Lead sorption by carbon nanofibers grown on powdered activated carbon — kinetics and equilibrium

Carbon nano¯bers (CNFs) were synthesized by using a safe and less hazardous method, compared to using °oating catalysts in chemical vapor deposition (CVD) process. This process used C2H2 as carbon source and oil palm kernel shell-based powdered activated carbon (PAC) as cheap solid substrate. Use...

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Main Authors:	Al-Mamun, Abdullah, Al-Khatib, Ma An Fahmi Rashid, Jameel, Ahmed Tariq
Format:	Article
Language:	English
Published:	World Scientic Publishing Company 2015
Subjects:	TD169 Environmental protection
Online Access:	http://irep.iium.edu.my/41433/ http://irep.iium.edu.my/41433/ http://irep.iium.edu.my/41433/ http://irep.iium.edu.my/41433/1/Published_Paper_Kinetics.pdf

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recordtype	eprints
spelling	iium-414332016-11-15T07:50:35Z http://irep.iium.edu.my/41433/ Lead sorption by carbon nanofibers grown on powdered activated carbon — kinetics and equilibrium Al-Mamun, Abdullah Al-Khatib, Ma An Fahmi Rashid Jameel, Ahmed Tariq TD169 Environmental protection Carbon nano¯bers (CNFs) were synthesized by using a safe and less hazardous method, compared to using °oating catalysts in chemical vapor deposition (CVD) process. This process used C2H2 as carbon source and oil palm kernel shell-based powdered activated carbon (PAC) as cheap solid substrate. Use of nickel (Ni2þ) impregnated PAC as ¯xed substrate for the synthesis of CNF is one of the novelties of the research work accomplished by the authors. The PAC–CNFs porous nanocomposite product was used for the sorption of lead ions (Pb2þ) from synthetic aqueous solution. Kinetics of Pb2þ adsorption and isotherms were investigated by varying initial concentration of lead and contact time. PAC–CNFs were found to remove Pb2þ better at acidic pH of about 5.5. Langmuir and Freundlich isotherms were applied to the sorption equilibrium data to ¯nd the best ¯tted model. Langmuir isotherm model with R2 ¼ 0:965 ¯tted the adsorption data better than the Freundlich isotherm. The kinetic processes of Pb2þ adsorption on CNFs were investigated by applying di®erent kinetic models, namely zero-order, pseudo-¯rst-order and pseudo-second-order. The pseudo-second-order rate equation exhibited the best results with R2 ¼ 0:999, qe ¼ 74:79 (mg/g) and K2 ¼ 0:029 (min . g=mg). The novel nanocomposite product seemed to have the potential to remove Pb2þ ions from aqueous solution. World Scientic Publishing Company 2015-02 Article PeerReviewed application/pdf en http://irep.iium.edu.my/41433/1/Published_Paper_Kinetics.pdf Al-Mamun, Abdullah and Al-Khatib, Ma An Fahmi Rashid and Jameel, Ahmed Tariq (2015) Lead sorption by carbon nanofibers grown on powdered activated carbon — kinetics and equilibrium. NANO: Brief Reports and Reviews, 10 (2). pp. 1550017-1. ISSN 1793-2920 http://www.worldscientific.com/worldscinet/nano 10.1142/S1793292015500174
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TD169 Environmental protection
spellingShingle	TD169 Environmental protection Al-Mamun, Abdullah Al-Khatib, Ma An Fahmi Rashid Jameel, Ahmed Tariq Lead sorption by carbon nanofibers grown on powdered activated carbon — kinetics and equilibrium
description	Carbon nano¯bers (CNFs) were synthesized by using a safe and less hazardous method, compared to using °oating catalysts in chemical vapor deposition (CVD) process. This process used C2H2 as carbon source and oil palm kernel shell-based powdered activated carbon (PAC) as cheap solid substrate. Use of nickel (Ni2þ) impregnated PAC as ¯xed substrate for the synthesis of CNF is one of the novelties of the research work accomplished by the authors. The PAC–CNFs porous nanocomposite product was used for the sorption of lead ions (Pb2þ) from synthetic aqueous solution. Kinetics of Pb2þ adsorption and isotherms were investigated by varying initial concentration of lead and contact time. PAC–CNFs were found to remove Pb2þ better at acidic pH of about 5.5. Langmuir and Freundlich isotherms were applied to the sorption equilibrium data to ¯nd the best ¯tted model. Langmuir isotherm model with R2 ¼ 0:965 ¯tted the adsorption data better than the Freundlich isotherm. The kinetic processes of Pb2þ adsorption on CNFs were investigated by applying di®erent kinetic models, namely zero-order, pseudo-¯rst-order and pseudo-second-order. The pseudo-second-order rate equation exhibited the best results with R2 ¼ 0:999, qe ¼ 74:79 (mg/g) and K2 ¼ 0:029 (min . g=mg). The novel nanocomposite product seemed to have the potential to remove Pb2þ ions from aqueous solution.
format	Article
author	Al-Mamun, Abdullah Al-Khatib, Ma An Fahmi Rashid Jameel, Ahmed Tariq
author_facet	Al-Mamun, Abdullah Al-Khatib, Ma An Fahmi Rashid Jameel, Ahmed Tariq
author_sort	Al-Mamun, Abdullah
title	Lead sorption by carbon nanofibers grown on powdered activated carbon — kinetics and equilibrium
title_short	Lead sorption by carbon nanofibers grown on powdered activated carbon — kinetics and equilibrium
title_full	Lead sorption by carbon nanofibers grown on powdered activated carbon — kinetics and equilibrium
title_fullStr	Lead sorption by carbon nanofibers grown on powdered activated carbon — kinetics and equilibrium
title_full_unstemmed	Lead sorption by carbon nanofibers grown on powdered activated carbon — kinetics and equilibrium
title_sort	lead sorption by carbon nanofibers grown on powdered activated carbon — kinetics and equilibrium
publisher	World Scientic Publishing Company
publishDate	2015
url	http://irep.iium.edu.my/41433/ http://irep.iium.edu.my/41433/ http://irep.iium.edu.my/41433/ http://irep.iium.edu.my/41433/1/Published_Paper_Kinetics.pdf
first_indexed	2023-09-18T20:59:21Z
last_indexed	2023-09-18T20:59:21Z
_version_	1777410518709960704

Lead sorption by carbon nanofibers grown on powdered activated carbon — kinetics and equilibrium

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