Adsorption of methylene blue onto activated carbon developed from baobab fruit shell by chemical activation: kinetic equilibrium studies

Nedjai, Radhia and Al-Khatib, Ma'an Fahmi Rashid and Alam, Md. Zahangir and Kabbashi, Nassereldeen Ahmed (2021) Adsorption of methylene blue onto activated carbon developed from baobab fruit shell by chemical activation: kinetic equilibrium studies. IIUM Engineering Journal, 22 (2). pp. 31-49. ISSN 1511-788X E-ISSN 2289-7860

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Abstract

This article provides results of the usability of baobab fruit shell to produce activated carbons by chemical activation using ZnCl2, H3PO4, and KOH. This study indicated that activated carbon produced from baobab fruit shell fruit can be used as a promising adsorbent for the removal of methylene blue from aqueous solutions. Significant changes on the material surface following the activation process were observed through SEM and FTIR analyses. Scanning electron micrographs of BFS-ACs showed that porous structures were formed during activation, while the FTIR results indicated that the carbons have abundant functional groups on the surface. KOH activation led an activated carbon with a high methylene blue adsorption of 95.54 % and maximum adsorption capacity of 113.63 mg/g, which is directly related to the specific surface area of activated carbons. The adsorption isotherm data were fitted to Langmuir and Freundlich adsorption models. The Langmuir isotherm model showed better fit to the equilibrium data than the Freundlich model. The adsorption process was well described by the pseudo-second-order kinetics. The BFS-ACs is an effective and low-cost adsorbent for the removal of MB from an aqueous solution.

Item Type:	Article (Journal)
Additional Information:	4286/90707
Uncontrolled Keywords:	activated carbon; Baobab fruit shells; methylene blue adsorption; adsorption isotherms; adsorption kinetics
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:	08 Jul 2021 20:10
Last Modified:	02 May 2024 12:22
URI:	http://irep.iium.edu.my/id/eprint/90707

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