211869

Adsorption of basic dye on high-surface-area activated carbon prepared from coconut husk: Equilibrium, kinetic and thermodynamic studies

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