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Malachite green adsorption by potassium salts-activated carbons derived from textile sludge: Equilibrium, kinetics and thermodynamics studies

This work is aimed at evaluating the adsorption of malachite green (MG) on potassium salts-activated carbons derived from textile sludge. Potassium hydroxide (KOH), potassium iodide (KI), and the potassium salts (KOH + KI) composite were used in chemical activation. The physicochemical properties of...

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Main Authors: Tang, S. H., Zaini, M. A. A.
Format: Article
Published: John Wiley and Sons Ltd 2017
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TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/75418/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007332640&doi=10.1002%2fapj.2063&partnerID=40&md5=38ee3e605509f9937ae9cd25f9e77513
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spelling my.utm.754182018-03-22T11:08:18Z http://eprints.utm.my/id/eprint/75418/ Malachite green adsorption by potassium salts-activated carbons derived from textile sludge: Equilibrium, kinetics and thermodynamics studies Tang, S. H. Zaini, M. A. A. TP Chemical technology This work is aimed at evaluating the adsorption of malachite green (MG) on potassium salts-activated carbons derived from textile sludge. Potassium hydroxide (KOH), potassium iodide (KI), and the potassium salts (KOH + KI) composite were used in chemical activation. The physicochemical properties of the activated carbons were characterized according to textural and surface chemistry. The specific surface area of activated carbon is in the range of 66 to 584 m2/g. The KOH and KI + KOH composite series exhibit a higher surface area. The maximum MG adsorption are between 167 and 113 mg/g. Langmuir model shows the best conformity to the equilibrium data, while the kinetics data were best fitted to the pseudo-second-order model, suggesting the chemisorption process. The intraparticle diffusion maybe involved, but it is not the sole rate-limiting step, while the film diffusion could be the controlling mechanism. Thermodynamics data revealed that the MG adsorption is spontaneous and endothermic. John Wiley and Sons Ltd 2017 Article PeerReviewed Tang, S. H. and Zaini, M. A. A. (2017) Malachite green adsorption by potassium salts-activated carbons derived from textile sludge: Equilibrium, kinetics and thermodynamics studies. Asia-Pacific Journal of Chemical Engineering, 12 (1). pp. 159-172. ISSN 1932-2135 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007332640&doi=10.1002%2fapj.2063&partnerID=40&md5=38ee3e605509f9937ae9cd25f9e77513
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 TP Chemical technology
spellingShingle TP Chemical technology
Tang, S. H.
Zaini, M. A. A.
Malachite green adsorption by potassium salts-activated carbons derived from textile sludge: Equilibrium, kinetics and thermodynamics studies
description This work is aimed at evaluating the adsorption of malachite green (MG) on potassium salts-activated carbons derived from textile sludge. Potassium hydroxide (KOH), potassium iodide (KI), and the potassium salts (KOH + KI) composite were used in chemical activation. The physicochemical properties of the activated carbons were characterized according to textural and surface chemistry. The specific surface area of activated carbon is in the range of 66 to 584 m2/g. The KOH and KI + KOH composite series exhibit a higher surface area. The maximum MG adsorption are between 167 and 113 mg/g. Langmuir model shows the best conformity to the equilibrium data, while the kinetics data were best fitted to the pseudo-second-order model, suggesting the chemisorption process. The intraparticle diffusion maybe involved, but it is not the sole rate-limiting step, while the film diffusion could be the controlling mechanism. Thermodynamics data revealed that the MG adsorption is spontaneous and endothermic.
format Article
author Tang, S. H.
Zaini, M. A. A.
author_facet Tang, S. H.
Zaini, M. A. A.
author_sort Tang, S. H.
title Malachite green adsorption by potassium salts-activated carbons derived from textile sludge: Equilibrium, kinetics and thermodynamics studies
title_short Malachite green adsorption by potassium salts-activated carbons derived from textile sludge: Equilibrium, kinetics and thermodynamics studies
title_full Malachite green adsorption by potassium salts-activated carbons derived from textile sludge: Equilibrium, kinetics and thermodynamics studies
title_fullStr Malachite green adsorption by potassium salts-activated carbons derived from textile sludge: Equilibrium, kinetics and thermodynamics studies
title_full_unstemmed Malachite green adsorption by potassium salts-activated carbons derived from textile sludge: Equilibrium, kinetics and thermodynamics studies
title_sort malachite green adsorption by potassium salts-activated carbons derived from textile sludge: equilibrium, kinetics and thermodynamics studies
publisher John Wiley and Sons Ltd
publishDate 2017
url http://eprints.utm.my/id/eprint/75418/
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85007332640&doi=10.1002%2fapj.2063&partnerID=40&md5=38ee3e605509f9937ae9cd25f9e77513
_version_ 1643657058481864704
score 13.211869

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