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: Al-Mamun, Abdullah, Al-Saadi, Mohammed A., Muyibi, Suleyman Aremu, Alam, Md. Zahangir, Sopyan, Iis
Format: Conference or Workshop Item
Language:English
English
Published: 2012
Subjects:
Online Access:http://irep.iium.edu.my/25889/
http://irep.iium.edu.my/25889/1/Full_Paper_ICONT-UMP_0014.pdf
http://irep.iium.edu.my/25889/4/25889_Kinetics%20of%20cadmium%20adsorption%20by%20CNTs%20grown%20on%20PACs_SCOPUS.pdf
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spelling iium-258892017-09-06T03:42:11Z http://irep.iium.edu.my/25889/ Kinetics of cadmium adsorption by CNTs grown on PACs Al-Mamun, Abdullah Al-Saadi, Mohammed A. Muyibi, Suleyman Aremu Alam, Md. Zahangir Sopyan, Iis 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. 2012-05-29 Conference or Workshop Item PeerReviewed application/pdf en http://irep.iium.edu.my/25889/1/Full_Paper_ICONT-UMP_0014.pdf application/pdf en http://irep.iium.edu.my/25889/4/25889_Kinetics%20of%20cadmium%20adsorption%20by%20CNTs%20grown%20on%20PACs_SCOPUS.pdf Al-Mamun, Abdullah and Al-Saadi, Mohammed A. and Muyibi, Suleyman Aremu and Alam, Md. Zahangir and Sopyan, Iis (2012) Kinetics of cadmium adsorption by CNTs grown on PACs. In: International Conference on Nanotechnology, ICONT 2012, 29 May – 01 June 2012, Pahang.
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
Al-Mamun, Abdullah
Al-Saadi, Mohammed A.
Muyibi, Suleyman Aremu
Alam, Md. Zahangir
Sopyan, Iis
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 Conference or Workshop Item
author Al-Mamun, Abdullah
Al-Saadi, Mohammed A.
Muyibi, Suleyman Aremu
Alam, Md. Zahangir
Sopyan, Iis
author_facet Al-Mamun, Abdullah
Al-Saadi, Mohammed A.
Muyibi, Suleyman Aremu
Alam, Md. Zahangir
Sopyan, Iis
author_sort Al-Mamun, Abdullah
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
publishDate 2012
url http://irep.iium.edu.my/25889/
http://irep.iium.edu.my/25889/1/Full_Paper_ICONT-UMP_0014.pdf
http://irep.iium.edu.my/25889/4/25889_Kinetics%20of%20cadmium%20adsorption%20by%20CNTs%20grown%20on%20PACs_SCOPUS.pdf
first_indexed 2023-09-18T20:38:35Z
last_indexed 2023-09-18T20:38:35Z
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