Kinetics of cadmium adsorption by CNTs grown on PACs

Isotherms and kinetic models are useful tool for the investigation of adsorption process. Carbon nanotubes (CNTs) grown on powdered activated carbons (PACs) was used as novel adsorbent. Two isotherms and three kinetic models were studied for the removal of cadmium from water. The isotherms were Lang...

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Main Authors:	Mamun, Abdullah Al, AlSaadi, Mohammed AbdulHakim, Muyibi, Suleyman Aremu, Alam, Md Zahangir, Iis, Sopyan
Format:	Article
Language:	English English
Published:	Universiti Malaysia Perlis 2014
Subjects:	TA170 Environmental engineering
Online Access:	http://irep.iium.edu.my/57012/ http://irep.iium.edu.my/57012/ http://irep.iium.edu.my/57012/13/Kinetics%20of%20cadmium%20adsorption%20by%20CNTs%20grown%20on%20PACs.pdf http://irep.iium.edu.my/57012/7/Scopus%20-%20Document%20details.pdf

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spelling	iium-570122018-01-22T03:24:37Z http://irep.iium.edu.my/57012/ Kinetics of cadmium adsorption by CNTs grown on PACs Mamun, Abdullah Al AlSaadi, Mohammed AbdulHakim Muyibi, Suleyman Aremu Alam, Md Zahangir Iis, Sopyan TA170 Environmental engineering Isotherms and kinetic models are useful tool for the investigation of adsorption process. Carbon nanotubes (CNTs) grown on powdered activated carbons (PACs) was used as novel adsorbent. Two isotherms and three kinetic models were studied for the removal of cadmium from water. The isotherms were Langmuir and Freundlich and the kinetic models were pseudo first order, pseudo second order and intraparticle diffusion models. Langmuir constants were qm = 69.759 mg/g, Kl = 0.223 and R2 = 0.924. The adsorption process was found more likely to follow Freundlich model with R2 value of 0.961, Kf of 9.215 and n of 3.015. Based on the kinetics study, the pseudo second order was the best fit with R2 of 0.996 and model constants were qe = 34.29 (mg/g) and K2 = 0.0013 (g/mg.min). Coefficients for the pseudo first order were qe= 21.145 (mg/g) and K1= 0.09 (min-1) with R2 of 0.936. The intraparticle kinetic model exhibited R2 value of 0.812 with Kd = 1.295 (g/mg.min0.5). CNTs after oxidative functionalization with KMnO4 were observed to be an efficient adsorbent for Cd2+ removal from water. Universiti Malaysia Perlis 2014 Article PeerReviewed application/pdf en http://irep.iium.edu.my/57012/13/Kinetics%20of%20cadmium%20adsorption%20by%20CNTs%20grown%20on%20PACs.pdf application/pdf en http://irep.iium.edu.my/57012/7/Scopus%20-%20Document%20details.pdf Mamun, Abdullah Al and AlSaadi, Mohammed AbdulHakim and Muyibi, Suleyman Aremu and Alam, Md Zahangir and Iis, Sopyan (2014) Kinetics of cadmium adsorption by CNTs grown on PACs. International Journal of Nanoelectronics and Materials, 7 (1). pp. 25-33. ISSN 2232-1535 http://ijneam.unimap.edu.my/images/PDF/Vol_7_1/IJNEAM%207_No%201_5_25-33.pdf
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English English
topic	TA170 Environmental engineering
spellingShingle	TA170 Environmental engineering Mamun, Abdullah Al AlSaadi, Mohammed AbdulHakim Muyibi, Suleyman Aremu Alam, Md Zahangir Iis, Sopyan Kinetics of cadmium adsorption by CNTs grown on PACs
description	Isotherms and kinetic models are useful tool for the investigation of adsorption process. Carbon nanotubes (CNTs) grown on powdered activated carbons (PACs) was used as novel adsorbent. Two isotherms and three kinetic models were studied for the removal of cadmium from water. The isotherms were Langmuir and Freundlich and the kinetic models were pseudo first order, pseudo second order and intraparticle diffusion models. Langmuir constants were qm = 69.759 mg/g, Kl = 0.223 and R2 = 0.924. The adsorption process was found more likely to follow Freundlich model with R2 value of 0.961, Kf of 9.215 and n of 3.015. Based on the kinetics study, the pseudo second order was the best fit with R2 of 0.996 and model constants were qe = 34.29 (mg/g) and K2 = 0.0013 (g/mg.min). Coefficients for the pseudo first order were qe= 21.145 (mg/g) and K1= 0.09 (min-1) with R2 of 0.936. The intraparticle kinetic model exhibited R2 value of 0.812 with Kd = 1.295 (g/mg.min0.5). CNTs after oxidative functionalization with KMnO4 were observed to be an efficient adsorbent for Cd2+ removal from water.
format	Article
author	Mamun, Abdullah Al AlSaadi, Mohammed AbdulHakim Muyibi, Suleyman Aremu Alam, Md Zahangir Iis, Sopyan
author_facet	Mamun, Abdullah Al AlSaadi, Mohammed AbdulHakim Muyibi, Suleyman Aremu Alam, Md Zahangir Iis, Sopyan
author_sort	Mamun, Abdullah Al
title	Kinetics of cadmium adsorption by CNTs grown on PACs
title_short	Kinetics of cadmium adsorption by CNTs grown on PACs
title_full	Kinetics of cadmium adsorption by CNTs grown on PACs
title_fullStr	Kinetics of cadmium adsorption by CNTs grown on PACs
title_full_unstemmed	Kinetics of cadmium adsorption by CNTs grown on PACs
title_sort	kinetics of cadmium adsorption by cnts grown on pacs
publisher	Universiti Malaysia Perlis
publishDate	2014
url	http://irep.iium.edu.my/57012/ http://irep.iium.edu.my/57012/ http://irep.iium.edu.my/57012/13/Kinetics%20of%20cadmium%20adsorption%20by%20CNTs%20grown%20on%20PACs.pdf http://irep.iium.edu.my/57012/7/Scopus%20-%20Document%20details.pdf
first_indexed	2023-09-18T21:20:32Z
last_indexed	2023-09-18T21:20:32Z
_version_	1777411851205738496

Kinetics of cadmium adsorption by CNTs grown on PACs

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