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Kinetics of cadmium adsorption by CNTs grown on PACs

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Main Authors: Abdullah, Al Mamun, Mohammed A., Al-Saadi, Suleyman A., A. Muyibi, Md. Zahangir, Alam, Iis, Sopyan
Other Authors: mamun@iium.edu.my
Format: Article
Language:English
Published: Universiti Malaysia Perlis 2016
Subjects:
Adsorption
PACs
Cadmium CNTs
Kinetics
Online Access:http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41329
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spelling my.unimap-413292017-11-21T02:07:23Z Kinetics of cadmium adsorption by CNTs grown on PACs Abdullah, Al Mamun Mohammed A., Al-Saadi Suleyman A., A. Muyibi Md. Zahangir, Alam Iis, Sopyan mamun@iium.edu.my Adsorption PACs Cadmium CNTs Kinetics Link to publisher's homepage at http://ijneam.unimap.edu.my/ Isotherms and kinetics 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, K1 = 0.223 and R2 = 0.924. The adsorption process was found more likely to follow Freunlich 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 constant 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. 2016-04-22T10:21:40Z 2016-04-22T10:21:40Z 2014 Article International Journal of Nanoelectronics and Materials, vol.7 (1), 2014, pages 25-33 1985-5761 (Printed) 1997-4434 (Online) http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41329 en Universiti Malaysia Perlis
institution Universiti Malaysia Perlis
building UniMAP Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaysia Perlis
content_source UniMAP Library Digital Repository
url_provider http://dspace.unimap.edu.my/
language English
topic Adsorption
PACs
Cadmium CNTs
Kinetics
spellingShingle Adsorption
PACs
Cadmium CNTs
Kinetics
Abdullah, Al Mamun
Mohammed A., Al-Saadi
Suleyman A., A. Muyibi
Md. Zahangir, Alam
Iis, Sopyan
Kinetics of cadmium adsorption by CNTs grown on PACs
description Link to publisher's homepage at http://ijneam.unimap.edu.my/
author2 mamun@iium.edu.my
author_facet mamun@iium.edu.my
Abdullah, Al Mamun
Mohammed A., Al-Saadi
Suleyman A., A. Muyibi
Md. Zahangir, Alam
Iis, Sopyan
format Article
author Abdullah, Al Mamun
Mohammed A., Al-Saadi
Suleyman A., A. Muyibi
Md. Zahangir, Alam
Iis, Sopyan
author_sort Abdullah, Al Mamun
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 2016
url http://dspace.unimap.edu.my:80/xmlui/handle/123456789/41329
_version_ 1643802799081783296
score 13.222552

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