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Equilibrium studies and kinetics mechanism for the removal of basic and reactive dyes in both single and binary systems using EDTA modified rice husk

The potential of using ethylenediamine tetraacetic acid modified rice husk (ERH) to remove different types of dyes, namely basic and reactive dyes were studied. Sorption characteristic of ERH showed that it was pH dependent. The kinetics of sorption for both dyes was rapid within the first 60 min re...

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Main Authors: Ong, Siew Teng, Lee, Weng Nam, Keng, Pei Sin, Lee, Siew Ling, Hung, Yung Tse, Ha, Sie Tiong
Format: Article
Published: Academic Journals 2010
Subjects:
Q Science
Online Access:http://eprints.utm.my/id/eprint/26199/
http://www.academicjournals.org/journal/IJPS/article-abstract/51D981026049
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spelling my.utm.261992018-10-31T12:20:25Z http://eprints.utm.my/id/eprint/26199/ Equilibrium studies and kinetics mechanism for the removal of basic and reactive dyes in both single and binary systems using EDTA modified rice husk Ong, Siew Teng Lee, Weng Nam Keng, Pei Sin Lee, Siew Ling Hung, Yung Tse Ha, Sie Tiong Q Science The potential of using ethylenediamine tetraacetic acid modified rice husk (ERH) to remove different types of dyes, namely basic and reactive dyes were studied. Sorption characteristic of ERH showed that it was pH dependent. The kinetics of sorption for both dyes was rapid within the first 60 min regardless of its initial concentration. Using the pseudo-second order kinetics model, the predicted uptakes of Methylene Blue (MB) and Reactive Orange 16 (RO16) agreed closely with experimental values obtained. Three isotherm models were used to fit with equilibrium data, namely Langmuir, Freundlich and BET models. It was found that the equilibrium fitted well in Freundlich isotherm with higher regression coefficient value, R2. Thermodynamic parameters showed that the sorption of process of MB and RO16 are exothermic and endothermic, respectively. Decrease in sorbent particle size led to an increase in the sorption of dyes. The study revealed that ERH is suitable to use as a single sorbent to remove both MB and RO16 in all systems. Academic Journals 2010-05-31 Article PeerReviewed Ong, Siew Teng and Lee, Weng Nam and Keng, Pei Sin and Lee, Siew Ling and Hung, Yung Tse and Ha, Sie Tiong (2010) Equilibrium studies and kinetics mechanism for the removal of basic and reactive dyes in both single and binary systems using EDTA modified rice husk. INTERNATIONAL JOURNAL OF THE PHYSICAL SCIENCES, 5 (5). 582 - 595. ISSN 1992-1950 http://www.academicjournals.org/journal/IJPS/article-abstract/51D981026049
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/
topic Q Science
spellingShingle Q Science
Ong, Siew Teng
Lee, Weng Nam
Keng, Pei Sin
Lee, Siew Ling
Hung, Yung Tse
Ha, Sie Tiong
Equilibrium studies and kinetics mechanism for the removal of basic and reactive dyes in both single and binary systems using EDTA modified rice husk
description The potential of using ethylenediamine tetraacetic acid modified rice husk (ERH) to remove different types of dyes, namely basic and reactive dyes were studied. Sorption characteristic of ERH showed that it was pH dependent. The kinetics of sorption for both dyes was rapid within the first 60 min regardless of its initial concentration. Using the pseudo-second order kinetics model, the predicted uptakes of Methylene Blue (MB) and Reactive Orange 16 (RO16) agreed closely with experimental values obtained. Three isotherm models were used to fit with equilibrium data, namely Langmuir, Freundlich and BET models. It was found that the equilibrium fitted well in Freundlich isotherm with higher regression coefficient value, R2. Thermodynamic parameters showed that the sorption of process of MB and RO16 are exothermic and endothermic, respectively. Decrease in sorbent particle size led to an increase in the sorption of dyes. The study revealed that ERH is suitable to use as a single sorbent to remove both MB and RO16 in all systems.
format Article
author Ong, Siew Teng
Lee, Weng Nam
Keng, Pei Sin
Lee, Siew Ling
Hung, Yung Tse
Ha, Sie Tiong
author_facet Ong, Siew Teng
Lee, Weng Nam
Keng, Pei Sin
Lee, Siew Ling
Hung, Yung Tse
Ha, Sie Tiong
author_sort Ong, Siew Teng
title Equilibrium studies and kinetics mechanism for the removal of basic and reactive dyes in both single and binary systems using EDTA modified rice husk
title_short Equilibrium studies and kinetics mechanism for the removal of basic and reactive dyes in both single and binary systems using EDTA modified rice husk
title_full Equilibrium studies and kinetics mechanism for the removal of basic and reactive dyes in both single and binary systems using EDTA modified rice husk
title_fullStr Equilibrium studies and kinetics mechanism for the removal of basic and reactive dyes in both single and binary systems using EDTA modified rice husk
title_full_unstemmed Equilibrium studies and kinetics mechanism for the removal of basic and reactive dyes in both single and binary systems using EDTA modified rice husk
title_sort equilibrium studies and kinetics mechanism for the removal of basic and reactive dyes in both single and binary systems using edta modified rice husk
publisher Academic Journals
publishDate 2010
url http://eprints.utm.my/id/eprint/26199/
http://www.academicjournals.org/journal/IJPS/article-abstract/51D981026049
_version_ 1643647707483471872
score 13.211869

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