Clean production of carbon nanomaterials to remove arsenic from drinking water

Al-Mamun, Abdullah and Yehya, M. Ahmed and Mohammed, A. R. S. and Alam, Md. Zahangir and Muyibi, Suleyman Aremu and Al-Khatib, Ma'an Fahmi Rashid and Ismail, Ahmad Faris and Idris, Azni (2010) Clean production of carbon nanomaterials to remove arsenic from drinking water. OIDA International Journal of Sustainable Development, 1 (7). pp. 45-52. ISSN 1923-6654(P), 1923-6662(O)

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Abstract

Novel carbon nanomaterials (CNM) were synthesized through a chemical vapour deposition (CVD) process to adsorb arsenic (As) from water. Iron (Fe) and Nickel (Ni) catalysts were used to produce two different types of CNM, namely carbon nanotubes (CNT) and carbon nanofibres (CNF). Powdered activated carbon (PAC) was used as a substrate, which played the key role for a less hazardous and clean production of CNM. Various concentrations of As (0.5, 5.0 and 10.0 mg/L) were used to prepare synthetically polluted drinking water, which was used for batch mode adsorption experiments in shake flasks. Adsorption capacities for CNF at respective concentrations were 1.46, 13.78, 27.97 mg/g and 1.86, 18.44 and 19.68 mg/g for CNT. Results showed that the CNT was suitable for low concentration of arsenic while CNF was good for high concentration. Two isotherms were studied for arsenic removal. It was observed that the CNT fitted better for Langmuir model with the correlation coefficient of 0.967, while Freundlich worked better for the CNF exhibiting correlation coefficient of 0.999

Item Type:	Article (Journal)
Additional Information:	5174/6404
Uncontrolled Keywords:	Adsorption, CNM, Health Hazard, Toxic Metals
Subjects:	T Technology > TD Environmental technology. Sanitary engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Biotechnology Engineering Kulliyyah of Engineering > Department of Mechanical Engineering
Depositing User:	Dr Abdullah Al Mamun
Date Deposited:	25 Nov 2011 10:38
Last Modified:	02 May 2024 16:35
URI:	http://irep.iium.edu.my/id/eprint/6404

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