The effect of acid modification on adsorption of ortho-nitrophenol from aqueous solution by multi wall carbon nanotubes and conical carbon nanofibers: characterization, modelling and performance

Asmaly, Hamza A. and Kabbashi, Nassereldeen Ahmed and Al-Khatib, Ma'an Fahmi Rashid and Alam, Md. Zahangir and Sulaman, Adam (2023) The effect of acid modification on adsorption of ortho-nitrophenol from aqueous solution by multi wall carbon nanotubes and conical carbon nanofibers: characterization, modelling and performance. Biological and Natural Resources Engineering Journal, 7 (1). pp. 58-90. E-ISSN 2637-0719

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Abstract

This study examined the absorption of ortho-nitrophenol onto Conical carbon nanofibers (CCNFs) and multi-wall carbon nanotubes (MCNTs). The properties of the CNTs and CNFs were analyzed using various techniques such as X-ray diffraction, scanning electron microscopy, Fourier-transform infrared spectroscopy, Brunauer-Emmett-Teller for surface area analysis, Energy dispersive X-ray spectroscopy and transmission electron microscopy. The study investigated the effectiveness of hydrochloric acid-activated the surface of both CNTs and CNFs in removing 2-NitroPhenol ions from an aqueous solution. The Central-Composite design of RSM was employed to study the impact of solution pH, agitation speed, adsorption time, and adsorbent dosage on the adsorption process and then optimize these parameters for the removal of 2NP. The results of the optimization revealed that the best conditions for removing 2-Nitro Phenol were pH 6.6, for 68.0 minutes, at 80 rpm agitation and 108mg of adsorbent. Additionally, the effect of the initial concentration was evaluated, and the adsorption capacity of the nano-activated carbon adsorbents was calculated. The study found that multi-wall carbon nanotubes (MWCNTs) with a high surface area are more effective than Conical carbon nanofibers (CCNFs) in reducing 2-NP from an aqueous solution, making MWCNTs a potentially useful material in the fight against environmental pollution.

Item Type:	Article (Journal)
Uncontrolled Keywords:	2-Nitrophenol, Conical Carbon nanofibers, Multiwall Carbon nanotubes, Adsorption
Subjects:	T Technology > TP Chemical technology > TP155 Chemical engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Biotechnology Engineering
Depositing User:	Dr Nassereldeen Kabbashi
Date Deposited:	07 Jun 2023 09:24
Last Modified:	02 May 2024 12:13
URI:	http://irep.iium.edu.my/id/eprint/104962

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